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Nguyen KeThuc
Beginner

No Ringback Tone on VoIP Inbound Calls to Cisco CallManager when using TCL script auto attendant

Hi all,

 

I have one Cisco Voice gateway with one E1 connection. I am using a TCL script auto attendant. However, incoming calls don't get any ring back tone util IP Phones answer. Any ideas for me?


Thanks,
Thuc

2 REPLIES 2
Murali_s
Beginner

I'm not well versed in TCL, It seems the prob in the SIP sessions. Can u enable PRACK on the Dial peer and the SIP profile associated SIP trunk and chk. U can enable by folowing the below steps.

 

CUBE

dial-peer level:

                              dial-peer voice XXXX voip

              voice-class sip rel1xx require 100rel

CUCM

              

               Device -> Device settings -> Sip profile -> Trunk Specific Configuration

                              SIP Rel1XX Options Required Field : Send Prack if 1xx contains SDP

 

Thx

M

Thank you for reply.

I test my system again and see that there is just  not busy tone if the destination is talking .

I found  that I missed en_reenter_dest.au file in the flash. When my destination is busy, procedure act_Select will be triggered. So, the TCL script plays this file. Now, it is fine.

 

Thanks,

 

Thuc

 

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