Asterisk record all calls even when transferred

Question

I do not know how to record ALL calls. I am having trouble when transferring the calls. Anyways this is my configuration:

sip.conf:

[general]
  tcpenable=yes
  udpenable=yes
  ... etc

[peer1]
  secret=somePassword
  type=friend
  disallow=all
  ... etc

[peer2]
  secret=somePassword
  type=friend
  disallow=all
  ... etc

[peer3]
  secret=somePassword
  type=friend
  disallow=all
  ... etc

extensions.conf

...
...
exten => 101,1,NoOp(Calling peer1)
; record call
same => n,MixMonitor(${UNIQUEID}.wav)
; call peer
same => n,Dial(SIP/peer1)
same => n,Hangup()

exten => 102,1,NoOp(Calling peer2)
; record call
same => n,MixMonitor(${UNIQUEID}.wav)
; call peer
same => n,Dial(SIP/peer2)
same => n,Hangup()

exten => 103,1,NoOp(Calling peer3)
; record call
same => n,MixMonitor(${UNIQUEID}.wav)
; call peer
same => n,Dial(SIP/peer3)
same => n,Hangup()

This configuration works great most of the time. Most calls get recorded. There is a scenario when the call will not get recorded. If I perform the following steps the call will not be recorded:

1. peer1 calls peer2 and there is a new recording which is great.
2. peer1 transfers the call to peer3
3. The moment the call is transferred, MixMonitor stops recording the call.

How can I record all calls even if I perform this scenario?

Answer 1

You have start again mixmonitor for transfered call, using SAME file(option 'a')