Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

CCM and CME integration, SIP


This question probably was asked many times, but I'm still not able to figure out how to setup a SIP trunk between CCM (v.4.1) and CME. I read all articles about IP-to-IP SIP protocol, played around with different setting, but no luck. Can you point me to the right direction? Example configuration will be very helpful. Basically I need to make calls between 4 digits extensions between offices and to route OffNet calls.



Re: CCM and CME integration, SIP

There is no migration procedure to move phones from Cisco CallManager Express to Cisco CallManager. You just need to configure the phones in Cisco CallManager and point the TFTP server address of the phone to the publisher server so that they register to the Cisco CallManager. If the phones use DHCP, then you need to change the option 150 value on the DHCP server.

If you intend to get rid of Cisco CallManager Express completely, then you might need to remove any route patterns that point to the Cisco CallManager Express. Also add the users to whatever voicemail system your Cisco CallManager cluster uses and remove them from Cisco Unity Express.

New Member

Re: CCM and CME integration, SIP


Thank you for reply. I probably was not clear in my question - I need SIP trunk between the CCM and CCME. Phones will be registering on local CMs.



Re: CCM and CME integration, SIP

1) Create a SIP trunk in CCM

2) Create a Route Pattern in CCM that uses the SIP Trunk

3) Create a SIP voip dialpeer on the CME box

I would recommend running "debug ccsip messages" on the CME box. You can then see what SIP messages are sent for inbound and outbound calls.

If you do not see any SIP messages when you make test calls, then you know that the config of the originating device is the problem.

New Member

Re: CCM and CME integration, SIP


Thank you for your help. I was able to create the trunk and I'm able to make calls between CCM and CCME.

Here is my config:

SIP trunk on CCME router:

dial-peer voice 20 voip

destination-pattern [area code]80823..

session protocol sipv2

session target ipv4:

session transport tcp

dtmf-relay rtp-nte

codec g711ulaw

no vad

The Trunk on CCM is simple:

- Call Classification - OnNet;

- MTP - checked;

- Destination Address - IP on CCME;

- ports - 5060, 5060, TCP, 711ulaw;

- significant digits - 4;