Cisco 521SG Administration Guide - Page 116

Configuring SIP, SPCP, and NAT Configuring SIP 4 Parameter Description SIP 100REL Enable Support of 100REL SIP extension for reliable transmission of provisional responses (18x) and use of PRACK requests. Select yes to enable. Otherwise, select no. Defaults to no. EXT SIP Port The external SIP port number substituted for the actual SIP port in all outgoing SIP messages. If 0 is specified, no SIP port substitution is performed. Defaults to blank. The range is from 0 to 65535. Auth ResyncReboot The Cisco IP phone authenticates the sender when it receives a NOTIFY message with the following requests: resync reboot report restart XML-service Select yes to enable. Otherwise, select no. Defaults to yes. SIP Proxy-Require SIP proxy for each extension or behavior when an extension sees this header from the user agent. If this field is configured and the proxy does not support it, it responds with the message, unsupported. Enter the appropriate header in the field provided. For example, com.nortel.networks.firewall. SIP Remote-Party- The Remote-Party-ID header to use instead of the From ID header. Select yes to enable. Otherwise, select no. Defaults to yes. Referor Bye Delay Time when the Cisco IP phone sends BYE to terminate stale call legs upon completion of call transfers. Multiple delay settings (Referor, Refer Target, Referee, and ReferTo Target). Enter the appropriate period of time in seconds. Defaults to 4. Refer-To Target Contact Indicates the refer-to target. Select yes to send the SIP Refer to the contact. Otherwise, select no. Defaults to no. Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 115