Value	Description
`0`	Disable the loop current polarity reversal detection
`1`	Indicate remote answer if the switch reverses polarity
`2`	Indicate remote hang-up if the switch reverses polarity
`3`	Indicate both remote answer and hang-up if the switch reverses polarity twice

(Page 1 of 1 in this chapter)

Chapter 7

Analog Loop Start Protocols

7.1 Introduction

7.2 Signaling Overview

7.3 Parameters

: 7.3.1 Editable parameters

7.4 Special TCP Behavior

: 7.4.1 Release Guard
: 7.4.2 Call Transfer on Loop Start lines
: 7.4.3 Loop Current Reversal Parameters
: 7.4.4 Caller ID Protocol Parameters

7.1 Introduction

This chapter provides the following information: Analog Loop Start signaling overview. Loop Start TCP parameters. Operations that are specific to the Loop Start protocol within the framework of Natural Call Control.
Natural MicroSystems loop start protocols cover both analog and digital interfaces. The analog loop start protocol is implemented by the LPS0 TCP. The analog variations act much as a telephone terminal, connected to a local switch or PBX through a local loop. These variations run on NMS analog line interface boards, AG-8 and AG 2000.

7.2 Signaling Overview

The following tables describe analog loop start signaling. Two tables are necessary, because the protocol changes depending on the side that started the call.
The following table describes the case where the switch presents the call to the terminal equipment. State Outbound switch Line Inbound terminal Idle No loop current Ringing Apply ringing voltage Ringing voltage (Telephone rings) After the first ring, the network can send caller id information on the line. This is accomplished by modem tones. The LPS TCP can detect caller id, following specifications for USA, France and Japan. At this point, the incoming call is presented to the application, that can answer or reject it. If the call is answered, the LPS TCP picks up the phone. Answer - conversation state Loop current "Off-hook" If the inbound side application rejects the call instead, the LPS TCP doesn't pick up the phone, and eventually the calling party will abandon the call. While the call is in conversation state, if connected to a PBX that supports this feature, the call can be transferred to a different extension. Different PBXs support transfering calls in different ways (the usual way is to send a flash, then dial the required extension). A parameterized sequence of actions is executed by the LPS TCP in order to transfer the call. Clear Loop current interruption, or cleardown tone Idle No loop current

The following table illustrates the case where the terminal equipment places the call. State Outbound terminal Line Inbound switch Idle No loop current Seizure "Off-hook" Loop current Seizure acknowledge Dial tone Here the outbound side starts to send the address information. This can be done by means of DTMF tones, or by decadic pulses. If the method is decadic pulses, the loop current is switched on (pulse on) and off (pulse off) repeatedly to signal the digits. Call progress tones Ring tone If the called terminal rejects the call instead, the LPS TCP will detect the busy tone on the line, and abandon the call. Or, if nobody answers, the TCP will abandon the call after a parameterized number of rings. Answer - conversation state Voice (Someone has answered) While the call is in conversation state, if connected to a PBX that supports this feature, the call can be transferred to a different extension. Different PBXs support transfering calls in different ways (the usual way is to send a flash, then dial the required extension). A parameterized sequence of actions is executed by the LPS TCP in order to transfer the call. Clear Loop current interruption, or cleardown tone Idle No loop current

State	Outbound switch	Line	Inbound terminal
Idle		No loop current
Ringing	Apply ringing voltage	Ringing voltage	(Telephone rings)
After the first ring, the network can send caller id information on the line. This is accomplished by modem tones. The LPS TCP can detect caller id, following specifications for USA, France and Japan. At this point, the incoming call is presented to the application, that can answer or reject it. If the call is answered, the LPS TCP picks up the phone.
Answer - conversation state		Loop current	"Off-hook"
If the inbound side application rejects the call instead, the LPS TCP doesn't pick up the phone, and eventually the calling party will abandon the call.
While the call is in conversation state, if connected to a PBX that supports this feature, the call can be transferred to a different extension. Different PBXs support transfering calls in different ways (the usual way is to send a flash, then dial the required extension). A parameterized sequence of actions is executed by the LPS TCP in order to transfer the call.
Clear		Loop current interruption, or cleardown tone
Idle		No loop current

State	Outbound terminal	Line	Inbound switch
Idle		No loop current
Seizure	"Off-hook"	Loop current
Seizure acknowledge		Dial tone
Here the outbound side starts to send the address information. This can be done by means of DTMF tones, or by decadic pulses. If the method is decadic pulses, the loop current is switched on (pulse on) and off (pulse off) repeatedly to signal the digits.
Call progress tones		Ring tone
If the called terminal rejects the call instead, the LPS TCP will detect the busy tone on the line, and abandon the call. Or, if nobody answers, the TCP will abandon the call after a parameterized number of rings.
Answer - conversation state		Voice	(Someone has answered)
While the call is in conversation state, if connected to a PBX that supports this feature, the call can be transferred to a different extension. Different PBXs support transfering calls in different ways (the usual way is to send a flash, then dial the required extension). A parameterized sequence of actions is executed by the LPS TCP in order to transfer the call.
Clear		Loop current interruption, or cleardown tone
Idle		No loop current

7.3 Parameters

Most of the parameters that follow are signaling-specific: changing their value would not only invalidate any approval certificate for the board, but would also most likely cause the board to malfunction. These parameters are described here for reference purposes only.
Other parameters program the interaction the TCP has with the host, or act on features not regulated or that can change from switch to switch within the same network. These are changeable, and indeed, the application developer is often asked to do so. These parameters are in the first table below.

7.3.1 Editable parameters

The following table describes analog loop start parameters (within the parameter category ADI.LPS) that users can modify: Field Name Type/Unit Default Description cleardownflag mask 1 Selects whether to run the cleardown tone detector in conversation state. Value Definition 1 Cleardown enabled 0 Not enabled numrings count 0 Number of rings to detect for an inbound call. If 0, the TCP generates an inbound call event upon beginning of the first ring, otherwise it sends the event at the end of the selected number of rings. Note that if caller ID is enabled (cidsupport = 1) then the inbound call is reported after at least one ring. Value Definition 0 1st ring begin 1 1st ring end # n after n rings nodialtoneaction integer 0 Selects what to do if no dial tone detected. Value Definition 0 Hang up and abandon the call 1 Proceed to dial anyway 2 Generate an inbound call event xfersupport mask 1 Flag to select whether PBX transfer is enabled. Value Definition 0 Transfer commands are disabled 1 Transfer commands are enabled cidsupport mask 0 Flag to enable caller ID detection. Value Definition 0 No caller ID 1 Caller ID detection enabled Your AG configuration file must include the DSP file adsir.m54 when caller ID is enabled. reversalmode integer 0 Selects loop current reversal detection mode. Value Definition 0 Disable detection 1 Reversal indicates remote answer 2 Reversal indicates remote hang up 3 Reversal indicates answer and hang up. xferstring string[6] ! Prefix dial string for call transfer. The string is dialed before dialing the number, where: ! - Flash hook ; - (semicolon) Wait for precise dial tone. * connstring string[6] ! String for transfer back to the Connected state with the first call. It is dialed if a call transfer fails, where: ! - Flash hook. * * A string parameter occupies more than one index in the parameters list. Since the parameter list unit is WORDs (two bytes each), a string of maximum 6 characters will occupy 3 indices.

Field Name	Type/Unit	Default	Description
`cleardownflag`	mask	`1`	Selects whether to run the cleardown tone detector in conversation state. Value Definition 1 Cleardown enabled 0 Not enabled
`numrings`	count	`0`	Number of rings to detect for an inbound call. If 0, the TCP generates an inbound call event upon beginning of the first ring, otherwise it sends the event at the end of the selected number of rings. Note that if caller ID is enabled (`cidsupport` = `1`) then the inbound call is reported after at least one ring. Value Definition 0 1st ring begin 1 1st ring end # n after n rings
`nodialtoneaction`	integer	`0`	Selects what to do if no dial tone detected. Value Definition `0 Hang up and abandon the call` `1 Proceed to dial anyway` `2 Generate an inbound call event`
`xfersupport`	mask	`1`	Flag to select whether PBX transfer is enabled. Value Definition `0 Transfer commands are disabled` `1 Transfer commands are enabled`
`cidsupport`	mask	`0`	Flag to enable caller ID detection. Value Definition `0 No caller ID` `1 Caller ID detection enabled` Your AG configuration file must include the DSP file `adsir.m54 when caller ID is enabled.`
`reversalmode`	integer	`0`	Selects loop current reversal detection mode. Value Definition `0 Disable detection` `1 Reversal indicates remote answer` `2 Reversal indicates remote hang up` `3 Reversal indicates answer and hang up.`
`xferstring`	string[6]	`!`	Prefix dial string for call transfer. The string is dialed before dialing the number, where: `! - Flash hook` `; - (semicolon) Wait for precise dial tone.` `*`
`connstring`	string[6]	`!`	String for transfer back to the Connected state with the first call. It is dialed if a call transfer fails, where: `! - Flash hook.` `*`

Country Regulatory Specifications

Field Name

Type/Unit

Value

Description

`CIDalertmaxtime`

ms

USA: 0
CAN: 0
JPN: 600
GER: *
GBR: *
FRA: 400

Maximum duration of an alert signal in Caller ID protocol (if CID is enabled).
* Not supported for Germany and Britain.

`CIDminmarktime`

ms

USA: 100
CAN: 100
JPN: 50

GER: *

GBR: *
FRA: 50

Minimum duration of the "mark" signal of the caller ID protocol that is interpreted as such.

`CIDtype`

integer

USA: 0
CAN: 0
JPN: 1
GER: *
GBR: *
FRA: 2

Type of Caller ID protocol, if CID is enabled:
Value Definition
`0` BellCore CID Protocol
`1` NTT Japan CID Protocol
`2` ETSI Ringing Pulse Alerting Signal CID
Protocol.
* Not supported for Germany and Britain.

`CIDmaxwaittime`

ms

USA: 8000
CAN: 8000
JPN: 5000
GER: *
GBR: *
FRA: 4000

Maximum time to wait for Caller ID to arrive before concluding the caller has hung up (if CID is enabled).
* Not supported for Germany and Britain.

`dialtonemintime`

ms

USA: 1000
CAN: 1000
JPN: 1000
GER: 3000
GBR: 3000
FRA: 3000

For outgoing calls, the minimum duration of non-precise dial tone required before dialing will begin. Set this to 0 to disable non-precise dial tone detection. (Precise dial tone detection is controlled by `ADI.START` parameters).
To comply with CTR21 standards, do not modify GER, GBR, or FRA parameters.

`dialtonewaittime`

ms

USA: 5000
CAN: 5000
JPN: 5000
GER: 6000
GBR: 6000
FRA: 6000

For outgoing calls, the maximum time to wait for initial dial tone.
To comply with CTR21 standards, do not modify GER, GBR, or FRA parameters.

`freqdeglitchtime`

count

USA: 26
CAN: 26
JPN: 26
GER: 26
GBR: 26
FRA: 26

For frequency-selective ring detection, deglitch time in 1/8 ms. Range is 2-80 (.25 to 10 ms).

`freqringhigh`

Hz

USA: 54
CAN: 54
JPN: 54
GER: 60
GBR: 60
FRA: 60

For frequency-selective ring detection, the maximum frequency recognized.
To comply with CTR21 standards, do not modify GER, GBR, or FRA parameters.

`freqringlow`

Hz

USA: 16
CAN: 16
JPN: 12
GER: 21
GBR: 21
FRA: 21

For frequency-selective ring detection, the minimum frequency recognized.
To comply with CTR21 standards, do not modify GER, GBR, or FRA parameters).

`freqringperiods`

count

USA: 4
CAN: 4
JPN: 4
GER: 4
GBR: 4
FRA: 4

For frequency-selective ring detection, number of periods of the ring frequency needed to qualify. Range is 1 - 8.

`freqtolerance`

percent

USA: 10
CAN: 10
JPN: 10
GER: 10
GBR: 10
FRA: 10

For frequency-selective ring detection, frequency tolerance in percent.

`interringmaxtime`

ms

USA: 8000
CAN: 8000
JPN: 3500
GER: 9000
GBR: 8000
FRA: 8000

The maximum length of an incoming ring period (on time + off time) that can elapse before the call is considered to be abandoned.

`polaranswertime`

ms

USA: 0
CAN: 0
JPN: 0
GER: 0
GBR: 0
FRA: 0

Wait time after going off-hook answering a call before the TCP starts detecting the loop current polarity reversal on far-end disconnect (if `reversalmode` = `2` or `3`).

`polardialtime`

ms

USA: 0
CAN: 0
JPN: 0
GER: 0
GBR: 0
FRA: 0

Wait time after dialing before starting the loop current polarity reversal detection
(if `reversalmode` = `1` or `3`).

`qualloopoff`

ms

USA: 10
CAN: 10
JPN: 10
GER: 10
GBR: 10
FRA: 250

Minimum duration of loop current interruption before a hang up will be recognized.

`qualreversal`

ms

USA: 200
CAN: 200
JPN: 200
GER: 200
GBR: 200
FRA: 200

Qualification time for loop current reversal event.

`qualringoff`

ms

USA: 100
CAN: 100
JPN: 100
GER: 100
GBR: 100
FRA: 100

For voltage-sensitive ring detection, the minimum duration of loss of detected voltage to be recognized as the end of a ringing signal.

`qualringon`

ms

USA: 6
CAN: 6
JPN: 6
GER: 6
GBR: 6
FRA: 6

For voltage-sensitive ring detection, the minimum duration of detected voltage to be recognized as the start of a ringing signal.

`relaytype`

integer

`Obsolete. Kept for applications runtime compatibility.`

`releaseguardtime`

ms

USA: 1000
CAN: 1000
JPN: 1000
GER: 1500
GBR: 1000
FRA: 1000

If the hosts commands to place a call immediately after releasing a call, the line is not taken off-hook until this time has elapsed, to ensure that the CO consider the line idle.
To comply with CTR21 standards, do not modify GER parameter.

`ringdetectmode`

mask

USA: 1
CAN: 1
JPN: 1
GER: 1
GBR: 1
FRA: 1

Selects whether the ring detector is voltage-sensitive or frequency-selective:
Value Definition
`0` Voltage-sensitive
`1` Frequency-selective.

`ringsigmaxtime`

ms

USA: 3000
CAN: 3000
JPN: 3000
GER: 7000
GBR: 3000
FRA: 3000

The maximum duration of a detected incoming ringing signal before the ringing is considered to be invalidly long.

`ringsigmintime`

ms

USA: 100
CAN: 100
JPN: 100
GER: 100
GBR: 100
FRA: 70

The minimum duration of a detected ring signal before the ring signal is considered valid.

Field Name	Type/Unit	Value	Description
`CIDalertmaxtime`	ms	USA: 0 CAN: 0 JPN: 600 GER: * GBR: * FRA: 400	Maximum duration of an alert signal in Caller ID protocol (if CID is enabled). * Not supported for Germany and Britain.
`CIDminmarktime`	ms	USA: 100 CAN: 100 JPN: 50 GER: * GBR: * FRA: 50	Minimum duration of the "mark" signal of the caller ID protocol that is interpreted as such.
`CIDtype`	integer	USA: 0 CAN: 0 JPN: 1 GER: * GBR: * FRA: 2	Type of Caller ID protocol, if CID is enabled: Value Definition `0` BellCore CID Protocol `1` NTT Japan CID Protocol `2` ETSI Ringing Pulse Alerting Signal CID Protocol. * Not supported for Germany and Britain.
`CIDmaxwaittime`	ms	USA: 8000 CAN: 8000 JPN: 5000 GER: * GBR: * FRA: 4000	Maximum time to wait for Caller ID to arrive before concluding the caller has hung up (if CID is enabled). * Not supported for Germany and Britain.
`dialtonemintime`	ms	USA: 1000 CAN: 1000 JPN: 1000 GER: 3000 GBR: 3000 FRA: 3000	For outgoing calls, the minimum duration of non-precise dial tone required before dialing will begin. Set this to 0 to disable non-precise dial tone detection. (Precise dial tone detection is controlled by `ADI.START` parameters). To comply with CTR21 standards, do not modify GER, GBR, or FRA parameters.
`dialtonewaittime`	ms	USA: 5000 CAN: 5000 JPN: 5000 GER: 6000 GBR: 6000 FRA: 6000	For outgoing calls, the maximum time to wait for initial dial tone. To comply with CTR21 standards, do not modify GER, GBR, or FRA parameters.
`freqdeglitchtime`	count	USA: 26 CAN: 26 JPN: 26 GER: 26 GBR: 26 FRA: 26	For frequency-selective ring detection, deglitch time in 1/8 ms. Range is 2-80 (.25 to 10 ms).
`freqringhigh`	Hz	USA: 54 CAN: 54 JPN: 54 GER: 60 GBR: 60 FRA: 60	For frequency-selective ring detection, the maximum frequency recognized. To comply with CTR21 standards, do not modify GER, GBR, or FRA parameters.
`freqringlow`	Hz	USA: 16 CAN: 16 JPN: 12 GER: 21 GBR: 21 FRA: 21	For frequency-selective ring detection, the minimum frequency recognized. To comply with CTR21 standards, do not modify GER, GBR, or FRA parameters).
`freqringperiods`	count	USA: 4 CAN: 4 JPN: 4 GER: 4 GBR: 4 FRA: 4	For frequency-selective ring detection, number of periods of the ring frequency needed to qualify. Range is 1 - 8.
`freqtolerance`	percent	USA: 10 CAN: 10 JPN: 10 GER: 10 GBR: 10 FRA: 10	For frequency-selective ring detection, frequency tolerance in percent.
`interringmaxtime`	ms	USA: 8000 CAN: 8000 JPN: 3500 GER: 9000 GBR: 8000 FRA: 8000	The maximum length of an incoming ring period (on time + off time) that can elapse before the call is considered to be abandoned.
`polaranswertime`	ms	USA: 0 CAN: 0 JPN: 0 GER: 0 GBR: 0 FRA: 0	Wait time after going off-hook answering a call before the TCP starts detecting the loop current polarity reversal on far-end disconnect (if `reversalmode` = `2` or `3`).
`polardialtime`	ms	USA: 0 CAN: 0 JPN: 0 GER: 0 GBR: 0 FRA: 0	Wait time after dialing before starting the loop current polarity reversal detection (if `reversalmode` = `1` or `3`).
`qualloopoff`	ms	USA: 10 CAN: 10 JPN: 10 GER: 10 GBR: 10 FRA: 250	Minimum duration of loop current interruption before a hang up will be recognized.
`qualreversal`	ms	USA: 200 CAN: 200 JPN: 200 GER: 200 GBR: 200 FRA: 200	Qualification time for loop current reversal event.
`qualringoff`	ms	USA: 100 CAN: 100 JPN: 100 GER: 100 GBR: 100 FRA: 100	For voltage-sensitive ring detection, the minimum duration of loss of detected voltage to be recognized as the end of a ringing signal.
`qualringon`	ms	USA: 6 CAN: 6 JPN: 6 GER: 6 GBR: 6 FRA: 6	For voltage-sensitive ring detection, the minimum duration of detected voltage to be recognized as the start of a ringing signal.
`relaytype`	integer		`Obsolete. Kept for applications runtime compatibility.`
`releaseguardtime`	ms	USA: 1000 CAN: 1000 JPN: 1000 GER: 1500 GBR: 1000 FRA: 1000	If the hosts commands to place a call immediately after releasing a call, the line is not taken off-hook until this time has elapsed, to ensure that the CO consider the line idle. To comply with CTR21 standards, do not modify GER parameter.
`ringdetectmode`	mask	USA: 1 CAN: 1 JPN: 1 GER: 1 GBR: 1 FRA: 1	Selects whether the ring detector is voltage-sensitive or frequency-selective: Value Definition `0` Voltage-sensitive `1` Frequency-selective.
`ringsigmaxtime`	ms	USA: 3000 CAN: 3000 JPN: 3000 GER: 7000 GBR: 3000 FRA: 3000	The maximum duration of a detected incoming ringing signal before the ringing is considered to be invalidly long.
`ringsigmintime`	ms	USA: 100 CAN: 100 JPN: 100 GER: 100 GBR: 100 FRA: 70	The minimum duration of a detected ring signal before the ring signal is considered valid.

CT Access Default Parameter Changes

Certain CT Access default parameters are assigned different values in different country-specific parameter files. The following tables list CT Access default parameter changes for:

Japan

Germany

Britain

France

Japan

Field Name Type/Unit Value Description
START.dial.breaktime

ms

33

For 20 PPS dialing. The break (on-hook) duration for dial pulses.

START.dial.maketime

ms

17

The make (off-hook) duration for dial pulses.

START.dial.tonefreq1

Hz

400

First (or only) dial tone frequency.

START.dial.tonefreq2

Hz

0

Second dial tone frequency. Set this to 0 to detect a single frequency.

START.cleardown.freq1

ms

400

First frequency to detect. 500ms/500ms

START.cleardown.freq2

ms

0

Second frequency to detect, or 0 if detecting single frequency.

START.cleardown.tonecount

ms

1

Minimum number of cadenced tones detected before reporting the cleardown event. For continuous tones, set this parameter to 0.

START.cleardown.minontime

ms

450

Minimum time tone must be ON to qualify.For continuous tones, this parameter is ignored. For cadenced tones, the count is reset if any tone is shorter than this time.

START.cleardown.maxontime

ms

550

Maximum time tone must be ON to qualify.For continuous tones, this parameter is ignored. For cadenced tones, the count is reset if any tone is longer than this time.

START.cleardown.minofftime

ms

450

Maximum time tone must be ON to qualify.For continuous tones, this parameter is ignored. For cadenced tones, the count is reset if any tone is longer than this time.

START.cleardown.maxofftime

ms

550

Maximum time tone may be OFF to qualify. For continuous tones, this parameter is ignored. For cadenced tones, the count is reset if the interval between any two tones is longer than this time.

START.cleardown.qualtime

ms

450

The minimum duration of tone before a hang-up will be recognized.

TONEDETECT.qualtime

ms

450

The minimum duration of a detected tone before an event will be emitted. This also specifies the minimum duration of absence of detected tone before a tone-ended event will be emitted.

PLACECALL.callprog.maxringperiod

ms

4000

Japan ring = 1sec/2sec. The length of time of the last ringing tone plus the silence that follows, before call progress reports a ringing-ended event.

PLACECALL.callprog.silencelevel

dBm

-35

To avoid false dialtone detection, the maximum signal level that is considered to be silence.

PLACECALL.connectmask

mask

0x0183

Controls which network events will cause an outgoing call to transition to the connected state. Add connect on RING QUIT.

DIAL.breaktime

ms

33

For 20 PPS dialing. The break (on-hook) duration for dial pulses.

DIAL.maketime

ms

17

For 20 PPS dialing. The make (off-hook) duration for dial pulses.

DIAL.tonefreq1

Hz

400

First (or only) dial tone frequency. Japan dialtone = 400 Hz.

DIAL.tonefreq2

Hz

0

Second dial tone frequency. Set this to 0 to detect a single frequency.

CALLPROG.maxringperiod

ms

4000

Japan ring = 1sec/2sec. The length of time of the last ringing tone plus the silence that follows, before call progress reports a ringing-ended event.

CALLPROG.silencelevel

dBm

-35

To avoid false dialtone detection, the maximum signal level that is considered to be silence.

FSKRECEIVE.minmark

ms

50

Minimum required initial mark and seizure time.

Field Name

Type/Unit

Value

Description

START.dial.dtmfampl1

dBm

-10

The amplitude of the low frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

START.dial.dtmfampl2

dBm

-8

The amplitude of the high frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

START.dial.dtmfofftime

ms

120

The duration of the silence time between each digit.
To comply with CTR21 standards, do not modify.

START.dial.dtmfontime

ms

80

The duration of each DTMF or MF digit.
To comply with CTR21 standards, do not modify.

START.dial.dialtonewait

ms

6000

The maximum time to wait for dial tone (applies only to the ';') According to CTR21 standards, can not be higher than 8000ms.

START.dial.tonequaltime

ms

900

Minimum duration of a qualified tone to be considered dial tone.

START.dial.tonebandw1

Hz

400

First (or only) dial tone frequency.
To comply with CTR21 standards, do not modify.

START.dial.tonefreq1

Hz

250

Bandwidth of the first frequency of the dial tone detector.
To comply with CTR21 standards, do not modify.

START.dial.tonefreq2

Hz

0

Second dial tone frequency. Set this to 0 to detect a single frequency.
To comply with CTR21 standards, do not modify.

START.dial.tonebandw2

Hz

0

Bandwidth of the second frequency of the dial tone.
To comply with CTR21 standards, do not modify.

START.dial.tonebandw2

Hz

800

The inter-digit time for pulsed dialing.

START.dial.method

mask

1

Type of signaling: 1=Pulse.

START.dial.tonequalampl

dBm

-34

Minimum broadband signal amplitude to qualify for dial tone detection.

START.cleardown.bandw1

Hz

80

Bandwidth for first frequency of the cleardown detector.

START.cleardown.freq2

Hz

0

Second frequency to detect, or 0 if detecting single frequency.

START.cleardown.bandw2

Hz

0

Bandwidth for second frequency.

START.cleardown.qualtime

ms

400

The minimum duration of tone before a hang-up will be recognized.

DIAL.dtmfampl1

dBm

-10

The amplitude of the low frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

DIAL.dtmfampl2

dBm

-8

The amplitude of the high frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

DIAL.dtmfofftime

ms

120

The duration of the silence time between each digit.
To comply with CTR21 standards, do not modify.

DIAL.dtmfontime

ms

80

The duration of each DTMF or MF digit.
To comply with CTR21 standards, do not modify.

DIAL.dialtonewait

ms

6000

The maximum time to wait for dial tone (applies only to the ';' According to CTR21 standards, can not be higher than 8000 ms.

DIAL.tonequaltime

ms

900

Minimum duration of a qualified tone to be considered dial tone.

DIAL.tonefreq1

Hz

400

Detect single or dual dialtone.
To comply with CTR21 standards, do not modify.

DIAL.tonebandw1

Hz

250

Bandwidth of the first frequency of the dial tone detector.
To comply with CTR21 standards, do not modify.

DIAL.tonefreq2

Hz

0

Second dial tone frequency. Set this to 0 to detect a single frequency.
To comply with CTR21 standards, do not modify.

DIAL.tonebandw2

Hz

0

Bandwidth of the second frequency of the dial tone detector.
To comply with CTR21 standards, do not modify.

DIAL.interpulse

ms

800

The inter-digit time for pulsed dialing.

DIAL.method

Mask

1

Type of signaling: 1=Pulse.

DIAL.tonequalampl

dBm

-34

Minimum broadband signal amplitude to qualify for dial tone detection.

DTMF.ampl1

dBm

-10

The amplitude of the low frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

DTMF.ampl2

dBm

-8

The amplitude of the high frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

DTMF.offtime

ms

120

The duration of the silence time between each digit.
To comply with CTR21 standards, do not modify.

DTMF.ontime

ms

80

The duration of each DTMF or MF digit.
To comply with CTR21 standards, do not modify.

CALLPROG.ringcount

count

3

The number of ring tones that must occur before NO_ANSWER is reported.

PLACECALL.callprog.silencelevel

dBm

-28

To avoid false dialtone detection, the maximum signal level that is considered to be silence.

PLACECALL.callprog.ringcount

count

3

The number of ring tones that must occur before NO_ANSWER is reported.

PLACECALL.callprog.silencelevel

dBm

-28

To avoid false dialtone detection, the maximum signal level that is considered to be silence.

RECORD.AGCenable

mask

1

Enable automatic gain control.

RECORD.novoicetime

ms

2000

Time without voice before stop.
To comply with CTR21 standards, do not modify.

RECORD.silencetime

ms

180

Time without voice before stop.
To comply with CTR21 standards, do not modify.

RECORD.beepampl

dBm

12

Amplitude of beep during record.

PLAY.gain

dBm

10

The gain applied to the encoded audio.
According to CTR21 standards, cannot be higher than 9.7 dBV.

Germany
Britain

Field Name

Type/Unit

Value

Description

START.dial.dtmfampl1

dBm

-10

The amplitude of the low frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

START.dial.dtmfampl2

dBm

-8

The amplitude of the high frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

START.dial.dtmofftime

ms

120

The duration of the silence time between each digit.
To comply with CTR21 standards, do not modify.

START.dial.dtmfontime

ms

80

The duration of each DTMF or MF digit.
To comply with CTR21 standards, do not modify.

START.dial.dialtonewait

ms

6000

The maximum time to wait for dial tone (applies only to the ';').
According to CTR21 standards can not be higher than 8000 ms.

START.dial.tonequaltime

ms

1000

Minimum duration of a qualified tone to be considered dial tone.
To comply with CTR21 standards, do not modify.

START.dial.tonefreq1

Hz

400

First (or only) dial tone frequency.
To comply with CTR21 standards, do not modify.

START.dial.tonebandw1

Hz

250

Bandwidth of the first frequency of the dial tone detector.
To comply with CTR21 standards, do not modify.

START.dial.tonefreq2

Hz

0

Second dial tone frequency. Set this to 0 to detect a single frequency.
To comply with CTR21 standards, do not modify.

START.dial.tonebandw2

Hz

0

Bandwidth of the second frequency of the dial tone detector.
To comply with CTR21 standards, do not modify.

START.dial.interpulse

ms

800

The inter-digit time for pulsed dialing.

START.dial.maketime

ms

33

The make (off-hook) duration for dial pulses.

START.dial.breaktime

ms

67

For 20 PPS dialing. The break (on-hook) duration for dial.

DIAL.dtmfampl1

dBm

-10

The amplitude of the low frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

DIAL.dtmfampl2

dBm

-8

The amplitude of the high frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

DIAL.dtmfofftime

ms

120

The duration of the silence time between each digit.
To comply with CTR21 standards, do not modify.

DIAL.dtmfontime

ms

80

The duration of each DTMF or MF digit.
To comply with CTR21 standards, do not modify.

DIAL.dialtonewait

ms

6000

The maximum time to wait for dial tone (applies only to the ';').
According to CTR21 standards, cannot be higher than 8000 ms.

DIAL.tonequaltime

ms

1000

Minimum duration of a qualified tone to be considered dial tone.

DIAL.tonefreq1

Hz

400

Detect single or dual dialtone.
To comply with CTR21 standards, do not modify.

DIAL.tonebandw1

Hz

250

Bandwidth of the first frequency of the dial tone detector.
To comply with CTR21 standards, do not modify.

DIAL.tonefreq2

Hz

0

Second dial tone frequency. Set this to 0 to detect a single frequency.
To comply with CTR21 standards, do not modify.

DIAL.tonebandw2

Hz

0

Bandwidth of the second frequency of the dial tone detector.
To comply with CTR21 standards, do not modify.

DIAL.interpulse

ms

800

The inter-digit time for pulsed dialing.

DIAL.maketime

ms

33

The make (off-hook) duration for dial pulses.

DIAL.breaktime

ms

67

For 20 PPS dialing. The break (on-hook) duration for dial.

DTMF.ampl1

dBm

-10

The amplitude of the low frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

DTMF.ampl2

dBm

-8

The amplitude of the high frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

DTMF.offtime

ms

120

The duration of the silence time between each digit.
To comply with CTR21 standards, do not modify.

DTMF.ontime

ms

80

The duration of each DTMF or MF digit.
To comply with CTR21 standards, do not modify.

CALLPROG.ringcount

count

3

The number of ring tones that must occur before NO_ANSWER is reported.

CALLPROG.silencelevel

dBm

-31

The maximum signal level that is considered to be silence.

PLACECALL.callprog.ringcount

count

3

The number of ring tones that must occur before NO_ANSWER is reported.(Used to avoid false dialtone detection.)

PLACECALL.callprog.silencelevel

dBm

-31

The maximum signal level that is considered to be silence. (Used to avoid false dialtone detection.)

RECORD.AGCenable

mask

1

Enable automatic gain control.

RECORD.silenceampl

dBm

-48

The maximum signal level that is considered to be silence.

RECORD.beepampl

dBm

-12

Amplitude of beep during record.

PLAY.gain

dBm

-10

The gain applied to the encoded audio.
According to CTR21 standards cannot be higher than 9.7 dBV.

France

Field Name

Type/Unit

Value

Description

ADI.START.dial.breaktime

ms

67

For 20 PPS dialing. The break (on-hook) duration for dial pulses.

START.dial.maketime

ms

33

The make (off-hook) duration for dial pulses.

START.dial.dtmfampl1

dBm

-10

The amplitude of the low frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

START.dial.dtmfampl2

dBm

-8

The amplitude of the high frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

START.dial.dtmfofftime

ms

120

The duration of the silence time between each digit.
To comply with CTR21 standards, do not modify.

START.dial.dtmfontime

ms

80

The duration of each DTMF or MF digit.
To comply with CTR21 standards, do not modify.

START.dial.dialtonewait

ms

6000

The maximum time to wait for dial tone (applies only to the ';').
According to CTR21 standards, cannot be higher than 8000ms.

START.dial.interpulse

ms

860

The inter-digit time for pulsed dialing.

START.dial.tonefreq1

Hz

400

First (or only) dial tone frequency.
To comply with CTR21 standards, do not modify.

START.dial.tonebandw1

Hz

250

Bandwidth of the first frequency of the dial tone detector.
To comply with CTR21 standards, do not modify.

START.dial.tonefreq2

Hz

0

Second dial tone frequency. Set this to 0 to detect a single frequency.
To comply with CTR21 standards, do not modify.

START.dial.tonebandw2

Hz

0

Bandwidth of the second frequency of the dial tone detector.
To comply with CTR21 standards, do not modify.

START.dial.tonequalampl

dBm

-39

Minimum broadband signal amplitude to qualify for dial tone detection.

START.dial.tonequaltime

ms

100

Minimum duration of a qualified tone to be considered dial tone.

START.dial.reserved

internal

0x320

Do not modify.

START.dial.tonetotaltime

ms

1200

Maximum time to wait for a dial tone.

START.dial.flashtime

ms

100

The amount of time to assert the on-hook signaling pattern for a flash ('!' character).

START.cleardown.freq1

Hz

440

First frequency to detect.

START.cleardown.bandw1

Hz

80

Bandwidth for first frequency of the cleardown detector.

START.cleardown.freq2

Hz

0

Second frequency to detect, or 0 if detecting single frequency.

START.cleardown.bandw2

Hz

0

Bandwidth for second frequency.

START.cleardown.qualtime

ms

400

The minimum duration of tone before a hang-up will be recognized.

DIAL.breaktime

ms

67

For 20 PPS dialing. The break (on-hook) duration for dial pulses.

DIAL.maketime

ms

33

For 20 PPS dialing. The make (off-hook) duration for dial pulses.

DIAL.dtmfampl1

dBm

-10

The amplitude of the low frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

DIAL.dtmfampl2

dBm

-8

The amplitude of the high frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

DIAL.dtmfofftime

ms

120

The duration of the silence time between each digit.
To comply with CTR21 standards, do not modify.

DIAL.dtmfontime

ms

80

The duration of each DTMF or MF digit.
To comply with CTR21 standards, do not modify.

DIAL.dialtonewait

ms

6000

Timeout for ';' in string (for adiDial). According to CTR21 standards, cannot be higher than 8000 ms.

DIAL.interpulse

ms

860

The inter-digit time for pulsed dialing.

DIAL.tonefreq1

Hz

400

Detect single or dual dialtone.
To comply with CTR21 standards, do not modify.

DIAL.tonebandw1

Hz

250

Bandwidth of the first frequency of the dial tone detector.

DIAL.tonefreq2

Hz

0

Second dial tone frequency. Set this to 0 to detect a single frequency.
To comply with CTR21 standards, do not modify.

DIAL.tonebandw2

Hz

0

Bandwidth of the second frequency of the dial tone detector.
To comply with CTR21 standards, do not modify.

DIAL.tonequalampl

dBm

-39

Minimum broadband signal amplitude to qualify for dial tone detection.

DIAL.tonequaltime

ms

100

Minimum duration of a qualified tone to be considered dial tone.

DIAL.reserved

internal

0x320

Do not modify.

DIAL.tonetotaltime

ms

1200

Maximum time to wait for a dial tone.

DIAL.flashtime

ms

100

The amount of time to assert the on-hook signaling pattern for a flash ('!' character).

DTMF.ampl1

dBm

-10

The amplitude of the low frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

DTMF.ampl2

dBm

-8

The amplitude of the high frequency component of the DTMF pair.
To comply with CTR21 standards, do not modify.

DTMF.offtime

ms

120

The duration of the silence time between each digit.
To comply with CTR21 standards, do not modify.

DTMF.ontime

ms

80

The duration of each DTMF or MF digit.
To comply with CTR21 standards, do not modify.

COLLECT.firsttimeout

ms

5000

Maximum time to wait for the first digit.Use 0 to wait forever.

CALLPROG.silencelevel

dBm

-34

To avoid false dialtone detection, the maximum signal level that is considered to be silence.

CALLPROG.silencetime

ms

15000

The minimum length of a silent period after voice is detected before call progress reports a voice-ended event.

CALLPROG.ringcount

count

8

The number of ring tones that must occur before NO_ANSWER is reported.

CALLPROG.maxringperiod

ms

6250

The length of time of the last ringing tone plus the silence that follows, before call progress reports a ringing-ended event.

PLACECALL.callprog.silencelevel

dBm

-34

To avoid false dialtone detection, the maximum signal level that is considered to be silence.

PLACECALL.callprog.silencetime

ms

1500

The minimum length of a silent period after voice is detected before call progress reports a voice-ended event.

PLACECALL.callprog.ringcount

count

8

The number of ring tones that must occur before NO_ANSWER is reported.

PLACECALL.callprog.maxringperiod

ms

6250

The length of time of the last ringing tone plus the silence that follows, before call progress reports a ringing-ended event.

RECORD.AGCenable

Mask

1

Enable automatic gain control.

RECORD.silenceampl

dBm

-51

The maximum signal level that is considered to be silence.

RECORD.novoicetime

ms

9000

Time without voice before stop.

RECORD.silencetime

ms

9000

Time without voice before stop.

RECORD.beepampl

dBm

-12

Amplitude of beep during record.

PLAY.gain

dB

-10

The gain applied to the encoded audio. According to CTR21 standards, cannot be higher than 9.7 dBV.

Field Name	Type/Unit	Value	Description
`START.dial.breaktime`	ms	`33`	For 20 PPS dialing. The break (on-hook) duration for dial pulses.
`START.dial.maketime`	ms	`17`	The make (off-hook) duration for dial pulses.
`START.dial.tonefreq1`	Hz	`400`	First (or only) dial tone frequency.
`START.dial.tonefreq2`	Hz	`0`	Second dial tone frequency. Set this to 0 to detect a single frequency.
`START.cleardown.freq1`	ms	`400`	First frequency to detect. 500ms/500ms
`START.cleardown.freq2`	ms	`0`	Second frequency to detect, or 0 if detecting single frequency.
`START.cleardown.tonecount`	ms	`1`	Minimum number of cadenced tones detected before reporting the cleardown event. For continuous tones, set this parameter to 0.
`START.cleardown.minontime`	ms	`450`	Minimum time tone must be ON to qualify.For continuous tones, this parameter is ignored. For cadenced tones, the count is reset if any tone is shorter than this time.
`START.cleardown.maxontime`	ms	`550`	Maximum time tone must be ON to qualify.For continuous tones, this parameter is ignored. For cadenced tones, the count is reset if any tone is longer than this time.
`START.cleardown.minofftime`	ms	`450`	Maximum time tone must be ON to qualify.For continuous tones, this parameter is ignored. For cadenced tones, the count is reset if any tone is longer than this time.
`START.cleardown.maxofftime`	ms	`550`	Maximum time tone may be OFF to qualify. For continuous tones, this parameter is ignored. For cadenced tones, the count is reset if the interval between any two tones is longer than this time.
`START.cleardown.qualtime`	ms	`450`	The minimum duration of tone before a hang-up will be recognized.
`TONEDETECT.qualtime`	ms	`450`	The minimum duration of a detected tone before an event will be emitted. This also specifies the minimum duration of absence of detected tone before a tone-ended event will be emitted.
`PLACECALL.callprog.maxringperiod`	ms	`4000`	Japan ring = 1sec/2sec. The length of time of the last ringing tone plus the silence that follows, before call progress reports a ringing-ended event.
`PLACECALL.callprog.silencelevel`	dBm	`-35`	To avoid false dialtone detection, the maximum signal level that is considered to be silence.
`PLACECALL.connectmask`	mask	`0x0183`	Controls which network events will cause an outgoing call to transition to the connected state. Add connect on RING QUIT.
`DIAL.breaktime`	ms	`33`	For 20 PPS dialing. The break (on-hook) duration for dial pulses.
`DIAL.maketime`	ms	`17`	For 20 PPS dialing. The make (off-hook) duration for dial pulses.
`DIAL.tonefreq1`	Hz	`400`	First (or only) dial tone frequency. Japan dialtone = 400 Hz.
`DIAL.tonefreq2`	Hz	`0`	Second dial tone frequency. Set this to 0 to detect a single frequency.
`CALLPROG.maxringperiod`	ms	`4000`	Japan ring = 1sec/2sec. The length of time of the last ringing tone plus the silence that follows, before call progress reports a ringing-ended event.
`CALLPROG.silencelevel`	dBm	`-35`	To avoid false dialtone detection, the maximum signal level that is considered to be silence.
`FSKRECEIVE.minmark`	ms	`50`	Minimum required initial mark and seizure time.

Field Name	Type/Unit	Value	Description
`START.dial.dtmfampl1`	dBm	`-10`	The amplitude of the low frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`START.dial.dtmfampl2`	dBm	`-8`	The amplitude of the high frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`START.dial.dtmfofftime`	ms	`120`	The duration of the silence time between each digit. To comply with CTR21 standards, do not modify.
`START.dial.dtmfontime`	ms	`80`	The duration of each DTMF or MF digit. To comply with CTR21 standards, do not modify.
`START.dial.dialtonewait`	ms	`6000`	The maximum time to wait for dial tone (applies only to the ';') According to CTR21 standards, can not be higher than 8000ms.
`START.dial.tonequaltime`	ms	`900`	Minimum duration of a qualified tone to be considered dial tone.
`START.dial.tonebandw1`	Hz	`400`	First (or only) dial tone frequency. To comply with CTR21 standards, do not modify.
`START.dial.tonefreq1`	Hz	`250`	Bandwidth of the first frequency of the dial tone detector. To comply with CTR21 standards, do not modify.
`START.dial.tonefreq2`	Hz	`0`	Second dial tone frequency. Set this to 0 to detect a single frequency. To comply with CTR21 standards, do not modify.
`START.dial.tonebandw2`	Hz	0	Bandwidth of the second frequency of the dial tone. To comply with CTR21 standards, do not modify.
`START.dial.tonebandw2`	Hz	`800`	The inter-digit time for pulsed dialing.
`START.dial.method`	mask	`1`	Type of signaling: 1=Pulse.
`START.dial.tonequalampl`	dBm	`-34`	Minimum broadband signal amplitude to qualify for dial tone detection.
`START.cleardown.bandw1`	Hz	`80`	Bandwidth for first frequency of the cleardown detector.
`START.cleardown.freq2`	Hz	`0`	Second frequency to detect, or 0 if detecting single frequency.
`START.cleardown.bandw2`	Hz	`0`	Bandwidth for second frequency.
`START.cleardown.qualtime`	ms	`400`	The minimum duration of tone before a hang-up will be recognized.
`DIAL.dtmfampl1`	dBm	`-10`	The amplitude of the low frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`DIAL.dtmfampl2`	dBm	`-8`	The amplitude of the high frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`DIAL.dtmfofftime`	ms	`120`	The duration of the silence time between each digit. To comply with CTR21 standards, do not modify.
`DIAL.dtmfontime`	ms	`80`	The duration of each DTMF or MF digit. To comply with CTR21 standards, do not modify.
`DIAL.dialtonewait`	ms	`6000`	The maximum time to wait for dial tone (applies only to the ';' According to CTR21 standards, can not be higher than 8000 ms.
`DIAL.tonequaltime`	ms	`900`	Minimum duration of a qualified tone to be considered dial tone.
`DIAL.tonefreq1`	Hz	`400`	Detect single or dual dialtone. To comply with CTR21 standards, do not modify.
`DIAL.tonebandw1`	Hz	250	Bandwidth of the first frequency of the dial tone detector. To comply with CTR21 standards, do not modify.
`DIAL.tonefreq2`	Hz	0	Second dial tone frequency. Set this to 0 to detect a single frequency. To comply with CTR21 standards, do not modify.
`DIAL.tonebandw2`	Hz	0	Bandwidth of the second frequency of the dial tone detector. To comply with CTR21 standards, do not modify.
`DIAL.interpulse`	ms	800	The inter-digit time for pulsed dialing.
`DIAL.method`	Mask	1	Type of signaling: 1=Pulse.
`DIAL.tonequalampl`	dBm	-34	Minimum broadband signal amplitude to qualify for dial tone detection.
`DTMF.ampl1`	dBm	-10	The amplitude of the low frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`DTMF.ampl2`	dBm	-8	The amplitude of the high frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`DTMF.offtime`	ms	120	The duration of the silence time between each digit. To comply with CTR21 standards, do not modify.
`DTMF.ontime`	ms	80	The duration of each DTMF or MF digit. To comply with CTR21 standards, do not modify.
`CALLPROG.ringcount`	count	3	The number of ring tones that must occur before `NO_ANSWER` is reported.
`PLACECALL.callprog.silencelevel`	dBm	-28	To avoid false dialtone detection, the maximum signal level that is considered to be silence.
`PLACECALL.callprog.ringcount`	count	3	The number of ring tones that must occur before `NO_ANSWER` is reported.
`PLACECALL.callprog.silencelevel`	dBm	-28	To avoid false dialtone detection, the maximum signal level that is considered to be silence.
`RECORD.AGCenable`	mask	1	Enable automatic gain control.
`RECORD.novoicetime`	ms	2000	Time without voice before stop. To comply with CTR21 standards, do not modify.
`RECORD.silencetime`	ms	180	Time without voice before stop. To comply with CTR21 standards, do not modify.
`RECORD.beepampl`	dBm	12	Amplitude of beep during record.
`PLAY.gain`	dBm	10	The gain applied to the encoded audio. According to CTR21 standards, cannot be higher than 9.7 dBV.

Field Name	Type/Unit	Value	Description
`START.dial.dtmfampl1`	dBm	`-10`	The amplitude of the low frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`START.dial.dtmfampl2`	dBm	`-8`	The amplitude of the high frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`START.dial.dtmofftime`	ms	`120`	The duration of the silence time between each digit. To comply with CTR21 standards, do not modify.
`START.dial.dtmfontime`	ms	`80`	The duration of each DTMF or MF digit. To comply with CTR21 standards, do not modify.
`START.dial.dialtonewait`	ms	`6000`	The maximum time to wait for dial tone (applies only to the ';'). According to CTR21 standards can not be higher than 8000 ms.
`START.dial.tonequaltime`	ms	`1000`	Minimum duration of a qualified tone to be considered dial tone. To comply with CTR21 standards, do not modify.
`START.dial.tonefreq1`	Hz	`400`	First (or only) dial tone frequency. To comply with CTR21 standards, do not modify.
`START.dial.tonebandw1`	Hz	`250`	Bandwidth of the first frequency of the dial tone detector. To comply with CTR21 standards, do not modify.
`START.dial.tonefreq2`	Hz	`0`	Second dial tone frequency. Set this to 0 to detect a single frequency. To comply with CTR21 standards, do not modify.
`START.dial.tonebandw2`	Hz	`0`	Bandwidth of the second frequency of the dial tone detector. To comply with CTR21 standards, do not modify.
`START.dial.interpulse`	ms	`800`	The inter-digit time for pulsed dialing.
`START.dial.maketime`	ms	`33`	The make (off-hook) duration for dial pulses.
`START.dial.breaktime`	ms	`67`	For 20 PPS dialing. The break (on-hook) duration for dial.
`DIAL.dtmfampl1`	dBm	`-10`	The amplitude of the low frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`DIAL.dtmfampl2`	dBm	`-8`	The amplitude of the high frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`DIAL.dtmfofftime`	ms	`120`	The duration of the silence time between each digit. To comply with CTR21 standards, do not modify.
`DIAL.dtmfontime`	ms	`80`	The duration of each DTMF or MF digit. To comply with CTR21 standards, do not modify.
`DIAL.dialtonewait`	ms	`6000`	The maximum time to wait for dial tone (applies only to the ';'). According to CTR21 standards, cannot be higher than 8000 ms.
`DIAL.tonequaltime`	ms	`1000`	Minimum duration of a qualified tone to be considered dial tone.
`DIAL.tonefreq1`	Hz	`400`	Detect single or dual dialtone. To comply with CTR21 standards, do not modify.
`DIAL.tonebandw1`	Hz	`250`	Bandwidth of the first frequency of the dial tone detector. To comply with CTR21 standards, do not modify.
`DIAL.tonefreq2`	Hz	`0`	Second dial tone frequency. Set this to 0 to detect a single frequency. To comply with CTR21 standards, do not modify.
`DIAL.tonebandw2`	Hz	`0`	Bandwidth of the second frequency of the dial tone detector. To comply with CTR21 standards, do not modify.
`DIAL.interpulse`	ms	800	The inter-digit time for pulsed dialing.
`DIAL.maketime`	ms	33	The make (off-hook) duration for dial pulses.
`DIAL.breaktime`	ms	67	For 20 PPS dialing. The break (on-hook) duration for dial.
`DTMF.ampl1`	dBm	-10	The amplitude of the low frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`DTMF.ampl2`	dBm	-8	The amplitude of the high frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`DTMF.offtime`	ms	120	The duration of the silence time between each digit. To comply with CTR21 standards, do not modify.
`DTMF.ontime`	ms	80	The duration of each DTMF or MF digit. To comply with CTR21 standards, do not modify.
`CALLPROG.ringcount`	count	3	The number of ring tones that must occur before `NO_ANSWER` is reported.
`CALLPROG.silencelevel`	dBm	-31	The maximum signal level that is considered to be silence.
`PLACECALL.callprog.ringcount`	count	3	The number of ring tones that must occur before `NO_ANSWER` is reported.(Used to avoid false dialtone detection.)
`PLACECALL.callprog.silencelevel`	dBm	-31	The maximum signal level that is considered to be silence. (Used to avoid false dialtone detection.)
`RECORD.AGCenable`	mask	1	Enable automatic gain control.
`RECORD.silenceampl`	dBm	-48	The maximum signal level that is considered to be silence.
`RECORD.beepampl`	dBm	-12	Amplitude of beep during record.
`PLAY.gain`	dBm	-10	The gain applied to the encoded audio. According to CTR21 standards cannot be higher than 9.7 dBV.

Field Name	Type/Unit	Value	Description
`ADI.START.dial.breaktime`	ms	`67`	For 20 PPS dialing. The break (on-hook) duration for dial pulses.
`START.dial.maketime`	ms	`33`	The make (off-hook) duration for dial pulses.
`START.dial.dtmfampl1`	dBm	`-10`	The amplitude of the low frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`START.dial.dtmfampl2`	dBm	`-8`	The amplitude of the high frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`START.dial.dtmfofftime`	ms	`120`	The duration of the silence time between each digit. To comply with CTR21 standards, do not modify.
`START.dial.dtmfontime`	ms	`80`	The duration of each DTMF or MF digit. To comply with CTR21 standards, do not modify.
`START.dial.dialtonewait`	ms	`6000`	The maximum time to wait for dial tone (applies only to the ';'). According to CTR21 standards, cannot be higher than 8000ms.
`START.dial.interpulse`	ms	`860`	The inter-digit time for pulsed dialing.
`START.dial.tonefreq1`	Hz	`400`	First (or only) dial tone frequency. To comply with CTR21 standards, do not modify.
`START.dial.tonebandw1`	Hz	`250`	Bandwidth of the first frequency of the dial tone detector. To comply with CTR21 standards, do not modify.
`START.dial.tonefreq2`	Hz	`0`	Second dial tone frequency. Set this to 0 to detect a single frequency. To comply with CTR21 standards, do not modify.
`START.dial.tonebandw2`	Hz	`0`	Bandwidth of the second frequency of the dial tone detector. To comply with CTR21 standards, do not modify.
`START.dial.tonequalampl`	dBm	`-39`	Minimum broadband signal amplitude to qualify for dial tone detection.
`START.dial.tonequaltime`	ms	`100`	Minimum duration of a qualified tone to be considered dial tone.
`START.dial.reserved`	internal	`0x320`	Do not modify.
`START.dial.tonetotaltime`	ms	`1200`	Maximum time to wait for a dial tone.
`START.dial.flashtime`	ms	`100`	The amount of time to assert the on-hook signaling pattern for a flash ('!' character).
`START.cleardown.freq1`	Hz	`440`	First frequency to detect.
`START.cleardown.bandw1`	Hz	`80`	Bandwidth for first frequency of the cleardown detector.
`START.cleardown.freq2`	Hz	`0`	Second frequency to detect, or 0 if detecting single frequency.
`START.cleardown.bandw2`	Hz	`0`	Bandwidth for second frequency.
`START.cleardown.qualtime`	ms	`400`	The minimum duration of tone before a hang-up will be recognized.
`DIAL.breaktime`	ms	`67`	For 20 PPS dialing. The break (on-hook) duration for dial pulses.
`DIAL.maketime`	ms	33	For 20 PPS dialing. The make (off-hook) duration for dial pulses.
`DIAL.dtmfampl1`	dBm	-10	The amplitude of the low frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`DIAL.dtmfampl2`	dBm	-8	The amplitude of the high frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`DIAL.dtmfofftime`	ms	120	The duration of the silence time between each digit. To comply with CTR21 standards, do not modify.
`DIAL.dtmfontime`	ms	80	The duration of each DTMF or MF digit. To comply with CTR21 standards, do not modify.
`DIAL.dialtonewait`	ms	6000	Timeout for ';' in string (for adiDial). According to CTR21 standards, cannot be higher than 8000 ms.
`DIAL.interpulse`	ms	860	The inter-digit time for pulsed dialing.
`DIAL.tonefreq1`	Hz	400	Detect single or dual dialtone. To comply with CTR21 standards, do not modify.
`DIAL.tonebandw1`	Hz	250	Bandwidth of the first frequency of the dial tone detector.
`DIAL.tonefreq2`	Hz	0	Second dial tone frequency. Set this to 0 to detect a single frequency. To comply with CTR21 standards, do not modify.
`DIAL.tonebandw2`	Hz	0	Bandwidth of the second frequency of the dial tone detector. To comply with CTR21 standards, do not modify.
`DIAL.tonequalampl`	dBm	-39	Minimum broadband signal amplitude to qualify for dial tone detection.
`DIAL.tonequaltime`	ms	100	Minimum duration of a qualified tone to be considered dial tone.
`DIAL.reserved`	internal	0x320	Do not modify.
`DIAL.tonetotaltime`	ms	1200	Maximum time to wait for a dial tone.
`DIAL.flashtime`	ms	100	The amount of time to assert the on-hook signaling pattern for a flash ('!' character).
`DTMF.ampl1`	dBm	-10	The amplitude of the low frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`DTMF.ampl2`	dBm	-8	The amplitude of the high frequency component of the DTMF pair. To comply with CTR21 standards, do not modify.
`DTMF.offtime`	ms	120	The duration of the silence time between each digit. To comply with CTR21 standards, do not modify.
`DTMF.ontime`	ms	80	The duration of each DTMF or MF digit. To comply with CTR21 standards, do not modify.
`COLLECT.firsttimeout`	ms	5000	Maximum time to wait for the first digit.Use 0 to wait forever.
`CALLPROG.silencelevel`	dBm	-34	To avoid false dialtone detection, the maximum signal level that is considered to be silence.
`CALLPROG.silencetime`	ms	15000	The minimum length of a silent period after voice is detected before call progress reports a voice-ended event.
`CALLPROG.ringcount`	count	8	The number of ring tones that must occur before `NO_ANSWER` is reported.
`CALLPROG.maxringperiod`	ms	6250	The length of time of the last ringing tone plus the silence that follows, before call progress reports a ringing-ended event.
`PLACECALL.callprog.silencelevel`	dBm	-34	To avoid false dialtone detection, the maximum signal level that is considered to be silence.
`PLACECALL.callprog.silencetime`	ms	1500	The minimum length of a silent period after voice is detected before call progress reports a voice-ended event.
`PLACECALL.callprog.ringcount`	count	8	The number of ring tones that must occur before `NO_ANSWER` is reported.
`PLACECALL.callprog.maxringperiod`	ms	6250	The length of time of the last ringing tone plus the silence that follows, before call progress reports a ringing-ended event.
`RECORD.AGCenable`	Mask	1	Enable automatic gain control.
`RECORD.silenceampl`	dBm	-51	The maximum signal level that is considered to be silence.
`RECORD.novoicetime`	ms	9000	Time without voice before stop.
`RECORD.silencetime`	ms	9000	Time without voice before stop.
`RECORD.beepampl`	dBm	-12	Amplitude of beep during record.
`PLAY.gain`	dB	-10	The gain applied to the encoded audio. According to CTR21 standards, cannot be higher than 9.7 dBV.

7.4 Special TCP Behavior

The following sections describe operations that are specific to the Loop Start protocol within the framework of Natural Call Control.

7.4.1 Release Guard

If you place a call immediately after releasing a call, the line is not taken off-hook until sufficient time has elapsed to ensure that the COs consider the line idle after the previous call. The release guard is controlled by the ADI.LPS.releaseguardtime parameter. Note: The LPS0 TCP queues a command to place a call during this period and proceeds with dialing when the release guard time expires.

7.4.2 Call Transfer on Loop Start lines

Call transfer operations use mostly the same parameters as outbound call placement operations. These parameters are stored in the ADI_PLACECALL_PARMS and ADI_CALLPROG_PARMS structures. For more details about the parameters stored in these structures, refer to the ADI Service Function Reference Manual.
Additional parameters you can specify with the loop start protocol are prefix dial strings for transfer and reconnect by modifying the ADI.LPS.connstring or ADI.LPS.xferstring parameters.
When in the Connected state, if an attempt is made to transfer a call, and transfer is enabled (ADI.LPS.xfersupport = 1), the TCP executes the commands contained in the string specified by the xferstring parameter before dialing the called address that was passed to adiTransferCall or adiPlaceSecondCall.
If the dial fails, ADIEVN_CALL2_DISCONNECTED is sent up to the host, with reason ADI_DIS_DIAL_FAILURE (or ADI_DIS_NO_DIALTONE if dialtone was expected but not present). The protocol then returns to the Connected state. When returning to the Connected state, the second string specified by the connstring parameter is dialed.

7.4.3 Loop Current Reversal Parameters

If you are connected to the network that is equipped to reverse the tip and ring polarity to indicate the Far-End positive answer and/or disconnect events you may make these events available to the protocol by setting the ADI.LPS.reversalmode parameter to one of the following: Value Description 0 Disable the loop current polarity reversal detection 1 Indicate remote answer if the switch reverses polarity 2 Indicate remote hang-up if the switch reverses polarity 3 Indicate both remote answer and hang-up if the switch reverses polarity twice
If the polarity reversal detection is used as a far-end answer indication (reversalmode is set to 1 or 3), you need to wait for some time after the dialing period before starting the detector. Since the wait time duration depends on the switch you are connected to, you may need to modify the ADI.LPS.polardialtime parameter to adjust to the switch conditions.
If you use the polarity reversal to indicate the far-end hang-up (reversalmode is set to 2 or 3) some time should elapse after establishment of the loop condition and before starting the detector. This time interval may need to be adjusted to the switch conditions by setting the ADI.LPS.polaranswertime parameter with the appropriate value.

7.4.4 Caller ID Protocol Parameters

To enable your application to receive Caller ID information, complete the following steps:
Note: Caller ID is not supported on AG 2000 boards under CT Access 2.1 beta, but will be supported in the CT Access 2.1 release.

Edit your ag.cfg file to include the following statement:

AG2DSPfile = adsir.m54

Enable Caller ID TCP functionality by setting ADI.LPS.cidsupport = 1.

Do not to change the ADI.LPS.CIDtype parameter. This parameter is set in the following for different countries:

ADI.LPS.CIDtype = 0: BellCore CID Protocol. Data transmission occur during the first long silent period between two ring patterns. Both multiple and single message formats are supported by the protocol.)

ADI.LPS.CIDtype = 1: NTT Japan CID Protocol . Line reversal followed by CAR Alerting Signal precede FSK modulation transmission. Normal rings start after data transmission. The protocol supports the multiple message format.

ADI.LPS.CIDtype = 2: ETSI Ringing Pulse Alerting Signal CID Protocol. (Ringing Pulse Alert Signal precedes FSK modulation transmission. Normal rings start after data transmission. The protocol supports the multiple message format.) Used in France.

Note: If caller ID is enabled, regardless of the setting of the ADI.LPS.numrings parameter, the ADIEVN_INCOMING_CALL event is not generated until the caller ID information is received.
Invoke the adiGetCallStatus function to retrieve the Caller ID information.
See Appendix B for information about country-specific Caller ID fields that can be recognized by the software (if the user is subscribed to the CID service).

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