[SIPForum-discussion] query regarding "early/delayed offer/ans call flow"

tester voip tester.voip1 at gmail.com
Thu Jul 28 09:37:17 UTC 2011

INVITE-200 ---- early offer
200 - ACK ---- late

Call flow is the sip basic call, only the SDP contents differ.

If ANS isnt received in ACK,the UAS will retransmit 200 till it gets SDP in

Pls correct me if am wrong.


On Wed, Jul 27, 2011 at 1:36 PM, nitisha gupta <nitisha.gupta06 at gmail.com>wrote:

> Hi
> 1. Can anyone explain about early and delay offer/ans call flow"
> 2. In delay offer ,what happens if you will not get answer in ACK.?
> Thanks
> Nitisha
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