(Page 42 of 42 in this chapter)

SM_CHANNEL_MAINT_RQ

Purpose

Use this structure to send (from NS to MNS) a SERVICE message.

Conn_id

A currently unused id. Macro Description Q.931 IE 4 E S S E 1 0 N I 2 D M S 1 0 0 E T S I V N 6 H K G A U S T E L 1 N T T K O R E A Q S I G acu_mns_service_action_type Action type (set to I_MAINTENANCE). Change Status x x x acu_mns_service_b_chan B channel number (only used if acu_mns_service_pref = I_PREF_B_CHANNEL) Channel id x x x acu_mns_service_error Not used. (Not used.) acu_mns_service_int_id Interface id (NAI). Channel id x x x acu_mns_service_pref Service preference (I_PREF_INTERFACE or I_PREF_B_CHANNEL). Channel id x x x acu_mns_service_status New status (I_D_STATE_IS, I_D_STATE_OOS, I_B_CHAN_IN_SERVICE, or I_B_CHAN_OUT_OF_ SERVICE). Change Status x x x
To request that a SERVICE message be sent, send the request directly to SM. To do so, set the from_ent, to_ent and to_sapi fields in ISDN_MESSAGE as follows: Field Setting from_ent ENT_SM to_ent ENT_MNS to_sapi 0

Field	Setting
`from_ent`	`ENT_SM`
`to_ent`	`ENT_MNS`
`to_sapi`	`0`

8.3 Data Types and Constants In Primitives

8.3.1 User Rate Values

These values specify the user rate in ACU_CONN_IN, ACU_CONN_RQ, ACU_CONN_RS and ACU_SETUP_REPORT_IN messages.
These values are defined in isdnacu.h. Rate Description ACU_RA_50 0.050 kbits/s CCITT V.6 and X.1 ACU_RA_75 0.075 kbits/s CCITT V.6 and X.1 ACU_RA_75_1200 0.075/1.2 kbits/s CCITT V.6 and x.1 ACU_RA_100 0.100 kbits/s CCITT V.6 and X.1 ACU_RA_110 0.110 kbits/s CCITT V.6 and X.1 ACU_RA_134 0.1345 kbits/s CCITT X.1 ACU_RA_150 0.150 kbits/s CCITT V.6 and X.1 ACU_RA_200 0.200 kbits/s CCITT V.6 and X.1 ACU_RA_300 0.300 kbits/s CCITT V.6 and X.1 ACU_RA_600 0.6 kbits/s CCITT V.6 and x.1 ACU_RA_1200 1.2 kbits/s CCITT V.6 ACU_RA_1200_75 1.2/0.075 kbits/s CCITT V.6 and x.1 ACU_RA_2400 2.4 kbits/s CCITT V.6 and X.1 ACU_RA_3600 3.6 kbits/s CCITT V.6 ACU_RA_4800 4.8 kbits/s CCITT V.6 and x.1 ACU_RA_7200 7.2 kbits/s CCITT V.6 ACU_RA_8000 8 kbits/s CCITT I.460 ACU_RA_9600 9.6 kbits/s CCITT V.6 and x.1 ACU_RA_12000 12 kbits/s CCITT V.6 ACU_RA_14400 14.4 kbits/s CCITT V.6 ACU_RA_16000 16 kbits/s CCITT I.460 ACU_RA_19200 19.2 kbits/s CCITT V.6 ACU_RA_32000 32 kbits/s CCITT I.460 ACU_RA_38400 38.4 kbits/s extended V.14 ACU_RA_38400_NO_ETSI 38.4 kbits/s extended V.14 (VN3) NON ETSI ACU_RA_48000 48 kbits/s CCITT V.6 and X.1 ACU_RA_56000 56 kbits/s CCITT V.6 ACU_RA_57600 57.6 kbits/s extended V.14 (VN3) NON ETSI NON CCITT ACU_RA_64000 64 kbits/s CCITT I.460

Rate	Description
`ACU_RA_50`	0.050 kbits/s CCITT V.6 and X.1
`ACU_RA_75`	0.075 kbits/s CCITT V.6 and X.1
`ACU_RA_75_1200`	0.075/1.2 kbits/s CCITT V.6 and x.1
`ACU_RA_100`	0.100 kbits/s CCITT V.6 and X.1
`ACU_RA_110`	0.110 kbits/s CCITT V.6 and X.1
`ACU_RA_134`	0.1345 kbits/s CCITT X.1
`ACU_RA_150`	0.150 kbits/s CCITT V.6 and X.1
`ACU_RA_200`	0.200 kbits/s CCITT V.6 and X.1
`ACU_RA_300`	0.300 kbits/s CCITT V.6 and X.1
`ACU_RA_600`	0.6 kbits/s CCITT V.6 and x.1
`ACU_RA_1200`	1.2 kbits/s CCITT V.6
`ACU_RA_1200_75`	1.2/0.075 kbits/s CCITT V.6 and x.1
`ACU_RA_2400`	2.4 kbits/s CCITT V.6 and X.1
`ACU_RA_3600`	3.6 kbits/s CCITT V.6
`ACU_RA_4800`	4.8 kbits/s CCITT V.6 and x.1
`ACU_RA_7200`	7.2 kbits/s CCITT V.6
`ACU_RA_8000`	8 kbits/s CCITT I.460
`ACU_RA_9600`	9.6 kbits/s CCITT V.6 and x.1
`ACU_RA_12000`	12 kbits/s CCITT V.6
`ACU_RA_14400`	14.4 kbits/s CCITT V.6
`ACU_RA_16000`	16 kbits/s CCITT I.460
`ACU_RA_19200`	19.2 kbits/s CCITT V.6
`ACU_RA_32000`	32 kbits/s CCITT I.460
`ACU_RA_38400`	38.4 kbits/s extended V.14
`ACU_RA_38400_NO_ETSI`	38.4 kbits/s extended V.14 (VN3) NON ETSI
`ACU_RA_48000`	48 kbits/s CCITT V.6 and X.1
`ACU_RA_56000`	56 kbits/s CCITT V.6
`ACU_RA_57600`	57.6 kbits/s extended V.14 (VN3) NON ETSI NON CCITT
`ACU_RA_64000`	64 kbits/s CCITT I.460

8.3.2 Service Values

These values specify the service in ACU_CONN_CO, ACU_CONN_IN, ACU_CONN_RQ, ACU_CONN_RS, ACU_FACILITY_IN, ACU_FACILITY_RQ, ACU_RESUME_CO, ACU_RESUME_RQ, and ACU_SETUP_REPORT_IN messages.
These values are defined in isdnval.h. Service Description FAX_SERVICE Call for G3 facsimile service FAX_4_SERVICE Call for G4 facsimile service DATA_SERVICE Call for "data" service DATA_GCI_SERVICE Call for "data" service on GCI bus DATA_56KBS_SERVICE Call for "data at 56 KBS" service RAW_DATA_SERVICE Call for "raw data" service on GCI bus: no MPH_B_INIT_RQ is generated (no B-channel driver is associated) DATA_TRANS_SERVICE Call for transparent data service MODEM_SERVICE Call for modem data service AUDIO_7_SERVICE Call for 7khz Audio service X25_SERVICE Call for X.25 circuit-mode service X25_PACKET_SERVICE Call for X.25 packet-mode service VOICE_SERVICE Call for voice service VOICE_GCI_SERVICE Call for voice service on GCI bus RAW_TELEPHONY_SERVICE Call for "raw telephony" service on GCI bus: no MPH_B_INIT_RQ generated (no B-channel driver is associated) VOICE_TRANS_SERVICE Call for transparent voice service V110_SERVICE Call for V.110 service V120_SERVICE Call for V.120 service VIDEO_SERVICE Call for VIDEO service TDD_SERVICE Call for TDD service DATA_H0_SERVICE Call for data using H0 (384kbs) channel service (PRI only) DATA_H11_SERVICE Call for data using H11 (1536kbs) channel service DATA_H12_SERVICE Call for data using H12 (1536kbs) channel service DATA_MULTIRATE_SERVICE Call for data using Multirate (2..30*64kbs) channel service DATA_128KBS_SERVICE Call for data using 2*64kbs channel service (BRI only) NO_B_CHAN_SERVICE Call for no B-channel service (bearer-independent calls - QSIG only) FAX_RELAY_SERVICE Call for G3 facsimile service (for use with "Physical Relay" process) DATA_RELAY_SERVICE Call for "data" service (for use with "Physical Relay" process) DATA_56KBS_RELAY_SERVICE Call for "data at 56 KBS" service (for use with 'Physical Relay' process) DATA_TRANS_RELAY_SERVICE Call for data transparent service (for use with "Physical Relay" process) MODEM_RELAY_SERVICE Call for modem data service (for use with "Physical Relay" process) X25_RELAY_SERVICE Call for X.25 circuit-mode service (for use with "Physical Relay" process) VOICE_RELAY_SERVICE Call for voice service (for use with "Physical Relay" process) VOICE_GCI_RELAY_SERVICE Call for voice service on GCI bus (for use with "Physical Relay" process) NO_SERVICE Undefined service

Service	Description
`FAX_SERVICE`	Call for G3 facsimile service
`FAX_4_SERVICE`	Call for G4 facsimile service
`DATA_SERVICE`	Call for "data" service
`DATA_GCI_SERVICE`	Call for "data" service on GCI bus
`DATA_56KBS_SERVICE`	Call for "data at 56 KBS" service
`RAW_DATA_SERVICE`	Call for "raw data" service on GCI bus: no `MPH_B_INIT_RQ` is generated (no B-channel driver is associated)
`DATA_TRANS_SERVICE`	Call for transparent data service
`MODEM_SERVICE`	Call for modem data service
`AUDIO_7_SERVICE`	Call for 7khz Audio service
`X25_SERVICE`	Call for X.25 circuit-mode service
`X25_PACKET_SERVICE`	Call for X.25 packet-mode service
`VOICE_SERVICE`	Call for voice service
`VOICE_GCI_SERVICE`	Call for voice service on GCI bus
`RAW_TELEPHONY_SERVICE`	Call for "raw telephony" service on GCI bus: no MPH_B_INIT_RQ generated (no B-channel driver is associated)
`VOICE_TRANS_SERVICE`	Call for transparent voice service
`V110_SERVICE`	Call for V.110 service
`V120_SERVICE`	Call for V.120 service
`VIDEO_SERVICE`	Call for VIDEO service
`TDD_SERVICE`	Call for TDD service
`DATA_H0_SERVICE`	Call for data using H0 (384kbs) channel service (PRI only)
`DATA_H11_SERVICE`	Call for data using H11 (1536kbs) channel service
`DATA_H12_SERVICE`	Call for data using H12 (1536kbs) channel service
`DATA_MULTIRATE_SERVICE`	Call for data using Multirate (2..30*64kbs) channel service
`DATA_128KBS_SERVICE`	Call for data using 2*64kbs channel service (BRI only)
`NO_B_CHAN_SERVICE`	Call for no B-channel service (bearer-independent calls - QSIG only)
`FAX_RELAY_SERVICE`	Call for G3 facsimile service (for use with "Physical Relay" process)
`DATA_RELAY_SERVICE`	Call for "data" service (for use with "Physical Relay" process)
`DATA_56KBS_RELAY_SERVICE`	Call for "data at 56 KBS" service (for use with 'Physical Relay' process)
`DATA_TRANS_RELAY_SERVICE`	Call for data transparent service (for use with "Physical Relay" process)
`MODEM_RELAY_SERVICE`	Call for modem data service (for use with "Physical Relay" process)
`X25_RELAY_SERVICE`	Call for X.25 circuit-mode service (for use with "Physical Relay" process)
`VOICE_RELAY_SERVICE`	Call for voice service (for use with "Physical Relay" process)
`VOICE_GCI_RELAY_SERVICE`	Call for voice service on GCI bus (for use with "Physical Relay" process)
`NO_SERVICE`	Undefined service

8.3.3 Number Type Values

These values specify the calling, called, and redirecting number type in ACU_CONN_IN, ACU_SETUP_REPORT_IN, and ACU_ALERT_IN messages.
These values are defined in isdnval.h. Type Description N_TYPE_UNKNOWN (Default for all variants except 4ESS, VN6) Unknown N_TYPE_INTERNATIONAL International number N_TYPE_NATIONAL (Default for 4ESS and VN6 variants) National number N_TYPE_NET_SPF Network specific number N_TYPE_SUBSCRIBER Subscriber number N_TYPE_LOCAL AT5 local (directory) number N_TYPE_ABBREVIATED Abbreviated number

Type	Description
`N_TYPE_UNKNOWN` (Default for all variants except 4ESS, VN6)	Unknown
`N_TYPE_INTERNATIONAL`	International number
`N_TYPE_NATIONAL` (Default for 4ESS and VN6 variants)	National number
`N_TYPE_NET_SPF`	Network specific number
`N_TYPE_SUBSCRIBER`	Subscriber number
`N_TYPE_LOCAL`	AT5 local (directory) number
`N_TYPE_ABBREVIATED`	Abbreviated number

8.3.4 Plan Values

These values specify the calling, called, and redirecting number plan in ACU_ALERT_IN, ACU_CONN_IN, ACU_CONN_RQ, and ACU_SETUP_REPORT_IN messages.
These values are defined in isdnval.h. Plan Description N_PLAN_UNKNOWN (Default for all variants except VN6) Unknown N_PLAN_ISDN (Default for VN6 and AusTel1 variants) ISDN/telephony numbering plan (CCITT E.164/E.163). N_PLAN_TELEPHONE Telephony - not in CEPT N_PLAN_DATA Data n. Plan (CCITT x.121) N_PLAN_TELEX Telex n. Plan (CCITT f.69) N_PLAN_NATIONAL National standard numbering plan N_PLAN_PRIVATE Private numbering plan

Plan	Description
`N_PLAN_UNKNOWN` (Default for all variants except VN6)	Unknown
`N_PLAN_ISDN` (Default for VN6 and AusTel1 variants)	ISDN/telephony numbering plan (CCITT E.164/E.163).
`N_PLAN_TELEPHONE`	Telephony - not in CEPT
`N_PLAN_DATA`	Data n. Plan (CCITT x.121)
`N_PLAN_TELEX`	Telex n. Plan (CCITT f.69)
`N_PLAN_NATIONAL`	National standard numbering plan
`N_PLAN_PRIVATE`	Private numbering plan

8.3.5 Screening Indicator Values

These values specify the calling and redirecting number screeening indicator in ACU_ALERT_IN, ACU_ALERT_RQ, ACU_CONN_IN, ACU_CONN_RQ, and ACU_SETUP_REPORT_IN messages.
These values are defined in isdnval.h. Screening Indicator Description N_SCREEN_USER_PROVIDED (Default) User-provided, not screened N_SCREEN_USER_PASSED (Default for Austel) User-provided, verified and passed N_SCREEN_USER_FAILED User-provided, verified and failed N_SCREEN_NETWORK_PROVIDED Network provided

Screening Indicator	Description
`N_SCREEN_USER_PROVIDED` (Default)	User-provided, not screened
`N_SCREEN_USER_PASSED` (Default for Austel)	User-provided, verified and passed
`N_SCREEN_USER_FAILED`	User-provided, verified and failed
`N_SCREEN_NETWORK_PROVIDED`	Network provided

8.3.6 Redirecting Reason Values

These values specify the redirecting reason in ACU_ALERT_IN, ACU_CONN_CO, ACU_CONN_IN, ACU_CONN_RQ, and ACU_SETUP_REPORT_IN messages.
These values are defined in isdnval.h. Redirecting Reason Description REASON_UNKNOWN (Default) Unknown REASON_CALL_FORWARDING_BUSY Call forwarding busy REASON_CALL_FORWARDING_NO_REPLY Call forwarding no reply REASON_CALL_FORWARDING_DTE_OUT Call forwarding DTE out of order REASON_CALL_FORWARDING_BY_CALLED Call forwarding by called equipment REASON_CALL_TRANSFER Call transfer REASON_CALL_PICKUP Call pickup REASON_CALL_FORWARDING_UNCONDITIONAL Call forwarding unconditional

Redirecting Reason	Description
`REASON_UNKNOWN` (Default)	Unknown
`REASON_CALL_FORWARDING_BUSY`	Call forwarding busy
`REASON_CALL_FORWARDING_NO_REPLY`	Call forwarding no reply
`REASON_CALL_FORWARDING_DTE_OUT`	Call forwarding DTE out of order
`REASON_CALL_FORWARDING_BY_CALLED`	Call forwarding by called equipment
`REASON_CALL_TRANSFER`	Call transfer
`REASON_CALL_PICKUP`	Call pickup
`REASON_CALL_FORWARDING_UNCONDITIONAL`	Call forwarding unconditional

8.3.7 Location Values

These values specify the location in ACU_ALERT_IN, ACU_ALERT_RQ, ACU_CALL_PROC_IN, ACU_CALL_PROC_RQ, ACU_CLEAR_IN, ACU_CONN_IN, ACU_CONN_RQ, ACU_PROGRESS_IN, ACU_PROGRESS_RQ, and ACU_SETUP_REPORT_IN messages.
These values are defined in isdnval.h.

Location

Description

LOC_USER (Default if partner_equip argument passed to isdnStartProtocol is EQUIPMENT_NT.)

User

LOC_PR_LOCAL_USER

Private network serving the local user

LOC_NETWORK (Default if partner_equip argument passed to isdnStartProtocol is EQUIPMENT_TE.)

Location network (SWD)

LOC_TRANSIT_NET

Transit network

LOC_PU_REMOTE_USER

Public network serving the remote user

LOC_PR_REMOTE_USER

Private network serving the remote user

BEYOND_IWP (Default for DMS100 variant.)

Network beyond interworking point

Location	Description
`LOC_USER` (Default if partner_equip argument passed to isdnStartProtocol is `EQUIPMENT_NT`.)	User
`LOC_PR_LOCAL_USER`	Private network serving the local user
`LOC_NETWORK` (Default if partner_equip argument passed to isdnStartProtocol is `EQUIPMENT_TE`.)	Location network (SWD)
`LOC_TRANSIT_NET`	Transit network
`LOC_PU_REMOTE_USER`	Public network serving the remote user
`LOC_PR_REMOTE_USER`	Private network serving the remote user
`BEYOND_IWP` (Default for DMS100 variant.)	Network beyond interworking point

8.3.8 UUI Protocol Discriminator Values

These values specify the UUI protocol discriminator in ACU_ALERT_RQ, ACU_CLEAR_CO, ACU_CLEAR_RQ, ACU_CLEAR_RS, ACU_CONN_CO, ACU_CONN_IN, ACU_CONN_RQ, ACU_CONN_RS, ACU_SETUP_REPORT_ IN, ACU_USER_INFO_IN, and ACU_USER_INFO_RQ messages.
These values are defined in isdnval.h. UUI Protocol Discriminator Description UUI_USER_SPF (Default for HKG variant) User specific coding UUI_OSI OSI UUI_X244 Rec. X.244 UUI_SYSTEM_MANAGEMENT Reserved for system management convergence function UUI_IA5 (Default) IA5 characters (ASCII) UUI_V120 Rec. V.120 UUI_Q931 Rec. Q.931

UUI Protocol Discriminator	Description
`UUI_USER_SPF` (Default for HKG variant)	User specific coding
`UUI_OSI`	OSI
`UUI_X244`	Rec. X.244
`UUI_SYSTEM_MANAGEMENT`	Reserved for system management convergence function
`UUI_IA5` (Default)	IA5 characters (ASCII)
`UUI_V120`	Rec. V.120
`UUI_Q931`	Rec. Q.931

8.3.9 pcs_user Protocol Discriminator Values

These values specify the pcs_user protocol discriminator (the first byte of the pcs_user string) in ACU_CALL_PROC_IN, ACU_CALL_PROC_RQ, ACU_CLEAR_CO, ACU_CLEAR_IN, ACU_CLEAR_RQ, ACU_CLEAR_RS, ACU_CONN_CO, ACU_CONN_IN, ACU_CONN_RQ, ACU_CONN_RS, ACU_FACILITY_IN, ACU_FACILITY_RQ, ACU_PROGRESS_IN and ACU_SETUP_REPORT_IN messages.
These values are defined in isdnval.h. pcs_user Protocol Discriminator Description PCS_USER_TRANSGROUP Transgroupe PCS_USER_PUBLIPHONE Publiphone PCS_USER_CALL_ROUTING Call-routing

pcs_user Protocol Discriminator	Description
`PCS_USER_TRANSGROUP`	Transgroupe
`PCS_USER_PUBLIPHONE`	Publiphone
`PCS_USER_CALL_ROUTING`	Call-routing

8.3.10 Signal Values

These values specify the signal in ACU_ALERT_IN, ACU_ALERT_RQ, ACU_CALL_PROC_IN, ACU_CLEAR_IN, ACU_CLEAR_RQ, ACU_CONN_CO, ACU_INFORMATION_IN, ACU_INFORMATION_RQ, and ACU_PROGRESS_IN messages.
These values are defined in isdnval.h. Signal Value Description ACUDIAL_ON Dial tone on ACURING_BACK_ON Ring back tone on ACUNET_CONGEST_ON Network congest tone on ACUBUSY_ON Busy tone on ACUTONES_OFF Tones off ACUALERTING_OFF Alerting off ACUCREDIT_CARD_TONE_ON Credit card tone ON ACUOUT_OF_RANGE_TONE_ON Out of range tone ON ACUQUEUING_TONE_ON Queuing tone ON ACUAUDIBLE_TONE_ON Audible tone ON ACUVISUAL_ALERT_1_ON Visual alert #1 ON ACUVISUAL_ALERT_2_ON Visual alert #2 ON ACUSATCOM_CALL_NOTIFY SATCOM call notify

Signal Value	Description
`ACUDIAL_ON`	Dial tone on
`ACURING_BACK_ON`	Ring back tone on
`ACUNET_CONGEST_ON`	Network congest tone on
`ACUBUSY_ON`	Busy tone on
`ACUTONES_OFF`	Tones off
`ACUALERTING_OFF`	Alerting off
`ACUCREDIT_CARD_TONE_ON`	Credit card tone ON
`ACUOUT_OF_RANGE_TONE_ON`	Out of range tone ON
`ACUQUEUING_TONE_ON`	Queuing tone ON
`ACUAUDIBLE_TONE_ON`	Audible tone ON
`ACUVISUAL_ALERT_1_ON`	Visual alert #1 ON
`ACUVISUAL_ALERT_2_ON`	Visual alert #2 ON
`ACUSATCOM_CALL_NOTIFY`	SATCOM call notify

8.3.11 Network-Provided Clearing Cause Values

These values specify the network-provided clearing cause in ACU_CLEAR_CO, ACU_CLEAR_IN, ACU_RESUME_CO and ACU_SUSPEND_CO messages.
These values are defined in isdnacu.h. Network-Provided Clearing Cause Description ACU_CAUSE_ACU_BAD_ADDRESS Value 0: bad context addressing info, or no free context available ACU_CAUSE_ACU_BAD_SERVICE Value 1: bad ACU service value ACU_CAUSE_ACU_COLLISION Value 2: incoming call collision ACU_CAUSE_ACU_FAC_REJECTED Value 3: Facility request rejected by ACU ACU_NETWORK_CAUSE_NIL Value F: unspecified

Network-Provided Clearing Cause	Description
`ACU_CAUSE_ACU_BAD_ADDRESS`	Value 0: bad context addressing info, or no free context available
`ACU_CAUSE_ACU_BAD_SERVICE`	Value 1: bad ACU service value
`ACU_CAUSE_ACU_COLLISION`	Value 2: incoming call collision
`ACU_CAUSE_ACU_FAC_REJECTED`	Value 3: Facility request rejected by ACU
`ACU_NETWORK_CAUSE_NIL`	Value F: unspecified

8.3.12 Clear Code Values

These values specify the clear code in ACU_CLEAR_CO and ACU_CLEAR_IN messages.
These values are defined in isdnacu.h. Clear Code Description ACURC_BUSY Busy ACURC_NOPROCEED No proceed indication (dial tone) ACURC_NOANSWER No answer ACURC_NOAUTOANSWER No auto-answer tone detected ACURC_CONGESTED GSTN or System is congested ACURC_INCOMING Incoming call detected while trying to dial ACURC_NOLINE Wrong Addressing info, or context already used ACURC_ERRNUM Errored number ACURC_INHNUM Inhibited number ACURC_2MNUM Too many errored/inhibited numbers ACURC_HUNGUP Remote has hung up or incident on connection ACURC_NETWORK_ERROR Network disconnected us ACURC_TIMEOUT Timeout error ACURC_BAD_SERVICE Bad service id in ACU_CONN_RQ/RS ACURC_INTERNAL Other internal error

Clear Code	Description
`ACURC_BUSY`	Busy
`ACURC_NOPROCEED`	No proceed indication (dial tone)
`ACURC_NOANSWER`	No answer
`ACURC_NOAUTOANSWER`	No auto-answer tone detected
`ACURC_CONGESTED`	GSTN or System is congested
`ACURC_INCOMING`	Incoming call detected while trying to dial
`ACURC_NOLINE`	Wrong Addressing info, or context already used
`ACURC_ERRNUM`	Errored number
`ACURC_INHNUM`	Inhibited number
`ACURC_2MNUM`	Too many errored/inhibited numbers
`ACURC_HUNGUP`	Remote has hung up or incident on connection
`ACURC_NETWORK_ERROR`	Network disconnected us
`ACURC_TIMEOUT`	Timeout error
`ACURC_BAD_SERVICE`	Bad service id in `ACU_CONN_RQ`/`RS`
`ACURC_INTERNAL`	Other internal error

8.3.13 Facility Code Values

These values specify the facility code in ACU_FACILITY_RQ, ACU_FACILITY_IN, and ACU_FACILITY_RQ messages.
These values are defined in isdnacu.h. Facility Code Description ACU_FAC_CALL_FORWARDING Premise transfer ACU_FAC_CALL_DEFLECTION Terminal transfer ACU_FAC_CHARGING Charging ACU_FAC_CHARGING_TOTAL Charging total cost ACU_FAC_HOLD Call hold ACU_FAC_RETRIEVE Call retrieve ACU_FAC_ALTERNATE To and from facility ACU_FAC_TRF Transfer ACU_FAC_THREE_PARTY Conferencing ACU_FAC_MALICIOUS_CALL_ID Malicious call identification ACU_FAC_RECALL Recall facility (ETSI) ACU_FAC_TRANSPARENT Transparent facility for CC&NS ACU_FAC_CALL_APPEAR Call appearence request ACU_FAC_FEATURE_ACT Feature activation request ACU_FAC_DROP Drop call ACU_FAC_FEATURE_IND Feature indication (NT->TE only) ACU_FAC_PCS_USER_ONLY Send PCS-user information only, with no other facility request. Only for VN6, within ACU_FACILITY_RQ.

Facility Code	Description
`ACU_FAC_CALL_FORWARDING`	Premise transfer
`ACU_FAC_CALL_DEFLECTION`	Terminal transfer
`ACU_FAC_CHARGING`	Charging
`ACU_FAC_CHARGING_TOTAL`	Charging total cost
`ACU_FAC_HOLD`	Call hold
`ACU_FAC_RETRIEVE`	Call retrieve
`ACU_FAC_ALTERNATE`	To and from facility
`ACU_FAC_TRF`	Transfer
`ACU_FAC_THREE_PARTY`	Conferencing
`ACU_FAC_MALICIOUS_CALL_ID`	Malicious call identification
`ACU_FAC_RECALL`	Recall facility (ETSI)
`ACU_FAC_TRANSPARENT`	Transparent facility for CC&NS
`ACU_FAC_CALL_APPEAR`	Call appearence request
`ACU_FAC_FEATURE_ACT`	Feature activation request
`ACU_FAC_DROP`	Drop call
`ACU_FAC_FEATURE_IND`	Feature indication (NT->TE only)
`ACU_FAC_PCS_USER_ONLY`	Send PCS-user information only, with no other facility request. Only for VN6, within `ACU_FACILITY_RQ`.

8.3.14 Action Code Values

These values specify the action code in ACU_FACILITY_IN, ACU_SET_MODE_CO, ACU_SET_MODE_RQ, ACU_TEST_CO, and ACU_TEST_RQ messages.
These values are defined in isdnacu.h. Action Code Description ACU_RQ_ACTIVATE Activate or register action ACU_RQ_CLEAR Deactivate or clear action ACU_RQ_ENQUIRY Enquiry action ACU_IN_TX Transmission ACU_CO_ACK Acknowledgement ACU_CO_REJ Reject

Action Code	Description
`ACU_RQ_ACTIVATE`	Activate or register action
`ACU_RQ_CLEAR`	Deactivate or clear action
`ACU_RQ_ENQUIRY`	Enquiry action
`ACU_IN_TX`	Transmission
`ACU_CO_ACK`	Acknowledgement
`ACU_CO_REJ`	Reject

8.3.15 Mode Code Values

These values specify the mode code in the acu_set_mode_code macro in ACU_SET_MODE_RQ messages.
These values are defined in isdnacu.h. Code Description ACU_MODE_NA_OUT_OF_ORDER Allow/forbid calls on NAI given by R_msg_nai. ACU_MODE_CALL_OUT_OF_ORDER Allow/forbid calls on NAI/CONN_ID given by R_msg_nai/R_msg_conn_id. ACU_MODE_CHANI_OUT_OF_ORDER Allow/forbid usage of the B channel given by Acu_set_mode_data_chani. ACU_MODE_ALL_NA_OUT_OF_ORDER Allow/forbid calls on all NAIs.

Code	Description
`ACU_MODE_NA_OUT_OF_ORDER`	Allow/forbid calls on NAI given by `R_msg_nai`.
`ACU_MODE_CALL_OUT_OF_ORDER`	Allow/forbid calls on NAI/CONN_ID given by `R_msg_nai`/`R_msg_conn_id`.
`ACU_MODE_CHANI_OUT_OF_ORDER`	Allow/forbid usage of the B channel given by `Acu_set_mode_data_chani`.
`ACU_MODE_ALL_NA_OUT_OF_ORDER`	Allow/forbid calls on all NAIs.

8.3.16 Error Cause Values

These values specify the error code in the acu_err_in_cause macro in ACU_ERR_IN messages.
These values are defined in isdnacu.h. Cause Code Description ACUER_PRIMITIVE_CODE Unknown primitive code ACUER_PARAM_VAL Invalid parameter ACUER_MANDATORY_PARAM_MISSING Mandatory parameter missing ACUER_PARAM_TYPE Incorrect parameter type ACUER_PARAM_LGTH Incorrect parameter length ACUER_UNEXPECTED_PRIMITIVE Unexpected primitive ACUER_PRIMITIVE_NOT_IMPLEMENTED SSDU primitive not implemented ACUER_NO_TIMER_AVAILABLE No more space to allocate new timer cells ACUER_CONGESTION Resource congestion

Cause Code	Description
`ACUER_PRIMITIVE_CODE`	Unknown primitive code
`ACUER_PARAM_VAL`	Invalid parameter
`ACUER_MANDATORY_PARAM_MISSING`	Mandatory parameter missing
`ACUER_PARAM_TYPE`	Incorrect parameter type
`ACUER_PARAM_LGTH`	Incorrect parameter length
`ACUER_UNEXPECTED_PRIMITIVE`	Unexpected primitive
`ACUER_PRIMITIVE_NOT_IMPLEMENTED`	SSDU primitive not implemented
`ACUER_NO_TIMER_AVAILABLE`	No more space to allocate new timer cells
`ACUER_CONGESTION`	Resource congestion

8.3.17 Progress Description Values

These values specify the progress description in ACU_ALERT_IN, ACU_ALERT_RQ, ACU_CALL_PROC_IN, ACU_CALL_PROC_RQ, ACU_CLEAR_IN, ACU_CONN_IN, ACU_CONN_RQ, ACU_PROGRESS_IN, ACU_PROGRESS_RQ, and ACU_SETUP_REPORT_IN messages.
These values are defined in isdnval.h. Progress Description Description NO_PROGRESS_DESCR No progress information to be stored. PROGRESS_DESCR_NON_END_TO_ END_ISDN Call is not end-to-end ISDN; further call progress information may be available. PROGRESS_DESCR_CALL_RETURNED_ISDN Call has returned to the ISDN. PROGRESS_DESCR_IN_BAND_NOW In-band information or appropriate pattern now available.

Progress Description	Description
`NO_PROGRESS_DESCR`	No progress information to be stored.
`PROGRESS_DESCR_NON_END_TO_ END_ISDN`	Call is not end-to-end ISDN; further call progress information may be available.
`PROGRESS_DESCR_CALL_RETURNED_ISDN`	Call has returned to the ISDN.
`PROGRESS_DESCR_IN_BAND_NOW`	In-band information or appropriate pattern now available.

8.3.18 Charging Type Values

These values specify the charging type in ACU_CLEAR_CO, ACU_CLEAR_IN, ACU_CLEAR_RQ, ACU_CLEAR_RS, ACU_CONN_CO, ACU_CONN_RS, ACU_INFORMATION_IN, and ACU_INFORMATION_RQ messages.
These values are defined in isdnacu.h. Charging Type Description ACUCHARG_TYPE_FREE_OF_CHARGE Free of charge (N/A in VN6/FRANCE) ACUCHARG_TYPE_CHARGE_ON_DURATION Charge on duration (N/A in VN6/FRANCE) ACUCHARG_TYPE_CHARGE_ON_ANSWER Charge on answer (N/A in VN6/FRANCE) ACUCHARG_TYPE_CHARGE_INCREMENT Charge increment (N/A in VN6/FRANCE) ACUCHARG_TYPE_SUB_TOTAL_CHARGE Sub-total charge ACUCHARG_TYPE_TOTAL_CHARGE Total charge

Charging Type	Description
`ACUCHARG_TYPE_FREE_OF_CHARGE`	Free of charge (N/A in VN6/FRANCE)
`ACUCHARG_TYPE_CHARGE_ON_DURATION`	Charge on duration (N/A in VN6/FRANCE)
`ACUCHARG_TYPE_CHARGE_ON_ANSWER`	Charge on answer (N/A in VN6/FRANCE)
`ACUCHARG_TYPE_CHARGE_INCREMENT`	Charge increment (N/A in VN6/FRANCE)
`ACUCHARG_TYPE_SUB_TOTAL_CHARGE`	Sub-total charge
`ACUCHARG_TYPE_TOTAL_CHARGE`	Total charge

8.3.19 Endpoint ID Values

These values are defined in isdnacu.h. Endpoint ID Description ACU_ACTION_NO_ENDPOINT_ID Don't send any Endpoint Id (ACU_CONN_RQ) ACU_ACTION_SND_USID SPID was OK, send the Endpoint Id info ACU_ACTION_NO_SPID_NEGOTIATION SPID negotiation is not supported ACU_ACTION_INVALID_SPID The received SPID is wrong ACU_ACTION_PROMPT_INFO Need a SPID from the terminal ACU_INTERPRETER_0 Terminal is selected if it is assigned the indicated TID and USID value ACU_INTERPRETER_1 Terminal is selected if it is NOT assigned the indicated TID but is assigned the indicated USID value

Endpoint ID	Description
`ACU_ACTION_NO_ENDPOINT_ID`	Don't send any Endpoint Id (`ACU_CONN_RQ`)
`ACU_ACTION_SND_USID`	SPID was OK, send the Endpoint Id info
`ACU_ACTION_NO_SPID_NEGOTIATION`	SPID negotiation is not supported
`ACU_ACTION_INVALID_SPID`	The received SPID is wrong
`ACU_ACTION_PROMPT_INFO`	Need a SPID from the terminal
`ACU_INTERPRETER_0`	Terminal is selected if it is assigned the indicated TID and USID value
`ACU_INTERPRETER_1`	Terminal is selected if it is NOT assigned the indicated TID but is assigned the indicated USID value

8.4 LAPD Primitives

The following is a summary of supported LAPD primitives: Message Type Description DL_DA_IN Indicates that a packet of "acknowledged" data has been received by the trunk from the remote party. DL_DA_RQ This message is sent by the application to the AG ISDN protocol stack to request the stack to transmit a packet of "acknowledged" data. DL_EST_CO This message indicates that equipment on the remote side of the ISDN trunk has acknowledged a SABME message sent by the ISDN protocol stack, and has sent back a UA message indicating that the data link is established. DL_EST_IN This message indicates that a SABME message has been received by the AG ISDN protocol stack. The stack automatically acknowledges the message by sending back a UA message, and establishes the data link. DL_EST_RQ This message is sent by the application to the AG ISDN protocol stack to request the stack to establish a data link. The stack transmits a SABME message over the trunk. DL_REL_IN If the AG ISDN software is in the IDLE state, this message indicates that an establishment request sent by the AG ISDN protocol stack was not successfully answered. If the software is in the DATA_LINK_ESTABLISHED state, this message indicates that the data link has been broken. DL_U_DA_IN This message indicates that a packet of "unacknowledged" data has been received by the trunk from the remote party. DL_U_DA_RQ This message is sent by the application to the AG ISDN protocol stack to request the stack to transmit a packet of "unacknowledged" data.

Message Type	Description
`DL_DA_IN`	Indicates that a packet of "acknowledged" data has been received by the trunk from the remote party.
`DL_DA_RQ`	This message is sent by the application to the AG ISDN protocol stack to request the stack to transmit a packet of "acknowledged" data.
`DL_EST_CO`	This message indicates that equipment on the remote side of the ISDN trunk has acknowledged a SABME message sent by the ISDN protocol stack, and has sent back a UA message indicating that the data link is established.
`DL_EST_IN`	This message indicates that a SABME message has been received by the AG ISDN protocol stack. The stack automatically acknowledges the message by sending back a UA message, and establishes the data link.
`DL_EST_RQ`	This message is sent by the application to the AG ISDN protocol stack to request the stack to establish a data link. The stack transmits a SABME message over the trunk.
`DL_REL_IN`	If the AG ISDN software is in the IDLE state, this message indicates that an establishment request sent by the AG ISDN protocol stack was not successfully answered. If the software is in the `DATA_LINK_ESTABLISHED` state, this message indicates that the data link has been broken.
`DL_U_DA_IN`	This message indicates that a packet of "unacknowledged" data has been received by the trunk from the remote party.
`DL_U_DA_RQ`	This message is sent by the application to the AG ISDN protocol stack to request the stack to transmit a packet of "unacknowledged" data.

(Page 42 of 42 in this chapter)

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Macro	Description	Q.931 IE	4 E S S	E 1 0	D M S 1 0 0
`acu_mns_service_action_type`	Action type (set to `I_MAINTENANCE`).	Change Status	x	x	x
`acu_mns_service_b_chan`	B channel number (only used if `acu_mns_service_pref` = `I_PREF_B_CHANNEL`)	Channel id	x	x	x
`acu_mns_service_error`	Not used.	(Not used.)
`acu_mns_service_int_id`	Interface id (NAI).	Channel id	x	x	x
`acu_mns_service_pref`	Service preference (`I_PREF_INTERFACE` or `I_PREF_B_CHANNEL`).	Channel id	x	x	x
`acu_mns_service_status`	New status (`I_D_STATE_IS`, `I_D_STATE_OOS`, `I_B_CHAN_IN_SERVICE`, or `I_B_CHAN_OUT_OF_ SERVICE`).	Change Status	x	x	x