Wondering if anyone has experienced something similar to this issue.
When calling a specific DID extension from the PSTN through a H323 gateway from a landline the call is successful........but when dialing from a mobile (tried serveral providers) the call gets a busy tone. When dialing any other DID extension through the same gateway from a mobile it is successful.
On debuging the gateway (debug isdn q931) we cannot see the call hitting when calling from a mobile at all - when calling from a landline the dubug show the call coming in as expected. When dialing any other extension from a mobile the debug shows call coming in as expected
The telco has pushed it onto us saying it is a local gateway problem as they are getting unallocated number error on their side.........but the call is not even getting to the gateway so how can it be???
Is there any other way to get proof it is the telco's problem?