> 1-Is strictly necesary that GW send a PRACK > messages of the 180, before send any other > messages in this case a UPDATE?
No; however the UAS may reject the UPDATE. For instance, there might be offer/answer reasons to reject the UPDATE if received before the PRACK (which potentially could contain an offer or answer SDP); see RFC 3311. The following are a few RFC's of potential interest from an offer/answer perspective if the UPDATE contained an SDP: RFC 3311, RFC 6337, and RFC 6141. -- This email is intended solely for the person or entity to which it is addressed and may contain confidential and/or privileged information. If you are not the intended recipient and have received this email in error, please notify BroadSoft, Inc. immediately by replying to this message, and destroy all copies of this message, along with any attachment, prior to reading, distributing or copying it. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
