Call Routing Problem

[Sandy Lee]

Hi,

We're having an intermittent issue with one particular route pattern (for now, maybe more patterns are affected that we don't know of yet). When we have a CSS permitting the partition for tollbypass, sometimes the call goes through, sometimes we get the reorder tone and sometimes we get the busy tone. We checked the gw by which the calls gets routed at the remote site, but it's not overloaded, we have plenty PRI channels available. In the trace file, we only get "unallocated or unassigned number".

Any ideas ?

[carenas123]

Cisco gatekeepers are used to group gateways into logical zones and perform call routing between them. Gateways are responsible for edge routing decisions between the Public Switched Telephone Network (PSTN) and the H.323 network. Cisco gatekeepers handle the core call routing among devices in the H.323 network and provide centralized dial plan administration. Without a Cisco gatekeeper, explicit IP addresses for each terminating gateway would have to be configured at the originating gateway and matched to a Voice over IP (VoIP) dial-peer. With a Cisco gatekeeper, gateways query the gatekeeper when trying to establish VoIP calls with remote VoIP gateways.

Try:

http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a00800a8928.shtml