Cisco SPA525G Administration Guide - Page 255

SPA and Wireless IP Phone Field Reference Ext Tab B Share Line Appearance Parameter Share Ext Shared User ID Subscription Expires Description Indicates whether this extension is to be shared with other stations or private. If the extension is not shared, then a call appearance assigned to this extension is not shared, regardless the setting of for that call appearance. If the extension is shared, then whether or not a call appearance assigned to this extension is shared follows the setting of for that call appearance. The choices are shared or private. Defaults to shared. The user identified assigned to the shared line appearance. The subscription time with the SIP proxy (SPA9000). Defaults to 60 seconds. NAT Settings Parameter NAT Mapping Enable NAT Keep Alive Enable Description To use externally mapped IP addresses and SIP/RTP ports in SIP messages, select yes. Otherwise, select no. Defaults to no. To send the configured NAT keep alive message periodically, select yes. Otherwise, select no. Defaults to no. Cisco SPA and Wireless IP Phone Administration Guide 253