Hi I have a doubt related to resubmitting of the INVITE request for 421/420. Can any one please clarify me? While re-submitting a INVITE request upon receiving a 421 Extension Required/420 Bad Extension, Are there any recommendation of using the same Call-Id/From tag of original INVITE request in the resubmitted request? If so, is there any reason/use-case for such recommendation? Regards Srikanth
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