02-08-2017 03:05 AM - edited 03-17-2019 09:27 AM
Hi!
I have following scheme:
SCCP IP Phone (as example 7971) > CUCM version 11.0 - SIP Trunk > SIP Dial-peer - GW 2811 12.4(24)T6 - FXO > Telco (PSTN)
The problem is that when i try to call from Cisco IP Phone to some IVR number through PSTN - dtmf does not work.
On CUCM i have following configuration:
1. Media Termination Point Required - off
2. DTMF Signaling Method - No preference
On 2811:
dial-peer voice 10 voip
session protocol sipv2
session target ipv4:<ip address of CUCM>
dtmf-relay sip-notify
codec g711ulaw
If i enable Media Termination Point Required on CUCM everything is working fine, but i don't want to do this.
Is it possible to make this scheme work without of using MTP resources?
Thank you!
Solved! Go to Solution.
02-08-2017 06:17 AM
Make are you have an inbound dial-peer as the one you posted would be an outbound dial-peer to CUCM only, you can simply add:
"incoming called-number ." to this dial peer. If that does not help try changing dtmf relay on the dial peer to "dtmf-relay rtp-nte sip-kpml".
02-08-2017 06:17 AM
Make are you have an inbound dial-peer as the one you posted would be an outbound dial-peer to CUCM only, you can simply add:
"incoming called-number ." to this dial peer. If that does not help try changing dtmf relay on the dial peer to "dtmf-relay rtp-nte sip-kpml".
02-13-2017 04:33 AM
Thank you, Chris!
Incoming dial-peer with "dtmf-relay rtp-nte sip-kpml" helped us.
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