To configure channel associated signaling on an E1 controller, use the cas-group controller configuration command. Use the no form of this command to disable channel associated 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. Replace the channel variable with a number between 0 and 30.
timeslots range Specifies a timeslot range, which can be from 1 to 31. You can specify a timeslot range (for example, 1-31), individual timeslots separated by commas (for example 1, 3, 5), or a combination of the two (for example 1-14, 15, 17-31). The 16th time slot is reserved for out-of-band signaling.
type signal Specifies the type of channel associated signaling. Configure the signal type that your central office uses. Replace the signal variable with one of the following signal types:
- e&m-fgb [dtmf [dnis ] | mf [dnis ]]Specifies ear and mouth channel signaling with feature group B support, which includes the wink start protocol. The optional signal tones are DTMF and MF with the option of provisioning DNIS.
- e&m-fgd Specifies ear and mouth channel signaling with feature group D support, which includes the wink start protocol.
- e&m-immediate-start Specifies ear and mouth channel signaling with immediate start support.
- fxs-ground-start Specifies Foreign Exchange Station ground start signaling support.
- fxs-loop-start Specifies Foreign Exchange Station loopstart signaling support.
- p7 Specifies the P7 switch type.
- sas-ground-start Specifies Special Access Station ground start signaling support.
- sas-loop-start Specifies Special Access Station loopstart signaling support.
The following descriptions are provided for the previous R1 and R2 syntax bullets:
r1-modified ani-dnis Indicates R1 signaling will collect ANI and DNIS information.
r1-modified dnisIndicates R1 signaling will collect only DNIS information.
r2-analog Specifies R2 ITU Q411 analog line signaling, which reflects the on/off switching of a tone in frequency-division multiplexing circuits (before
TDM circuits were created). The tone is used for line signaling.r2-digital Specifies R2 ITU Q421 digital line signaling, which is the most common signaling configuration. The A and B bits are used for line signaling.
r2-pulse Specifies R2 ITU supplement 7 pulse line signaling, which is a transmitted pulse that indicates a change in the line state.
dtmf Specifies the DTMF tone signaling.
r2-compelled [ani ]Specifies R2 compelled register signaling. You can also specify provisioning the ANI addr option.
r2-non-compelled [ani ]Specifies R2 noncompelled register signaling.
r2-semi-compelled [ani ]Specifies R2 semicompelled register signaling.
For ISDN PRI, the cas-group command is disabled.
If the channelized E1 is not configured as a PRI, the default value for line signaling ise&m-fgb and the default value for tone signaling isDTMF .
The R1 signaling default isani-dnis .
R2 signaling types have DNIS turned on by default.
Controller configuration
| Release | Modification | 11.2 P | This command was introduced. |
11.3 P | The R1 keyword was added. |
11.3 T | The R2 keyword was added. |
|---|
Use this command to configure support for incoming and outgoing call signals (such as on-hook and off-hook) on each E1 controller.
If you specify the timeslot range 1-31, the system software automatically uses the 16th timeslot to transmit the channel associated signaling.
The signaling you configure on the access server must match the signaling used by the central office. For example if the central office switch is forwarding R2 analog signaling to a Cisco AS5300, then the access server's E1 controller must also be configured for R2 analog signaling (r2-analog ).
All R2 signaling options have DNIS support turned on by default. If you enable the ani option, the collection of DNIS information is still performed. Specifying the ani option does not disable DNIS. DNIS is the number being called. ANI is the caller's number. For example, if you are configuring router A to call router B, then the DNIS number is router B, the ANI number is router A. ANI is very similar to Caller ID.
To customize the R2 signaling parameters, refer to the cas-customcontroller configuration command. When you enable the cas-group command, the cas-custom command is automatically setup to be polled for configuration information. However, unless you enable or turn on specific features with the cas-custom command, the cas-custom feature has an empty set of signaling parameters.
Only integrated MICA modems support E1 R2 signaling on access servers.
DNIS is automatically collected for modem pools and R2 tone signaling. You do not need to specify the collection of DNIS information with the cas-group command. However, if you are using non-R2 tone signaling, the system must be manually configured to collect DNIS information. For non-R2 cas signaling, DNIS collection is done only for E&M-fgb.
In most cases, you will configure the same channel associated signaling on each E1 controller. The following examples configure signaling and customized parameters on controller E1 2 using the cas-group and cas-custom controller configuration commands. The actual channel associated signaling is configured on the 16th timeslot, which is the reason why this timeslot does not come up in the following output.
router# configure terminal Enter configuration commands, one per line. End with CNTL/Z. router(config)# controller e1 2 router(config-controller)# cas-group 1 timeslots 1-31 type r2-digital r2-compelled ani router(config-controller)# %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 1 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 2 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 3 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 4 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 5 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 6 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 7 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 8 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 9 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 10 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 11 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 12 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 13 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 14 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 15 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 17 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 18 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 19 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 20 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 21 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 22 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 23 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 24 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 25 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 26 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 27 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 28 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 29 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 30 is up %DSX0-5-RBSLINEUP: RBS of controller 0 timeslot 31 is up
The following example shows all the supported E1 signaling types on a Cisco AS5300.
router(config-controller)# cas-group 1 timeslots 1-31 type ? e&m-fgb E & M Type II FGB e&m-fgd E & M Type II FGD e&m-immediate-start E & M Immediate Start fxs-ground-start FXS Ground Start fxs-loop-start FXS Loop Start p7 P7 Switch r2-analog R2 ITU Q411 r2-digital R2 ITU Q421 r2-pulse R2 ITU Supplement 7 sas-ground-start SAS Ground Start sas-loop-start SAS Loop Start router(config-controller)# cas-group 1 timeslots 1-31 type r2-analog ? dtmf DTMF tone signalling r2-compelled R2 Compelled Register Signalling r2-non-compelled R2 Non Compelled Register Signalling r2-semi-compelled R2 Semi Compelled Register Signalling <cr>
R2 signaling parameters can be customized with the cas-custom controller configuration command:
router(config-controller)#cas-custom 1 router(config-ctrl-cas)# ? CAS custom commands: caller-digits Digits to be collected before requesting CallerID category Category signal country Country Name default Set a command to its defaults exit Exit from cas custom mode invert-abcd invert the ABCD bits before tx and after rx metering R2 network is sending metering signal nc-congestion Non Compelled Congestion signal no Negate a command or set its defaults
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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