Hi Good People,
Please help me to solve my problem. I have a CUBE that works fine for Voice traffic, and now I'm configuring the T38 protocol to enable the fax service. The problem is FAX can only send/receive faxes if the others are running on SIP too. But if a different side is running on E1, the fax will not work.
I've gathered the debug output from CUBE, but still don't understand what's going on.
The call flow is: ITSP <--> SIP <--> CUBE <--> CUCM <--> MGCP <--> VG224 <--> FAX Machines.
Thanks in advance.
Solved! Go to Solution.
rules for message communication and sampling for channel information.
T.38 - Delay<1000ms, Jitter<300ms, Packet loss should be NONE unless T.38 with redundancy.
Passthrough - Delay<1000ms, Jitter<30ms, Packet loss should be NONE.
Protocol Based switchover - This is standard based.
NSE Based switchover - This is proprietary and works only between Cisco voice gateways.
Can find the referance SIP communication message between the devices(FAX)