Try this. voice class sip-profiles 1 request INVITE sip-header allow-header modify ", UPDATE" ""
apply this profile under voice service voip -> sip, or under the dial-peer pointing to the ITSP. /S From: cisco-voip [mailto:[email protected]] On Behalf Of Ahmed Abd EL-Rahman Sent: Thursday, December 3, 2015 4:03 PM To: [email protected] Subject: [cisco-voip] SIP call failure Dear Gents, I have a problem of random calls disconnection after about 1 minute of the calls over a SIP voip line connected to a cisco VGW router, the telco company asks me to remove the SIP update message that the router sends, anyone have an idea how can I do that ? Best Regards Ahmed Abd EL-Rahman Senior Network Engineer - KSA
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