Hi All,
We have an ippbx (with latest firmware 3.5.6) connected to our 4 ISDN2 Channels from BT.
The handsets we are using are Yealink SIP-T26. I tried testing to see if we could call forward an extension to an external number (A users Mobile). I set the call forward all option on the Yealink phone and put in the users mobile number preceeded by a 9.
I called the Extensions DDI (MSN) number from another mobile to see if the call would get diverted to the user's mobile but the call just hangs up. I can see when I call in the display on the Yealink phone says "Forward to 907xxxxxx" so looks as if the Yealink phone is doing its part properly.
Anyone had any joy in forwarding calls to external numbers with ISDN?
