ACLI Configuration Guide Session Plug-In Language SIP Trunking SPLs for Specific Service Providers SPLs for NTT Trunk Support Configure the CUCM Facing SIP Trunk Support Options Configure the CUCM Facing SIP Trunk Support Options Configure these SPL options on the CUCM facing sip-interface. To configure the SPL option: In Superuser mode, type configure terminal and press Enter. ACMEPACKET# configure terminal Type session-router and press Enter. ACMEPACKET(configure)# session-router ACMEPACKET(session-router)# Type sip-interface and press Enter. ACMEPACKET(session-router)# sip-interface ACMEPACKET(sip-interface)# Type spl-options + ocNttMsgConverterTagging=opposite and press Enter. ACMESYSTEM(sip-interface)# spl-options + ocNttMsgConverterTagging=opposite Type spl-options + dyn-contact-start and press Enter. ACMESYSTEM(sip-interface)# spl-options + dyn-contact-start Type done and save your work.