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Silver

T1 CAS FXO-loop-start inbound digits to CVP not passing

Hi All,

Per the SRND and the CVP configuration guides it appears there is a way to pass inbound DNIS via a T1 FXO.  First from the SRND:

For Digital FXO (T1 CAS) Trunks, Dialed Number Identification Service (DNIS) must be configured on the gateway, based on the T1/E1 channel on which the call arrives. The PBX is programmed to route certain DNIS calls over certain T1 trunks. Because the call arrives to the gateway on that trunk, you can definitively configure its DNIS. The drawback to this approach is that the gateway trunk allocation must be predetermined. You must know what percentage of calls arrive to which DNISs so that the trunk groups on the gateway can be allocated accordingly.

An alternate method that can be used on some PBXs is a "converse on step," whereby DTMF tones indicating DNIS and ANI are sent to the IVR. This method requires a single main Unified ICM routing script to input DNIS digits using a Get Data (GD) Microapplication and to invoke the correct sub-script based on the collected DNIS digits. This method requires close coordination between Cisco, the PBX vendor, and the customer, and it has not yet been tested.

And from the configuration guide: 

Example: Gateway Configuration for Hookflash Relay

controller T1 2/0

framing esf

linecode b8zs

 

 

ds0-group 1 timeslots 1-24 type fxo-loop-startvoice-port 0/1/0:1

output attenuation 0

timing hookflash-out 600 */ Can be adjusted for the specific needs of PBX /*

dial-peer voice 11 potsport 0/1/0:1

but cannot get them beyond - ccapi inout and debug voip dialpeer act as if nothing is passed in.  The call is incoming from an Avaya PBX, the number being passed is 8986809.

 

 

forward-digits all */ Necessary to forward DNIS to CVP for T1/CAS FXO /*

We can see the digits coming into the router via debug voip vtsp all

  If I do a connection-plar on the voice-port the call successfully goes to CVP.

Please see attached files

Any assistance would be greatly appreciated!

Art

3 REPLIES
Silver

T1 CAS FXO-loop-start inbound digits to CVP not passing

This somehow got gabrbled on the way in - it should be:

We can see the digits coming into the router via debug voip vtsp all but cannot get them beyond - ccapi inout and debug voip dialpeer act as if nothing is passed in. The call is incoming from an Avaya PBX, the number being passed is 8986809. If I do a connection plar on the voice-port the call completes successfully.

From the configuartion guide:

Example: Gateway Configuration for Hookflash Relay

controller T1 2/0

framing esf

linecode b8zs

 

 

ds0-group 1 timeslots 1-24 type fxo-loop-startvoice-port 0/1/0:1

output attenuation 0

timing hookflash-out 600 */ Can be adjusted for the specific needs of PBX /*

dial-peer voice 11 pots

port 0/1/0:1

forward-digits all */ Necessary to forward DNIS to CVP for T1/CAS FXO /*

Silver

T1 CAS FXO-loop-start inbound digits to CVP not passing

I think I fiured out the  steps

1.  PLAR all the calls from the T1 to the CVP

2. Have it kick off the "single main Unified ICM routing script" mentioned above which collects the DTMF digits via the GD

3. Parse the digits into DNIS and ANI and select treatment/route accordingly.

Silver

T1 CAS FXO-loop-start inbound digits to CVP not passing

FYI - this worked.  We were able to extract the DTMF digits with a GD which then can be used by a sub-script to determine treatment/routing.  The router does NOT see the digits as DNIS/ANI since it is a T1 FXO.

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