McDewey

Comments Supported in Unified Communications Manager SIP Message Unified CM will respond to it if received. Unified CM does not send OPTIONS request. Yes OPTIONS INFO method is used for video support. Yes INFO — Yes BYE — Yes CANCEL Refer to 'Supported Event Packages' section. Yes SUBSCRIBE Refer to 'Supported Event Packages' section. Yes NOTIFY The system supports inbound REFER as it applies to transfer. Unified CM line side does not generate outbound REFER for transfer. It will support re-INVITE for outbound calls. Yes REFER — Yes REGISTER You can configure support for PRACK. Yes PRACK Unified CM supports receiving and generating UPDATE. Yes UPDATE Refer to 'Advanced Call Flow' section. Yes PUBLISH Table 3: Compliance with SIP Responses Comments Supported in Unified Communications Manager SIP Message — Yes 1xx Response — Yes 100 Trying Early media is supported. Yes 180 Ringing Unified CM ignores this message. No 181 Call Forward SIP Line Messaging Guide (Standard Edition) for Cisco Unified Communications Manager 6 SIP Standard Line Interface Standard Interface Compliance Summary