About ShabnamM

ShabnamM · 07-04-2026

Hello everyone,I have a branch connected to the local telecom provider via a SIP trunk. The provider sends DTMF as inband, while the rest of our branches use RTP-NTE (RFC 2833).I have been trying to convert the DTMF from inband to RTP-NTE on our Cisc...

ShabnamM · 11-13-2025

Hello,Our head office is set up in a centralized configuration, and each branch connects to the CUCM via a SIP trunk provided by the telecom provider. The SIP trunk connects to a Cisco 4431 router located at each branch.Everything works fine for all ...

ShabnamM · 07-06-2026

Thank you for your comment.Actually, I had already tried several approaches, including configuring an MTP, a transcoder, LTI, and even the dtmf-interworking command, but none of them resolved the issue.After @Nithin Eluvathingal reply, I realized t...

ShabnamM · 07-06-2026

Thanks a lot for your help!I'm happy to say that configuring the LTI solved the problem. That was exactly the missing piece in my deployment.I also tried using "voice-class sip dtmf-relay force rtp-nte", but I couldn't get it to work in my environmen...

ShabnamM · 11-14-2025

Thank you both for your responses. On the router, the interfaces for the LAN and ITSP are separate. Today, while I was preparing to perform a packet capture, I noticed the IVR was playing mysteriously, despite no configuration changes on my part. I m...

Member Since	‎11-13-2025 08:46 AM
Date Last Visited	‎07-06-2026 02:00 PM
Posts	5

User Statistics

User Activity

DTMF Inband to RTP-NTE Conversion Issue with SIP Trunk and Cisco Unity

IVR Issue When SBC and Media Have Separate IPs from Telecom Provider

Re: DTMF Inband to RTP-NTE Conversion Issue with SIP Trunk and Cisco U

Re: DTMF Inband to RTP-NTE Conversion Issue with SIP Trunk and Cisco U

Re: IVR Issue When SBC and Media Have Separate IPs from Telecom Provid