Buy or Renew
Buy or Renew
Cisco + Splunk: It’s a new day for your data. Learn more.
 
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 
cancel
Start a conversation
4187
Views
0
Helpful
3
Replies

DTMF tones not recognized on SIP trunk PSTN calls

efrazee
Level 1
Level 1

‎05-11-2009 10:06 AM - edited ‎03-17-2019 09:43 PM

I have a SIP trunk to the PSTN when I make calls through my gateway over the SIP trunk to PSTN DTMF is not recognized. My VOIP dial peer looks like

dial-peer voice 5001 voip

description SIP DIAL-PEER TO TELCO

destination-pattern 9[2-9]..[0-9]...

progress_ind setup enable 3

progress_ind progress enable 8

session protocol sipv2

session target ipv4:69.51.100.172:30026

session transport udp

incoming called-number .

dtmf-relay rtp-nte digit-drop

codec g711ulaw

ip qos dscp ef signaling

no vad

My SIP trunk provider says they are not seeing the DTMF on there end.

Labels:
0 Helpful
3 Replies 3

efrazee
Level 1
Level 1

‎05-11-2009 10:35 AM

I changed the dtmf-relay to

dtmf-relay rtp-nte cisco-rtp

and it works

dial-peer voice 5001 voip

description SIP DIAL-PEER TO TELCO

destination-pattern 9[2-9]..[0-9]...

progress_ind setup enable 3

progress_ind progress enable 8

session protocol sipv2

session target ipv4:69.51.100.172:30026

session transport udp

incoming called-number .

dtmf-relay rtp-nte cisco-rtp

codec g711ulaw

ip qos dscp ef signaling

no vad

0 Helpful

jizworski
Level 1
Level 1
In response to efrazee

‎05-19-2009 06:11 PM

Can you send your SIP configuration? I have it set up the same way, and I still do not get dtmf no do I hear the ringback.

Thanks

0 Helpful

jizworski
Level 1
Level 1
In response to jizworski

‎05-25-2009 06:06 AM

FYI.. I upgraded my IOS from 12.4 (20)T to 12.4 (24)T and it fixed my dtmf issue. I still don't hear ringback, however.

0 Helpful
Customers Also Viewed These Support Documents