[Sip-implementors] About ACK request!
david.pang at freescale.com
Sun Sep 25 21:55:39 EDT 2005
No transaction for ACK is not exactly true.
For 3xx~6xx response, ACK request is part of the INVITE transaction.
For 2xx response, ACK is generate and send by the UAC core, and no
transaction is created.
Zhenyu Wu wrote:
> We know, there is no transaction for ACK request. But in section 13.1
> of RFC3261,
> there is such a statement: "For final responses between 300 and 699,
> the ACK
> processing is done in the transaction layer and follows one set of
> rules (See
> Section 17). For 2xx responses, the ACK is generated by the UAC core".
> why the ACK processing is done in the transaction layer, as there is no
> transaction for ACK request?
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> Sip-implementors at cs.columbia.edu
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