I am going to implement a Cisco2821 Gateway using BRI to PSTN in Germany. I have been told that the provider support Overlap-sending which is good because I then dont have to worrie to much how to implement the dialplan in CCM.
Am I limited to MGCP or does H323 support overlap sending using BRI. I think I am looking for the Backhaul-BRI feature here but I am not sure.
Any ideas would help.
Solved! Go to Solution.
Sorry, overlap in sending is not supported. you will have to realy on the interdigit timeout (3 or 4 seconds).
Please provide a config example and isdn q931 trace to support this claim (overlap sending), as I would be very interested in seeing that !
Great, is this CCM which version, and how do you configure that ?
ASAIK, this is not possible with CME.
As long as the route pattern has "allow overlap sending" checked, it should not matter which cm version you are running, cause the overlap sending and receiving is done by H.323 gateway, callmanager has nothing to do with it except the "route pattern", you don't need to change any service parameters even.
CME is doable also.
Is overlap-sending done by the gateway if you are using MGCP, thougt that was part of the Backhaul function terminating at the CCM.
I am still in the Design phase with this one. Looking at your replies, with IOS 12.4(4) - H.323 and Overlap-sending is supported. Is BRI supported or is it PRI only? I saw that you attached debug.txt but how do I download it?