Hi We have an Issue, after upgrading to R80.30 to R80.40 Voice message header contact URI is not nat in the firewall.
we have checked the topology configuration internally and external - okay
NAT - Static Object NAT - okay
Access rule Configured service as sip(UDP) pre-defined and for tcp-5060, custom service object.
with R80.30 same configuration works fine, but without any changes just upgrade the version to R80.40 voice is not connected. when we execute tcpdump we have observed layer-3 nat working and issue was VoIP packet layer-7 message header contact URI not nat.
Please advice how to resolve this issue.
Thank you!