Hi,
We are connecting some Cisco SS7 equipment (ITP) to a GSM network using Black Box G.703 balun modules. Attached is a schematic diagram of the connections.
The links work fine most of the time. But, occasionally all the E1 links on the Cisco SS7 equipment go down. We haven't yet found what causes the problem. Usually the only way for the links to come up is to reboot the equipment or sometimes to shutdown and startup the E1 controllers.
We have some connections going straight to another SS7 equipment through a couple of baluns. We suspect these connections might be causing some problem because we haven't got the grouding configuration correct for the balun's involved in these connections. Ever since we have disconnected these connections the problem seems to have vanished.
Can someone suggest anything or has someone seen any problem like this before?
Thanks,
Abhik.
[TELECOM Digest Editor's Note: Abhick's schematic diagram was _not_ included with his message. Perhaps any of you who know about this topic can commuicate direct with him as needed. PAT]