Linksys SPA921 Cisco Small Business IP Phone SPA9X1 Administration Guide - Page 115
Field, Description, Random REG CID On Reboot
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SIP Tab Chapter 5 Linksys IP Phone Field Reference Field Remove Last Reg Use Compact Header Escape Display Name SIP-B Enable Talk Package Hold Package Conference Package Notify Conference RFC 2543 Call Hold Random REG CID On Reboot SIP TCP Port Min SIP TCP Port Max CTI Enable Description Lets you remove the last registration before registering a new one if the value is different. Select yes or no from the drop-down menu. Defaults to no. Lets you use compact SIP headers in outbound SIP messages. Select yes or no from the drop-down menu. If set to yes, the Linksys IP phone uses compact SIP headers in outbound SIP messages. If set to no, the Linksys IP phone uses normal SIP headers. If inbound SIP requests contain compact headers, Linksys IP phone reuses the same compact headers when generating the response regardless the settings of the parameter. If inbound SIP requests contain normal headers, Linksys IP phone substitutes those headers with compact headers (if defined by RFC 261) if parameter is set to yes. Defaults to no. Lets you keep the Display Name private. Select yes if you want the Linksys IP phone to enclose the string (configured in the Display Name) in a pair of double quotes for outbound SIP messages. Any occurrences of or \ in the string is escaped with \ and \\ inside the pair of double quotes. Otherwise, select no. Defaults to yes. Enables Sylantro call features. Enables support for the Broadsoft Talk Package, which enables a user to answer or resume a call by clicking a button in an external application. Enables support for the Broadsoft Hold Package, which enables a user to place a call on hold by clicking a button in an external application. Enables support for the Broadsoft Conference Package, which enables a user to start a conference by clicking a button in an external application. If enabled, the unit will send out a NOTIFY with event=conference when starting a conference. If set to yes, unit will include c=0.0.0.0 syntax in SDP when sending a SIP re-INVITE to the peer to hold the call. If set to no, unit will not include the c=0.0.0.0 syntax in the SDP. The unit will always include a=sendonly syntax in the SDP in either case. Defaults to yes. If set to yes, the Linksys IP phone uses a different random call-ID for registration after the next software reboot. If set to no, the Linksys IP phone tries to use the same call-ID for registration after the next software reboot. The Linksys IP phone always uses a new random Call-ID for registration after a power-cycle, regardless of this setting. Defaults to no. Specifies the lowest TCP port number that can be used for SIP sessions. Defaults to 5060. Specifies the highest TCP port number that can be used for SIP sessions. Defaults to 5080. Enables or disables the Computer Telephone Interface feature provided by some servers. 5-10 Linksys IP Phone Administrator Guide Firmware Version 5.1