I could really use some help regarding this topic. Please allow me to explain the situation.
Ok we have some endpoints that are not Cisco but cisco have developed cop files for CUCM and they are seen as a cisco device and register the same as any other phone. This isn't anything to do with the problem, but I want to make this clear. These are actually dealerboards for trading and register cisco lines the same as any other cisco telephone.
Ok so here is the story;
We have a CUCM cluster in London and a local gateway for local PSTN breakout. There are endpoints that are in Dubai and the register to the CUCM cluster in London. Dubai have their own MGCP gateway for local breakout to PSTN.
Here is the problem;
When a Dubai endpoint makes a call to a PSTN number in dubain there RTP is send from the endpoint, back to the London CUCM, the London CUCM then points the RTP at the gateway in Dubai. This is using a lot of bandwidth and I am not clear on how to change this so the endpoints send media directly to their MGCP gatway.
In my lab I have sent up 2 CUCM's connected by E1 via MGCP gateways, this is to simulate the PSTN network. I can see that on CUCM 7 this is not the case and media is sent directly to the MGCP gateway, on CUCM 8 media is sent via the CUCM to the MGCP gateway. I have since then added in a software MTP on the MGCP gateway for CUCM 8 and now everything hits the gateway as I have specified MTP is required on the phones profile. This was good but even when I make an internal call, everything hits the MTP instead of using IP-IP direct medial.
Please can someone advise what I need to do or if this type of behaviour is expected.
You can use this link to learn how to collect cum traces..
We can help you look at the logs and explain whats going on..
Please include the calling and called number and time of call..Check the traces to ensure that the call is there first before sending it over here.
What type of phones are you using? What dtmf method have you specified in your mgcp configuration