Asterisk, PBX & ISDN


I am working on dial plans and have got problems to place 2 calls through the Astribank BRI to our PBX System.

We have an inbound ISDN line and a line to our PBX, but we are not able to place 2 calls to our PBX System.

It doesn’t matter if the calls are coming through outside (ISDN) or through SIP, if the direction of the call is the PBX System.

The first goes through and its ringing on a PBX Extension, but the second one will not be handled through; it is only ringing inside from asterisk and when the first call is finished then on the PBX System the ringing is started.

Perhaps some one has a solution!?