To configure channelized T1 timeslots with robbed bit signaling, use the cas-group controller configuration command. Use the no form of this command to disable robbed bit signaling for one or more timeslots.
cas-group channel timeslots range type signal
no cas-group channel timeslots range type signal
channel Specifies a single channel group number, which can be between 0 and 23.
timeslots range Specifies a range of timeslots, which are from 1 to 24. Timeslots can be specified by ranges or groups. For example, 1-24 or 1-15 and 17-24.
type signal Specifies a type of robbed bit signaling. Replace the signal variable with one of the following signal types. The keywords service , data , and voice are used for switched 56K configuration. These keywords are described at the end of this syntax description table.
- e&m-fgb [dtmf [dnis ]| [service {data | voice }]] | [service {data | voice }] | [mf [dnis ] | [service {data | voice }]]Specifies ear and mouth channel signaling with feature group B support, which includes the wink start protocol. Use the options dtmf [dnis ]to configure DTMF tone signaling with optional DNIS provisioning. Use the options mf [dnis ]to configure MF tone signaling with optional DNIS provisioning. Use the options service {data | voice }for switched 56K configurations. (See the end of this syntax description table for more information about these switched 56K keywords.)
- e&m-fgd [service {data | voice }]Specifies ear and mouth channel signaling with feature group D support, which includes the wink start protocol. Use the options service {data | voice } for switched 56K configurations. (See the end of this syntax description table for more information.)
- e&m-immediate-start [service {data | voice }]Specifies ear and mouth channel signaling with immediate start support. Use the options service {data | voice } for switched 56K configurations. (See the end of this syntax description table for more information.)
- fxs-ground-start [service {data | voice }]Specifies Foreign Exchange Station ground start signaling support. Use the options [service {data | voice }] for switched 56K configurations. (See the end of this syntax description table for more information.)
- fxs-loop-start [service {data | voice }] Specifies Foreign Exchange Station loopstart signaling support. Use the options service {data | voice }for switched 56K configurations. (See the end of this syntax description table for more information.)
type signal
- r1-modified ani-dnis Indicates R1 signaling will collect ani and dnis information.
- r1-modified dnisIndicates R1 signaling will collect only dnis information.
- sas-ground-start [service {data | voice }]Specifies Special Access Station ground start signaling support. Use the options service {data | voice } for switched 56K configurations. (See the end of this syntax description table for more information.)
- sas-loop-start [service {data | voice }]Specifies Special Access Station loopstart signaling support. Use the options service {data | voice } for switched 56K configurations.
- service (Optional) Specifies the type of services provided for scenarios involving switched 56K connections. Do not include this option in the cas-group command statement if you are not using the access server to provide switched 56K connections.
- data Enables switched 56K digital data services on the specified range of timeslots. The data is directly read from the timeslot or channel. Timeslots configured with this option will not accept analog modem calls.
- voice Enables analog modem services on the specified range of timeslots. The call is forwarded to the modems for demodulation. Timeslots configured with this option will not accept switched 56K digital calls.
For ISDN PRI, the cas-group command is disabled.
If the channelized T1 is not configured as a PRI, the default value for line signaling ise&m-fgb and the default value for tone signaling isDTMF .
The R1signalling default value is ani-dnis .
Controller configuration
| Release | Modification | 11.2 | This command was introduced. |
11.3 T | The following signaling options were added:
|
11.3 P | The R1 keyword was added. |
|---|
Use the cas-group command to configure T1 controllers with different types of robbed bit signaling , such as on-hook and off-hook for E&M feature group B (e&m-fgb ).
If you want to collect DNIS information on a T1 controller, you must manually configure it on the access server. DNIS collection is performed only for E&M-fgb. To collect DTMF DNIS for E&M-fgb under a controller T1 configuration, issue the cas-group 0 timeslots 1-24 type e&m-fgb dtmf dnis command. To collect MF DNIS for E&M-fgb, issue the cas-group 0 timeslots 1-24 type e&m-fgb mf dnis command.
The following example configures all 24 channels with ear and mouth robbed bit signaling with feature group B support:
router(config)# controller T1 0 router(config-controller)# cas-group 1 timeslots 1-24 type e&m-fgb router(config-controller)# %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 1 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 2 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 3 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 4 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 5 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 6 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 7 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 8 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 9 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 10 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 11 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 12 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 13 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 14 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 15 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 16 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 17 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 18 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 19 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 20 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 21 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 22 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 23 is up %DSX0-5-RBSLINEUP: RBS of controller 1 timeslot 24 is up
The following example configures the required signaling to support modem pooling and the digital number identification service (DNIS) over channelized T1 lines on a Cisco AS5300. The only supported signaling and tone types for modem pooling over CT1 RBS are E&M feature group B, DTMF tones, and MF tones. By configuring DNIS as part of the cas-group command, the system can collect DNIS digits for incoming calls, which can be redirected to specific modem pools setup for different customers or services. Additionally, you must be running MICA modems in the system and have at least 10% of your total modems in the default modem pool. Free modems are needed in the default pool to detect the incoming called number or DNIS before handing the call off to the appropriate modem pool. Therefore, two modems are actually needed to handle each incoming call.
Make sure that your switch provides inband address information for incoming analog calls before you enable this feature.
router# configure terminal Enter configuration commands, one per line. End with CNTL/Z. router(config)# controller t1 0 router(config-controller)# cas-group 0 timeslots 1-24 type e&m-fgb dtmf dnis router(config-controller)# exit router(config)# router(config)#modem-pool accounts1 router(config-modem-pool)# pool-range 30-50 router(config-modem-pool)# called-number 2000 max-conn 21 router(config-modem-pool)# exit router(config)#
The next example configures a Cisco AS5200 to accept switched 56K digital calls on both of its T1 controllers:
router(config)# controller T1 0 router(config-controller)# cas-group 1 timeslots 1-24 type e&m-fgb service data router(config-controller)# framing esf router(config-controller)# clock source line secondary router(config-controller)# linecode b8zs router(config-controller)# exit router(config)# controller T1 1 router(config-controller)# cas-group 1 timeslots 1-24 type e&m-fgb service data router(config-controller)# framing esf router(config-controller)# clock source line primary router(config-controller)# linecode b8zs router(config-controller)# exit router(config)# copy running-config startup-config
The next example configures switched 56K digital services and analog modem services on one controller. Each service is assigned its own range of timeslots. Switched 56K calls are assigned to timeslots 1 through 15. Analog modem calls are assigned to timeslots 16 through 24. However, you must use different channel group numbers in each cas-group command entry.
router(config)# controller T1 0 router(config-controller)# cas-group 0 timeslots 1-15 type e&m-fgb service data router(config-controller)# cas-group 1 timeslots 16-24 type e&m-fgb service voice router(config-controller)# framing esf router(config-controller)# clock source line secondary router(config-controller)# linecode b8zs router(config-controller)# exit
The following example would configure R1 Signaling on a Cisco AS5200 (T1 interface) and specify the collection of both ANIand DNIS information:
5200(config-controller)# cas-group 1 timeslots 1-24 type r1-modified ani-dnis
Printed for apswan@ctr.ap.nic.in on Wed Mar 5 22:32:57 PST 2003
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