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This feature module describes the Voice over IP Q.SIG network transparency feature for the Cisco AS5300 universal access server. It includes information on the benefits of the new feature, supported platforms, and related documents.
This document includes the following sections:
Integration of Q.SIG with the Cisco AS5300 universal access server enables Cisco voice switching services to connect private branch exchanges (PBXs), key systems (KTs), and central office switches (COs) that communicate by using the Q.SIG protocol.
Q.SIG on the AS5300 allows the user to place Q.SIG calls into and receive Q.SIG calls from Cisco Voice-over-IP (VoIP) networks. The Cisco packet network appears to PBXs as a large, distributed transit PBX that can establish calls to any destination served by a Cisco voice node. The switched voice connections are established and torn down in response to Q.SIG control messages that come over an ISDN PRI D channel. The Q.SIG message is passed transparently across the IP network and the message appears to the attached PINXs as a transit network. The PINXs are responsible for processing and provisioning the attached services.
Q.SIG voice signaling on the Cisco AS5300 provides the following benefits:
The following restrictions and limitations apply to the Cisco AS5300 Q.SIG implementation:
No new or modified standards are supported by this feature.
No new or modified MIBs are supported by this feature.
For descriptions of supported MIBs and how to use MIBs, see the Cisco MIB web site on CCO at http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.
No new or modified RFCs are supported by this feature.
The following configuration tasks should be completed before configuring this feature:
Figure 1 shows an example of a Q.SIG signaling configuration. In this example, the Cisco AS5300 acts as either a master to a slave PBX or as a slave to a master PBX.
To configure Q.SIG signaling support on the Cisco AS5300, complete the following steps, beginning in global configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| Router(config)# isdn switch-type primary-qsig | Configure the ISDN switch-type to support Q.SIG signaling. Note You can configure the ISDN switch type using either this global command or the same command in interface configuration mode, depending on your configuration. (See Step 5.) If you configure the global isdn-switch-type command for Q.SIG support, you do not need to configure the interface isdn-switch-type command for Q.SIG. Note If the PBX in your configuration is an NEC PBX, and you are using Fusion Call Control Signaling (FCCS), proceed to the "Fusion Call Control Signaling (NEC Fusion)" section. | ||
| Router(config)# controller {T1 | E1}controller number | Enter interface configuration mode. | ||
| Router(config-controller)# pri-group |
You can configure the PRI group to include all available timeslots, or you can configure a select group of timeslots for the PRI group. For example, if only timeslots 1 to 10 are in the PRI group, enter pri-group timeslot 1-10. If the PRI group includes all channels available for T1 (channels 1 to 24), enter pri-group timeslot 1-24. If the PRI group includes all channels available for E1 (channels 1 to 31), enter pri-group timeslot 1-31. | ||
| Router(config-controller)# exit | Exit controller configuration mode. | ||
| Router(config)# interface serial 1:x | Enter interface configuration mode for the ISDN PRI interface. For T1, enter serial 1:23. For E1, enter serial 1:15. | ||
| Router(config-if)# isdn switch-type primary-qsig | If you did not configure the global ISDN switch type for Q.SIG support in Step 1, configure the interface ISDN switch type to support Q.SIG signaling. The conditions that apply to this command in global configuration mode also apply to this command in interface configuration mode. Note This interface command overrides the global isdn switch-type command setting for this interface. | ||
| Router(config-if)# isdn protocol-emulate { user | network } | Configure the ISDN interface to serve as either the primary Q.SIG slave or the primary Q.SIG master. For this command, user specifies slave and network specifies master. If the PINX is the primary Q.SIG master, configure the Cisco AS5300 to serve as the primary Q.SIG slave. If the PINX is the primary Q.SIG slave, configure the Cisco AS5300 to serve as the primary Q.SIG master. For more information about the different options available with this command, see "ISDN Switch Type Command Options". | ||
| Router(config-if)# isdn overlap-receiving value | Note This command is not mandatory; you can leave the default as enbloc. | ||
| Router(config-if)# isdn incoming-voice modem | Route incoming voice calls to the modem and treat them as analog data. | ||
| Router(config-if)# isdn network-failure-cause [value] | Note All cause codes except for Normal Call Clearing (16), User Busy (17), No User Responding (18) and No Answer from User (19) will be changed to the specified cause code. | ||
| Router(config-if)# isdn bchan-number-order {ascending | descending} | (Optional) Configure the ISDN Primary Rate Interface (PRI) interface to make the outgoing call selection in ascending or descending order. The default is descending order, in which the first call from the Cisco AS5300 uses channel 23 (T1) or channel 31 (E1). The second call then uses channel 22 (T1) or channel 30 (E1), and so on in descending order. If you select ascending order and the PRI group starts with 1, the first call uses channel 1, the second call uses channel 2, and so on in ascending order. If the PRI group starts with a different timeslot, the ascending order starts with the lowest timeslot. | ||
| Router(config-if)# exit | Exit interface configuration mode. |
As shown in the preceding section, you have a choice of configuring the isdn-switch-type command to support Q.SIG at either the global configuration level or the interface configuration level. For example, if you have a Q.SIG connection on one line as well as on the PRI port, you can configure the ISDN switch type in one of the following combinations:
If you have an NEC PBX in your network and you are running Fusion Call Control Signaling (FCCS), you will need to configure this device appropriately. FCCS, also known as NEC Fusion, allows individual nodes anywhere within a network to operate as if they were part of a single integrated PBX system. The database storage, share, and access routine of NEC Fusion allow real-time access from any node to any other, allowing individual nodes to "learn" about the entire network configuration. This capability allows network-wide feature, functional, operational, and administration transparency.
Figure 1 shows an example of a Q.SIG signaling configuration using an NEC PBX.
To configure NEC Fusion signaling support on the Cisco AS5300, complete the following steps, beginning in global configuration mode:
| Step | Command | Purpose | ||
|---|---|---|---|---|
| Router(config)# controller T1 controller number | Enter controller configuration mode. NEC Fusion does not support fractional T1/E1; all 24 channels must be available. If they are not available, the configuration request will fail. | ||
| Router(config-controller)# pri-group nec-fusion { pbx-ip-address | pbx-ip-host-name } pbx-port number | Configure the controller to communicate with an NEC PBX using NEC Fusion. The range for the PBX port is 49152 to 65535. If you don't specify a port number, the default value of 55000 will be used. If this value is already in use, the next greater value will be used. | ||
| Router(config-controller)# exit | Exit controller configuration mode. |
After you complete the configuration for the AS5300, perform the following steps to verify that you configured Q.SIG properly:
Step 1 Enter the show isdn status command to view the ISDN layer information. This output shows that you have correctly designated the global ISDN switch type to be primary-Q.SIG.
Router# show isdn status
Global ISDN Switchtype = primary-qsig
ISDN Serial1:23 interface
dsl 0, interface ISDN Switchtype = primary-qsig
**** Slave side configuration ****
Layer 1 Status:
DEACTIVATED
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
Layer 3 Status:
0 Active Layer 3 Call(s)
Activated dsl 0 CCBs = 0
The Free Channel Mask: 0x7FFFFF
The following configuration example configures interface serial 1:23 for Q.SIG PRI and to act as the Q.SIG slave. The example includes the other commands necessary for configuration (see Figure 1).
! version 12.0 service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname as5300A ! ip subnet-zero ! isdn switch-type primary-qsig ! controller T1 0 shutdown ! controller T1 1 framing esf clock source line primary linecode b8zs pri-group timeslots 1-24 ! controller T1 2 shutdown ! controller T1 3 shutdown ! ! voice-port 1:D ! ! dial-peer voice 3001 pots destination-pattern 3001 port 1:D ! dial-peer voice 4001 pots incoming called-number 4001 direct-inward dial ! dial-peer voice 4002 voip destination-pattern 4001 session target ipv4:1.14.82.14 ! ! interface Ethernet0 ip address 1.14.82.13 255.255.0.0 no ip directed-broadcast ! interface 1:23 no ip address no ip directed broadcast isdn switch-type primary-qsig isdn protocol-emulate user isdn incoming-voice modem ! interface FastEthernet0 no ip address no ip directed-broadcast shutdown ! ip default-gateway 1.14.0.1 ip classless ! line con 0 transport input none line aux 0 line vty 0 4 login ! end ===================================================== ! version 12.0 service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname as5300B ! ip subnet-zero ! isdn switch-type primary-qsig ! ! controller T1 0 shutdown ! controller T1 1 framing esf clock source line primary linecode b8zs pri-group timeslots 1-24 ! controller T1 2 shutdown ! controller T1 3 shutdown ! ! voice-port 1:D ! ! dial-peer voice 3001 pots incoming called-number 3001 direct-inward-dial ! dial-peer voice 3002 voip destination-pattern 3001 session target ipv4:1.14.82.13 ! dial-peer voice 4001 pots destination-pattern 4001 port 1:D ! interface Ethernet0 ip address 1.14.82.14 255.255.0.0 no ip directed-broadcast ! interface Serial1:23 no ip address no ip directed-broadcast isdn switch-type primary-qsig isdn protocol-emulate network isdn incoming-voice modem ! interface FastEthernet0 no ip address no ip directed-broadcast shutdown ! ip default-gateway 1.14.0.1 ip classless ! line con 0 transport input none line aux 0 line vty 0 4 login ! end
The following commands are used to configure the Q.SIG PRI signaling feature:
To configure the Cisco AS5300 PRI interface to serve as either the primary Q.SIG slave or the primary Q.SIG master, use the isdn protocol-emulate interface command. To disable Q.SIG signaling, use the no form of this command.
isdn protocol-emulate { user | network }
user | Slave. |
network | Master. |
The switch type defaults to user.
Interface configuration mode.
This command first appeared in Cisco IOS Release 12.0(3)XG.
The following example configures T1 interface 23 on the Cisco AS5300 to act as the Q.SIG master:
interface serial 1:23 isdn protocol-emulate network
| Command | Description |
|---|---|
isdn switch type | Configures the Cisco AS5300 PRI interface to support Q.SIG signaling. |
pri-group nec-fusion | Configures your NEC PBX to use FCCS instead of Q.SIG signaling. |
show cdapi | Displays information about the CDAPI. |
show rawmsg | Displays information about any memory leaks. |
To configure the Cisco AS5300 PRI interface to support Q.SIG signaling, use the isdn switch-type global or interface command. To disable Q.SIG signaling, use the no form of this command.
isdn switch-type primary-qsig
switch-type | Service provider switch type. Specifies the Cisco AS5300 or the interface to support Q.SIG signaling. |
The switch type defaults to none, which disables the switch on the ISDN interface.
Global configuration mode or interface configuration mode.
| Release | Modification |
|---|---|
9.21 | Introduced as a global command. |
11.3 T | Introduced as an interface command. |
You have the choice of configuring the isdn-switch-type command to support Q.SIG in either global configuration mode or interface configuration mode. When entered in global configuration mode, the setting applies to the entire Cisco AS5300. When entered in interface configuration mode, the setting applies only to the T1/E1 interface specified. The interface configuration mode setting overrides the global configuration setting.
For example, if you have a Q.SIG connection on one line as well as on the PRI port, you can configure the ISDN switch type in one of the following combinations:
The following example configures the Cisco AS5300 to support Q.SIG signaling:
isdn switch-type primary-qsig
The following example configures T1 interface 23 on the Cisco AS5300 to support Q.SIG signaling:
interface serial 1:23 isdn switch-type primary-qsig
| Command | Description |
|---|---|
isdn protocol-emulate | Configures the Cisco AS5300 PRI interface to serve as either the primary Q.SIG slave or the primary Q.SIG master. |
pri-group nec-fusion | Configures your NEC PBX to use FCCS instead of Q.SIG signaling. |
show cdapi | Displays information about the CDAPI. |
show rawmsg | Displays information about any memory leaks. |
To configure your NEC PBX to support Fusion Call Control Signaling (FCCS), use the pri-group nec-fusion controller command. To disable FCCS, use the no form of this command.
pri-group nec-fusion { pbx-ip-address | pbx-ip-host-name } pbx-port number
pbx-ip-address | The IP address of the NEC PBX. |
pbx-ip-host-name | The host name of the NEC PBX. |
number | Choose a port number for the PBX. The range for the PBX port is 49152 to 65535. If you don't specify a port number, the default value of 55000 will be used. If this value is already in use, the next greater value will be used. |
55000
Controller configuration mode.
This command first appeared in Cisco IOS Release 12.0(7)T.
This command is used only if the PBX in your configuration is an NEC PBX, and if you are configuring it to run FCCS and not Q.SIG signaling.
The following example shows how to configure this NEC PBX to use FCCS:
pri-group nec-fusion 172.31.255.255 pbx-port 60000
| Command | Description |
|---|---|
isdn protocol-emulate | Configures the Cisco AS5300 PRI interface to serve as either the primary Q.SIG slave or the primary Q.SIG master. |
isdn switch type | Configures the Cisco AS5300 PRI interface to support Q.SIG signaling. |
show cdapi | Displays information about the CDAPI. |
show rawmsg | Displays information about any memory leaks. |
To display the Call Distributor Application Programming Interface (CDAPI), use the show cdapi command.
show cdapi
cdapi | The internal API that provides an interface between signaling stacks and applications. |
Privileged EXEC mode.
This command first appeared in Cisco IOS Release 12.0(7)T.
The following is output for the show cdapi command:
Router# sh cdapi
Registered CDAPI Applications/Stacks
====================================
Application TSP CDAPI Application
Application Type(s) Voice Facility Signaling
Application Level Tunnel
Application Mode Enbloc
Signaling Stack ISDN
Interface Se023
Signaling Stack ISDN
Interface Se123
Active CDAPI Calls
==================
Interface Se023
No active calls.
Interface Se123
Call ID = 0x39, Call Type = VOICE, Application = TSP CDAPI Application
CDAPI Message Buffers
=====================
Used Msg Buffers 0, Free Msg Buffers 1600
Used Raw Buffers 1, Free Raw Buffers 799
Used Large-Raw Buffers 0, Free Large-Raw Buffers 80
scarlatti1#
| Command | Description |
|---|---|
isdn protocol-emulate | Configures the Cisco AS5300 PRI interface to serve as either the primary Q.SIG slave or the primary Q.SIG master. |
isdn switch type | Configures the Cisco AS5300 PRI interface to support Q.SIG signaling. |
pri-group nec-fusion | Configures your NEC PBX to use FCCS instead of Q.SIG signaling. |
show rawmsg | Displays information about any memory leaks. |
To show the raw messages owned by the required component, use the show rawmsg interface command.
show rawmsg { all | tsp | vtsp | ccapi | h323 }
all | All selections below. |
tsp | Telephony Service Provider subsystem. |
vtsp | Voice Telephony Service Provider subsystem. |
ccapi | API (Application Programming Interface) used to coordinate interaction between application and call legs (telephony or IP). |
h323 | H.323 subsystem. |
Privileged EXEC mode.
This command first appeared in Cisco IOS Release 12.0(7)T.
The number displayed for show rawmsg all should be zero, to indicate there are no memory leaks.
The following example shows how to display memory leaks from the telephony service provider:
show rawmsg tsp
| Command | Description |
|---|---|
isdn protocol-emulate | Configures the Cisco AS5300 PRI interface to serve as either the primary Q.SIG slave or the primary Q.SIG master. |
isdn switch type | Configures the Cisco AS5300 PRI interface to support Q.SIG signaling. |
pri-group nec-fusion | Configures your NEC PBX to use FCCS instead of Q.SIG signaling. |
show cdapi | Displays information about the CDAPI. |
This section documents new debug commands for Q.SIG on the Cisco AS5300 access server. All other commands used with this feature are documented in the Cisco IOS Release 12.0 command references.
The debug cdapi command is used to display information about the CDAPI (Call Distributor Application Programming Interface).
debug cdapi {detail | events}
detail | Shows when applications register or unregister with CDAPI, when calls are added or deleted from the CDAPI routing table, and when CDAPI messages are created and freed. It is useful for determining if messages are being lost (or not freed) as well as the size of the raw messages passed between CDAPI and applications, so that you can check that the correct number of bytes is being passed. |
events | Shows the events passing between CDAPI and an application or signaling stack. This debug is useful for determining if certain ISDN messages are not being received by an application or if calls are not being directed to an application. |
Debugging for the CDAPI is disabled.
| Release | Modification |
|---|---|
12.0(7)T | This command was introduced. |
The following example shows output for the debug cdapi detail command.
003511 ISDN Se123 RX <- SETUP pd = 8 callref = 0x77C4 003511 Bearer Capability i = 0x9090A2 003511 Channel ID i = 0xA18381 003511 Facility i = 0x9FAA068001008201008B0100A1180202274A020100800F534341524C415454492D3530303733 003511 Progress Ind i = 0x8183 - Origination address is non-ISDN 003511 Calling Party Number i = 0xA1, '50073' 003511 Called Party Number i = 0xC1, '3450070' 003511 CDAPI cdapi_create_msg() CDAPI Pool Count 1599, Raw Length = 72 003511 CDAPI cdapi_create_msg() Copied raw message of length 72, Raw msg Pool Count 799, Msg = 0x6146AB1C, Raw = 0x6146AB20 003511 CDAPI Se123 cdapi_add_entry_callRoutingTbl() - 003511 Added entry for call 0x23 for application TSP CDAPI Application 003511 CDAPI cdapi_free_msg() Raw Length = 72, freeRaw = 0, Raw Msg = 0x6146AB1C 003511 CDAPI cdapi_free_msg() CDAPI Pool Count 1600 003511 CDAPI cdapi_create_msg() CDAPI Pool Count 1599, Raw Length = 0 003511 CDAPI-ISDN Se123 cdapi_process_connect_resp() Received cause (0) 003511 from application for call 0x23 003511 CDAPI cdapi_free_msg() Raw Length = 0, freeRaw = 1, Raw Msg = 0x0 003511 CDAPI cdapi_free_msg() CDAPI Pool Count 1600 003511 CDAPI cdapi_create_raw_msg() Created raw message buffer, Length = 72, Pool count 798 Raw Msg = 0x6146AC54, Buff = 0x6146AC58 003511 CDAPI cdapi_free_raw_msg_buf() Buff = 0x6146AC58, Length = 72 003511 CDAPI cdapi_free_raw_msg() Raw Msg = 0x6146AC54, Length = 72 003511 CDAPI cdapi_free_raw_msg() Freed raw message buffer, Length = 72, Pool count 799 003511 CDAPI cdapi_create_msg() CDAPI Pool Count 1599, Raw Length = 0 003511 CDAPI-ISDN Se123 cdapi_process_info_req() - Called process_xxx_simple 003511 for call 0x23, bchan 0, call type VOICE 003511 CDAPI cdapi_free_msg() Raw Length = 0, freeRaw = 1, Raw Msg = 0x0 003511 CDAPI cdapi_free_msg() CDAPI Pool Count 1600 003511 ISDN Se123 TX -> CALL_PROC pd = 8 callref = 0xF7C4 003511 Channel ID i = 0xA98381
The following example shows output for the debug cdapi events command.
003909 ISDN Se123 RX <- SETUP pd = 8 callref = 0x06BB 003909 Bearer Capability i = 0x9090A2 003909 Channel ID i = 0xA18381 003909 Facility i = 0x9FAA068001008201008B0100A1180202274C020100800F534341524C415454492D3530303733 003909 Progress Ind i = 0x8183 - Origination address is non-ISDN 003909 Calling Party Number i = 0xA1, '50073' 003909 Called Party Number i = 0xC1, '3450070' 003909 CDAPI Se123 TX -> CDAPI_MSG_CONNECT_IND to TSP CDAPI Application call = 0x24 003909 From Appl/Stack = ISDN 003909 Call Type = VOICE 003909 B Channel = 0 003909 Cause = 0 003909 Calling Party Number = 50073 003909 Called Party Number = 3450070 003909 CDAPI Se123 TX -> CDAPI_MSG_CONNECT_RESP to ISDN call = 0x24 003909 From Appl/Stack = TSP CDAPI Application 003909 Call Type = VOICE 003909 B Channel = 0 003909 Cause = 0 003909 CDAPI-ISDN Se123 RX <- CDAPI_MSG_CONNECT_RESP from TSP CDAPI Application call = 0x24 003909 Call Type = VOICE 003909 B Channel = 0 003909 Cause = 0 003909 CDAPI Se123 TX -> CDAPI_MSG_SUBTYPE_CALL_PROC_REQ to ISDN call = 0x24 003909 From Appl/Stack = TSP CDAPI Application 003909 Call Type = VOICE 003909 B Channel = 0 003909 Cause = 0 003909 CDAPI-ISDN Se123 RX <- CDAPI_MSG_SUBTYPE_CALL_PROC_REQ from TSP CDAPI Application call = 0x24 003909 Call Type = VOICE 003909 B Channel = 0 003909 Cause = 0 003909 ISDN Se123 TX -> CALL_PROC pd = 8 callref = 0x86BB 003909 Channel ID i = 0xA98381
| Command | Description |
|---|---|
debug cdapi | Displays information about the call distributor application programming interface |
debug voip rawmsg | Displays the raw message owner, length, and pointer. |
The debug tsp command is used to display information about the telephony service provider (TSP). Use the no form of this command to disable debugging output.
debug tsp {all | call | error | port}
all | Enables all TSP debugging (except statistics). |
call | Enables call debugging. |
error | Enables error debugging. |
port | Enables port debugging. |
Debugging for the TSP is disabled.
| Release | Modification |
|---|---|
12.0(7)T | This command was introduced. |
The following example shows output for the debug tsp all command.
01:04:12:CDAPI TSP RX ===> callId=(32 ), Msg=(CDAPI_MSG_CONNECT_IND,1 ) Sub=(CDAPI_MSG_SUBTYPE_NULL,0 )cdapi_tsp_connect_ind 01:04:12:TSP CDAPI:cdapi_free_msg returns 1 01:04:13:tsp_process_event:[0:D, 0.1 , 3] tsp_cdapi_setup_ack tsp_alert 01:04:13:tsp_process_event:[0:D, 0.1 , 5] tsp_alert_ind 01:04:13:tsp_process_event:[0:D, 0.1 , 10] 01:04:14:tsp_process_event:[0:D, 0.1 , 10] 01:04:17:CDAPI TSP RX ===> callId=(32 ), Msg=(CDAPI_MSG_DISCONNECT_IND,7 ) Sub=(CDAPI_MSG_SUBTYPE_NULL,0 )cdapi_tsp_disc_ind 01:04:17:TSP CDAPI:cdapi_free_msg returns 1 01:04:17:tsp_process_event:[0:D, 0.1 , 27] cdapi_tsp_release_indtsp_disconnet_tdm 01:04:17:tsp_process_event:[0:D, 0.4 , 7] cdapi_tsp_release_comp
| Command | Description |
|---|---|
debug tsp | Displays information about the telephony service provider. |
debug voip rawmsg | Displays the raw message owner, length, and pointer. |
The debug voip rawmsg command is used to display the raw message owner, length, and pointer. Use the no form of this command to disable debugging output.
debug voip rawmsg [ detail ]
detail | This will additionally print the contents of the raw message in hex. |
Debugging for the raw messages is disabled.
| Release | Modification |
|---|---|
12.0(7)T | This command was introduced. |
The following example shows output for the debug voip rawmsg command.
as5300# debug voip rawmsg 00:57:40:Raw Message owner is 2, length is 69, ptr is 60FE4F5C, type is 0, protocol id is 0 00:57:40:Raw Message owner is 5, length is 69, ptr is 60FE4F5C, type is 0, protocol id is 0 0
The following example shows output for the debug voip rawmsg detail command.
as5300# debug voip rawmsg detail 00:57:40:Raw Message owner is 2, length is 69, ptr is 60FE4F5C, type is 0, protocol id is 0 00:57:40:Raw Message is :04 03 80 90 A2 18 03 A9 83 97 1C 27 9F AA 06 80 01 00 82 01 00 92 01 11 8B 01 00 A1 16 02 02 01 00 06 04 2B 0C 09 00 80 0A 4D 4F 4E 49 43 41 20 33 32 33 1E 02 81 83 6C 05 09 80 33 32 33 70 04 89 38 30 30 A1 00:57:40:Raw Message owner is 5, length is 69, ptr is 60FE4F5C, type is 0, protocol id is 0 00:57:40:Raw Message is :04 03 80 90 A2 18 03 A9 83 97 1C 27 9F AA 06 80 01 00 82 01 00 92 01 11 8B 01 00 A1 16 02 02 01 00 06 04 2B 0C 09 00 80 0A 4D 4F 4E 49 43 41 20 33 32 33 1E 02 81 83 6C 05 09 80 33 32 33 70 04 89 38 30 30 A1
| Command | Description |
|---|---|
debug cdapi | Displays information about the call distributor application programming interface |
debug tsp | Displays information about the telephony service provider. |
APDU---Application protocol data unit. A sequence of data elements exchanged between peer application layer entities.
CAS---Channel associated signaling.
CCS---Common channel signaling. Signaling system used in telephone networks that separates signaling information from user data. A specified channel is exclusively designated to carry signaling information for all other channels in the system.
E1---Wide-area digital transmission scheme used predominantly in Europe that carries data at a rate of 2.048 Mbps. E1 lines can be leased for private use from common carriers.
Enbloc---Mode where all call establishment information is sent in the setup message (opposite of overlap mode, where additional messages are needed to establish the call).
GFP---General Functional Procedures. Standard defined by ECMA-165.
H.323---Extension of ITU-T standard H.320 that enables videoconferencing over LANs and other packet-switched networks, as well as video over the Internet.
ISDN---Integrated Services Digital Network. Communication protocol offered by telephone companies that permits telephone networks to carry data, voice, and other source traffic.
Overlap---Mode where call control is waiting for possible additional call information from the preceding PINX, since it received acknowledgment that the subsequent PINX may receive additional call information.
PBX---Private branch exchange. Digital or analog telephone switchboard located on the subscriber premises and used to connect private and public telephone networks.
PINX---Private integrated services network exchange.
PRI---Primary Rate Interface. ISDN interface to primary rate access. Primate rate access consists of a single 64-Kbps D channel plus 23 (T1) or 30 (E1) channels for voice or data.
Q.SIG---Q Signaling. An inter-PBX signaling protocol for networking PBX supplementary services in a multi- or uni-vendor environment.
T1---Digital WAN carrier facility. T1 transmits DS-1-formatted data at 1.544 Mbps through the telephone-switching network using AMI or B8ZS coding. Compare with E1.
Transit PINX---A PINX that participates in the provision of a call-independent signaling connection but does not originate or terminate that connection.
VFC---Voice-over-IP feature card.
WAN---Wide-area network. Data communications network that serves users across a broad geographic area and often uses transmission devices provided by common carriers.
Posted: Fri Dec 10 19:10:47 PST 1999
Copyright 1989-1999©Cisco Systems Inc.