/mcpPossible Issues Here are some possible issues you can encounter. After Cisco IOS Version 15.4, the SIP profile feature is introduced to modify inbound SIP messages as well. • Cisco IOS Versions 15.3 and earlier only support SIP profiles in the outbound direction. • Related Information In Depth Explanation of Cisco IOS and IOS-XE Call Routing Understanding Inbound and Outbound Dial Peers Matching on IOS Platforms
