Attempting to Dial an AT+T Wireless Customer
I represent a company that has SIP interconnect to both VZ and AT+T. We are attempting to contact a customer who subscribes to AT+T wireless, but the call is getting rejected. I am attempting to determine if it is being rejected at the user/phone equipment or by the AT+T wireless network. We hand it off to VZ and they have confirmed that the call reject is coming from AT+T. What AT+T wireless entity can I pursue this with?