09-13-2011 12:10 AM - edited 03-16-2019 06:57 AM
09-13-2011 05:51 AM
Hi,
I think you need to investigate further by having "debug isdn q931" and "debug isdn q921" at both gateways. There could be multiple reasons for this error which are described in below link. Traces will help us to come to a conclusion.
http://www.mail-archive.com/ccie_voice@onlinestudylist.com/msg07948.html//www.mail-archive.com/ccie_voice@onlinestudylist.com/msg07948.html
Regards...
-Ashok.
09-13-2011 09:38 AM
Hi
Try adding this to the config on both routers
!
voice service voip
sip
bind control source-interface GigabitEthernet0/0
bind media source-interface GigabitEthernet0/0
transport switch udp tcp
!
!
sip-ua
!
!
And on the VOIP dial peers on both routers
add
dtmf-relay sip-notify rtp-nte
HTH
Alex
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