McDewey

Incoming (to Unified CM) Outgoing (from Unified CM) Variable Message Lines Called Party Number Called Party Number userpart Contact:<sip:userpart@ip:port > Endpoint IP address Unified CM IP address ip Endpoint port Unified CM port port Sequence number from initial INVITE Sequence number from initial INVITE number Cseq: number INVITE None Reverse resolved CAL value and mode local-access-level Confidential-Access-Level local-access-level SEMI reflected-access-level [SEMI access-display] None Resolved CAL value and mode reflected-access-level None Text corresponding to resolved CAL value Access-display Endpoint SDP Unified CM SDP sdp SDP [sdp] Message Timers The following timers are service parameters that are configurable in Cisco Unified Communications Manager Administration. The following table provides the configuration data for the SIP timers that Cisco Unified Communications Manager maintains. Table 16: Message Timers Definition Value (Default/Range) Message The time to wait for a 100 response to an INVITE request. 500 ms / 100–1000 ms trying The time to wait for a 200 response to an ACK request. 500 ms / 100–1000 ms connect The time to wait for a 200 response to a BYE request. 500 ms / 100–1000 ms disconnect Limits the time duration for which an INVITE is valid. 3 min / 1–5 min expires SIP Line Messaging Guide (Standard Edition) for Cisco Unified Communications Manager 24 SIP Standard Line Interface Message Timers