use the Transfer command in S1 and transfer the call to S2.
Dialplan on S1
[test_context]
exten => _X.,1,Transfer(SIP/${EXTEN}@IP_of_S2)
exten => _X.,n,NoOp(${TRANSFERSTATUS})
exten => _X.,n,Hangup
Dialplan on S2
[default]
exten => _X.,1,Playback(somemsg)
exten => _X.,n,Hangup
[test_context]
exten => _X.,1,Answer
exten => _X.,n,Playback(msg)
exten => _X.,n,Hangup
The context for the SIP peer C1 is defined as 'test_context' in S1 and
S2.
In C1, I have set 'promiscredir = yes' in sip.conf.
When I dial from C1, the call is successfully transferred to S1 (I get
TRANSFERSTATUS as SUCCESS and I can see C1 trying to send the call to
S2). But the call does not get authenticated on S2 and goes into
default context instead of 'test_context'. How can I transfer the call
such that S2 authenticates the call and sends it to the required
context?
Thanks