I have 2 asterisk (A1, B1) systems. A1 and B1 are connected via SIP TRUNK, and B1 is connected to the operator’s system. When mobile A dials the landline number of system A1, it is then forwarded to mobile C offline by B, and then sent to system B1 and finally to the operator’s system. Now mobile C needs to display the number of mobile A.
need to change the to header to number B.
and if i use exten => _X.,n,Dial(SIP/${EXTEN}!0573123456),it works.