CCIS calls timing out / disconnecting

[crankyralph]

SV8100s - multiple sites linked by CCIS

Voip calls work fine, but after about 5 minutes, the calls go dead. There is no beeping like you get with packet loss, the call just stops; goes to silence, does not hang up or give you dial tone. I can't find anything with the call timers or settings, so I want to blame the network / routers, but have no ammo.

Any thoughts? Thanks in advance.

 

[belevedere]

You need to put a sniffer on it. Try wireshark, it's a free download.

 

[3racefan3]

Has a similar issue with polycom video conference. network folks had to change a setting on the router or switch I do not remember which one.