Q: Why does the terminal fail to register or drop offline after successful registration?
Check the configurations as follow:
1. Check if the working mode is correct (set by appmode command): If Eudemon2000 is connected with NAT equipment, or with both NAT and IAD equipment at the same time, it should be configured to multi-area mode.
2. Check if gateway command is configured correctly. If Eudemon2000 series are connected to the Softswitch through router, it needs to configure the command, and so does if a router exists between Eudemon2000 series and IAD and terminals.
Command format: gateway Interface IP address of Eudemon2000 series Interface IP address of next hop router. IP route looks for next hop according to the destination address of packets, and gateway uses the source address of packets to find the next hop.
3. The time set by timer refresh should be less than the aging time of NAT on NAT/FW equipment in network. It is suggested to set it as 1/2 of the aging time. Generally, the aging time of NAT equipment is 30 seconds. We could set it to 5 seconds at minimum. For MGCP users, if the network does not work well, use timer mgcp command to set the MGCP timer longer.