Recently upgraded system to 9.1.2. I have a couple dozen phones when dialing an outside line there phone masking is not displaying. The masking is showing up with the Bill To Number of the PRI's. I have had numerous Cisco TAC show me and tell me that when calls leaving the gateways they are leaving with all digits, and when the same call enters our gateways they are being changed to this BTN. However this literally happens every other call. The first call will show all correct 10 digit masking and the second call with have the BTN.
I spent weeks with Verizon and they added these numbers to a switch screening table so they can identify the numbers correctly coming in. After weeks waiting for them to make these changes it still does NOT work. Please any suggestions at all will help. Im at a loss in what to do. I can not find this phantom number anywhere and to the best of my knowledge this masking number that shows up is just the BTN of our PRI's.
Do you have multiple PRIs? Maybe the route list is configured for a different hunting algorithm and sending calls out a different PRI? Can you run debug isdn q931 on the gateway you think calls are going out on and see if both the calls that have the right and wrong masks go out the same gateway and you are seeing the masks correctly. If you are seeing the correct masks on both calls, then its a provider issue.
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