[SIPForum-discussion] Early Media Call flow

[Kamal Kandpal]

*Hi All ,
**I have come across one sceanrio :*

*Invite sdp(O1)---------------------->
**183 sdp V1(A1) <---------------------- PCMU codec , Audio port 2000*

*Prack --------------------- >*

*200 <----------------------
**200 sdp V2 <---------------------------PCMA codec , Audio port 5000
**ACK ------------------------------------->
**Here Sdp coming in 183 and 200 is completely different and coming
from different user Agent over same Call-id.*

*As offer answer is complete after 183 sdp ,how should we handle 200
coming with different sdp ?
**1. Assuming 200 sdp as new offer and send answer in ACK ?
**2. Ignore 200 sdp as offer answer already completed ? *

*As per RFC 6337 SDP should not be included in subsequent response
once offer answer has been completed.*

*Thanks*

*Kamal*
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