Configuration Guide Session Plug-In Language Enterprise SPLs SIP Trunking SPLs for Specific Service Providers SPLs for NTT Trunk Support Configure the Trunk Facing SIP Trunk Support Option Configure the Trunk Facing SIP Trunk Support Option Configure these SPL options on the trunk facing sip-interface. To configure the SPL option: Access the sip-interface configuration element. ORACLE# configure terminal ORACLE(configure)# session-router ORACLE(session-router)# sip-interface ORACLE(sip-interface)# Type spl-options +dyn-contact-method=randomseed and press Enter. ORACLE(sip-interface)# spl-options +dyn-contact-method=randomseed Type spl-options +ocNttMsgConverterTagging=enabled and press Enter. ORACLE(sip-interface)# spl-options +ocNttMsgConverterTagging=enabled Type done and save your work.