We have a customer who insists to use his old Nortel PBX system so we provide a SIP line via Linksys SPA 2102 adapters to his office and he connects it to his PBX like a POTS line.
The setup works ok, and we are not going with the customer about it, but now there is a problem when he wants to retrieve his PBX voice mail from outside the office. To access the Nortel voice mail he dials * * which is supposed to take him to voice mail. Instead it takes him to the company directory. Our log shows we are transmitting the ** digits but his PBX does not react to it. When they connect a real POTS line to the PBX, ** works.
Anyone have an idea of why this is happening?