Introduction

This appendix presents the mechanical specifications for the AG 2000 board, including PCI and H.100 bus connectors.

The AG 2000 board has:

• 64K x 16 of SRAM

• An HMIC, which provides enhanced-compliant MVIP switching

• 2MB of DRAM

• 100 MIPS C549 parts

• NS486SXL-25

H.100 Compliant Interface

• Flexible connectivity between line interfaces, DSPs and H.100 bus.

• Switchable access to any of 4096 H.100 timeslots.

• H.100 clock master or clock slave (software-selectable).

• Compatible with any H.100 or H-MVIP compliant telephony interface.

• H.100 bus termination capability (switch-enabled).

The AG 2000 board has four indicators (LEDs) on the end bracket of the board and 14 indicators (LEDs) on the component side of the board.

The board locate indicator identifies the board using the software. The status indicator remains on after the board is booted.

The following table present the settings for High Batt and Low Batt:

	High Batt	Low Batt
Loop Start	N/A	N/A
Subscriber Loop	On	On
DID	On	N/A

On indicates that the LED must be lit for proper operation. N/A indicates that it is not required for the LED to be lit.

It is not required to have a Low Batt on the subscriber loop. If a single voltage is used, it must connect to High Batt. If the loop cable is less than 2000 feet,
-24 VDC should be used. If the loop cable is greater than 2000 feet, -48 VDC should be used.

There are 14 LEDs (7 pairs) on the component side of the AG 2000 board. (Refer to Figure 18 in Chapter 4.)

LED	Purpose	Description
D3 - D6	DSPx_RST (4 Red LEDs) DSPx_XF (4 Green LEDs)	The corresponding DSP is communicating with the NS486. Red = Problem Green = No problem
D9	HMIC (green)	Lit indicates no problem with the HMIC. Not lit indicates a problem with the HMIC.
D9	CLK (red)	Lit indicates no problem with the clock section of the HMIC. Not lit indicates a problem with the clock section of the HMIC.
D10	OWN (green)	Owner of SRAM. Lit indicates idle of host. Not lit indicates coprocessor.
D10	TD (red)	Transfer direction bit. Lit indicates host access to SRAM. Not lit indicates 486 access to SRAM.
D11	BUSY (green)	Lit = SRAM is idle. Not lit = SRAM is in use.
D11	76GO (red)	NS486 out of reset.

The AG 2000 board has two power connectors - one is external and the other is internal. Neither the external power connector or the internal power connector are used on the loop start variant of the AG 2000 board.

As shown in Figure 27, the external power connector is located on the end bracket of the AG 2000 board. For more information about this external power connector, refer to Section 2.6, Connecting Power Supplies.

Figure 27. External Power Connector

Note:	 The mating power connector is Molex 43025-1000 or an equivalent.

The following table shows the voltage requirements of the different signaling modules:

AG 2000 Board Type	High Batt	Low Batt	Ring Voltage
Loop Start	NA	NA	NA
Subscriber Loop	-48 VDC	-30 VDC	-48 VDC plus 86 VAC
DID	-48 VDC	None or -24 to -48 VDC	NA

Note: If only one voltage (-24 or -48) is used with subscriber loop, connect it to the High Batt terminal.

The AG 2000 board is rated to operate within the limits presented in the following table. This information is useful if you are not using an NMS power supply.

Input	Minimum	Maximum	Unit
High Batt	-21	-52	VDC
Low Batt	-21	High Batt	VDC
Ring Voltage		175 (-48 VDC plus 90 VRMS AC)	V peak (AC and DC)

The internal chassis power connector allows you to attach telephone battery and ringing supply voltages within the chassis. For more information about this internal power connector, refer to Section 2.6, Connecting Power Supplies. The pin assignments are the same as shown in Figure 27.

Figure 28. Internal Chassis Power Connector

The AG 2000 DIP switch is located on the component side of the board.

DIP switch S1 (shown in Figure 29) controls the H.100 bus termination. By default, all S1 switches are set to OFF (H.100 bus termination disabled). Setting switch S1 to ON enables H.100 bus termination. Only set switch S1 to ON for the boards that are on the ends of the H.100 bus. DIP switch S1 should be set to either all ON or all OFF.

Figure 29. DIP Switch on the AG 2000 Board

Power Requirements

+12V = 40 mA

-12V = 40 mA

Compliance

Natural MicroSystems obtains board-level approvals certificates for supported countries. In some countries you will require, in addition to the approval obtained by NMS for the board and its associated software, a system level approval before connecting the system to the public network. To learn what approvals you require, contact the appropriate regulatory authority in the target country.

Refer to the NMS Web site for a list of countries for which NMS has obtained approval for the AG 2000 board.

This board is in conformity with the following standards:

EN 55022	1994 Class B with upgrade kit. Refer to Figure 30.
EN 50082-1	1992
EN 60950	1992 + Amendments 1, 2, 3, and 4

In Germany, Greece, and Portugal, your application must be designed so that the AG 2000 board seizes the phone line only with the intention to make a call.

Figure 30. Loop Start Class B Upgrade (Part Number 80391)

 Subscriber Loop

In Europe, check with your sales representative for availability of AG 2000 subscriber loop products.

This board is in conformity with the following standards:

EN 55022	1994 Class A
EN 50082-1	1992
EN 60950	1992 + Amendments 1, 2, 3, and 4

This is a Class A product. In a domestic environment, this product may cause radio interference. The user may be required to take adequate measures.

DID

Direct Inward Dialing (DID) is not compatible with European service.

For certain countries, your application must include the control of the calls internally generated by the equipment. Failure to implement this regulatory requirement will void the regulatory approval granted to NMS for this NMS equipment.

Automatically Repeated Call Attempts

Country	Maximum Number of Call Attempts	Minimum Inteval (seconds) Between Numbers	Minimum Interval (mn) to Wait for a New Series
European countries	15	5	-
Australia (see note)	3	-	30
Bulgaria	12	2	60
Czech Republic	12	5, then 60	-
Israel	15	30	-
Japan (see note)	3 in 3 mn 15	- 5	3 -
Korea	3	30	-
Malaysia	2	120	-
New Zealand (see note)	5	60	-
Singapore	10	60	-
Slovakia	12	60	-
South Africa	0	60	-
Taiwan	2	60	-

Australia: For equipment with a service tone detector, a maximum number of 10 is allowed.

The Call Attempt Series parameters apply to the Equipment without distinction between a wrong number and an ineffective call. Maximum intervals between numbers is 12 mn.

Japan: There is a choice between the two requirements.

New Zealand: Not more than five call attempts to the same number within a 60 mn period with a minimum of 60 seconds between attempts, and a total of 10 call attempts to the same number.

The following specifications apply to Part Numbers 5399, 5593, 5551, and 5549 rev D.1 and higher.

Specification	Line Interface Type
	Loop Start	Subscriber Loop	DID
Connectors	1 four-ganged, four-position modular connector (4 RJ-14x jacks).	1 four-ganged, four-position modular connector (4 RJ-14x jacks).	1 four-ganged, four-position modular connector (4 RJ-14x jacks).
Return loss (ref. 600 Ohms +2.2 uF standard)	20 dB min. (ERL)	20 dB min. (ERL)	20 dB min. (ERL)
4 to 2 wire gain Tolerance	+/- 1 dB	+/- 1 dB	+/- 1 dB
4 to 2 wire gain range	+6 to -6 dB	+6 to -6 dB	+6 to -6 dB
2 to 4 wire gain Tolerance	+/- 1 dB	+/- 1 dB	+/- 1 dB
2 to 4 wire gain range	+6 to -6 dB	+6 to -6 dB	+6 to -6 dB
Frequency response 300 Hz - 3200 Hz. Reference to 1 kHz	+/- .8 dB	+/- 1 dB	+/- 1 dB
Trans-hybrid loss	17 dB min. @ 300 Hz-3.0 KHz into 600 Ohms + 2.2 uF	17 dB min. @ 300 Hz-2.5KHz into 600 Ohms + 2.2 uF	17 dB min. @ 300 Hz-2.5KHz into 600 Ohms + 2.2 uF
Signal overload level	+3 dBm at 0 dB gain	+3 dBm at 0 dB gain	+3 dBm at 0 dB gain
CMRR	> 80 dB	> 50 dB	> 50 dB
T-R input impedance (300 - 3200 Hz)	Voice band 600 ohms +2.2 uF standard	600 ohms +2.2 uF standard	600 ohms +2.2 uF standard
Idle channel noise through connection	< 20 dB rnC	< 20 dB rnC	< 20 dB rnC
Crosstalk transmit to receive channels	< -70 dB @ 1 kHz	< -70 dB @ 1 kHz	< -70 dB @ 1 kHz
T-R isolation to SELV	>1500VRMS	Not applicable.	Not applicable.
Off-hook detect	Guaranteed Detect Current > 10 mA Guaranteed No Detect Current < 3.3 mA	Guaranteed Detect Current > 13 mA Guaranteed No Detect Current < 7 mA	Guaranteed Detect Current > 13 mA Guaranteed No Detect Current < 7 mA
Operating loop current	18 mA to 70 mA	13 mA to 31 mA	13 mA to 31 mA
Loop current and polarity detect	Single bit indicates if the current is flowing from Tip to Ring or Ring to Tip.	Not applicable.	Not applicable.
Ring detection	Guaranteed Detect 30 VRMS 17 - 33 Hz (US version) Guaranteed No Detect No detect <15 VRMS (0 - 5 kHz)	Not applicable.	Not applicable.
Maximum cable distance: At 48 V, 24 AWG At 30 V, 24 AWG	Not applicable.	18,000 feet (1800 Ohms 2,000 feet (600 Ohms)	18,000 feet (1800 Ohms Not applicable.
Maximum ringer equivalence load	Not applicable.	1.5	Not applicable.

Note: European models change only where required to conform to regulation CTR-21. For example, T-R input impedance is 270 Ohms in series with a parallel combination of 750 Ohms and 150 uF.

The QSLAC files that start with the characters a2usa will provide an input impedance of 600 Ohms + 2.2 uF. However, a selection of files is provided (refer to Chapter 3) to permit applications such as the Switching service, which does not use echo cancellation, to reduce echo. The default file is sufficient for most applications.

Subscriber Loop Ringing Power Supply (32029)

Feature	Description
Input power	100 - 132/200 - 264 VAC 47 - 63 Hz Automatic Range Selection
DC output	1. -24 VDC/-30 VDC 2. -48 VDC @ 1.2 A The combined total of 1 and 2 above is less than 1.2 A. The -24 output is switch selectable to -24 VDC or -30 VDC.
DC output regulation	Less than 1%
DC output ripple	Less than 1% peak to peak
Output isolation	-24 VDC/-30 VDC and -48 VDC isolated from chassis ground. AC output is referenced to -48 VDC output.
AC output	86 VAC @ 0.13 A for 17, 20, and 50 Hz 72 VAC @ 0.13 A for 25 Hz
AC output frequency	17, 20, 25, and 50 Hz +/- 10%. Switch selectable.
AC output regulation	Less than 10% for the full input voltage range and no load to full load.
AC output wave form	Simulated sine wave with less than 20% distortion.
Current limiting	All outputs have current limiting with full protection and auto recovery.
Output indicator	Green LED indicates that all outputs are operating.
Temperature range	Ambient temperature range is 0 to 50 degrees C for full load operation.
Construction	Fully enclosed aluminum chassis.

Development Test Port Connector

The development test port connector on the AG 2000 board (shown in Figure 31) gives developers easy access to the transmit for ports 7 and 8 and receive for port 8 for fast debugging of applications.

WARNING:

This connector is not intended or certified for use at end-user sites.

The connector is a hardware interface composed of a 4 pin connector and amplifier circuitry provided on the AG 2000 board which allows audio ports from port 7 and port 8 to be summed together and played out. Audio can be recorded into port 8.

WARNING:

Disconnect the cable from the port 7 and port 8 trunk interfaces while using the test port connector to avoid causing unwanted distortion, noise, and attenuation.

Figure 31. Development Test Port Connector on the AG 2000 Board

Connect the Line out to an amplified speaker and listen to audio. Connect a device, such as a tape player, to TST_IN to record messages or prompts on the system.

The following signals are available on the connector: summation of Trunk 7 and Trunk 8 out, Trunk 8 in, and Gnd.

The output audio amplifier has a 100 Ohm output impedance. It is designed to interface to an amplified speaker. If it is connected to an un-amplified speaker, the audio will have a very low output level.

You can listen to two different digital audio streams simultaneously. The development test port connector has an onboard hardware summing amplifier. If you play audio from one stream to port 8 (stream 1:7) and the audio from another stream to port 7 (stream 1:6), the resulting audio will be summed by the hardware. While this is occurring, audio cannot be recorded in. Therefore, simultaneous play and record is not possible.

A 0.774 VRMS signal coming in on TST_IN will record at a 0 dBm signal into the CODEC. Speech levels should not have peaks exceeding this level. The average speech level should be approximately 0.1 VRMS at TST_IN. The input impedance is 20K ohms.

Figure 32 shows the pin-out and mating connector for the test port connector:

Figure 32. Pin-Out for the Development Test Port Connector

The mating connector is a Molex 50-57-9404. The pin which must also be inserted into the connector is the female pin (Molex 70058).

Pin	Description
1	Audio to the Codec Port 8
2	Ground
3	Ground
4	Audio from the Codec Port 7 and 8