[Asterisk-Dev] iax protocol seqnos

[Derek Smithies]

Hi,
 I would like to clarify the use of  sequence numbers for ack 
packets in the iax2 spec.


When a full frame is received (that requires an ACK frame in response)

 an ack frame is generated. The oseqno of the ackframe, and the timestamp 
of the ackframe are generated differently to those of other fullframes.

The oseqno of the outgoing ack frame is equal to the 
  iseqno of the frame being acknowledged.

The timetstamp of the outgoing ack frame is equal to the 
  timestamp of the frame being acknowledged.


I think the spec should explicitly state these things.

I have not (yet) done the analysis of lagrp, pong, regack packets to see 
if they are the same as ACK frames.

Derek.                                                                                                                                            


-- 
Derek Smithies Ph.D.                         
IndraNet Technologies Ltd.                
Email: derek at indranet.co.nz         
ph +64 3 365 6485                          
Web: http://www.indranet-technologies.com/