[asterisk-dev] design question: handling incoming ETSI partial rerouting request

[Klaus Darilion]

Hi!

I wonder how I could implement the handling of incoming ETSI Partial 
Rerouting in Asterisk. What should happen in chan_zap/app_dial if this 
is received?

Should it be handled automatically or manually? I would prefer manually 
- so that in the dialplan I can decide to handle the redirection or not. 
E.g. by setting a certain DIALSTATUS and having the redirected number in 
  another variable:

Implementation:
  - chan_zap receives incoming rerouting request (on an outgoing channel)
  - chan_zap sends a CONTROL frame which indicates redirection
  - app_dial receives the redirection CONTROL frame on
    the outgoing channel and sets DIALSTATUS to REDIRECTED and also sets
    variable which contains the number of the new target, e.g. rdnis (is
    this the correct one?)
  - then in the dialplan I can decide how to handle this, e.g. forward
    upstream using zapCD (bristuff) or make a new call using Dial()

exten => _0X.,1,Dial(Zap/12345);
exten => _0X.,2,GotoIf($["${DIALSTATUS}" = "REDIRECTED"]?103:3);
exten => _0X.,3,Hangup;
exten => _0X.,103,zapCD(CALLERID(rdnis));

Any comments on this? Would a patch for this be accepted?

regards
klaus