Hi all,
I would like to know if it’s possible with Asterisk and ISDN line (with chan_misdn for example) to transfer an call from PSTN to another PSTN user, without keeping 2 ISDN channels UP ?
Example 1 :
A (PSTN user) call B (* user, maybe with a SIP phone)
B pickup the line (1 ISDN channel Up)
B decide to transfer the call to C (PSTN user)
B place the line with A in Hold state and call C (2 ISDN channels Up)
C is OK to take the call.
B transfer A to C (the 2 ISDN channel are freed and, of course, A and C continue the call together)
Example 2 :
A (PSTN user) call B (* user, maybe with a SIP phone)
B pickup the line (1 ISDN channel Up)
B decide to transfer the call to C (PSTN user)
A and C get connected directly (thru the PSTN)
This type of transfer exist with ISDN phones, and I mind that this functions is done by the ECT (Explicit Call Transfer) feature of ISDN, but how to trigger it in Asterisk ?
Thanks by advance
Have a nice day