[cisco-voip] Asking the experts (Carrier to PBX Issues)

[J. Oquendo]

Greetings all. I have a situation here I need to ask people in the field 
about. I pretty much know the answer but would like some insight from 
those who've been in the industry for long to enough to know.

Our client is having the following issue:

Caller calls in --> Out through their carrier --> Our Client's Carrier 
--> Our VoIP PBX

Caller gets in touch with our client "Hey are your phone's down I can't 
reach you are you out of business"

Our client is furious at us. We do every test in the world but we don't 
see the caller. On our troubleshooting side, we went to the vendors of 
our equipment (Cisco, Adtran, etc.) and all our tests were conclusive. 
There is nothing on our end to indicate we're doing anything wrong. We 
went to our Client's carrier

Our customer is using a carrier and calls aren't hitting their switches. 
They've (the carrier has) confirmed this. They've done intrusive testing 
to see how calls are coming in, etc. According to the carrier "this 
never happened to us when we did the phone lines over PSTN". So my 
question is, has anyone dealt with this, and if so what were your remedies?

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J. Oquendo
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x1383A743
sil . infiltrated @ net http://www.infiltrated.net 

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