Cisco 521SG Administration Guide - Page 245

Cisco SPA IP Phone Field Reference SIP Tab A Parameter G729b Codec Name G722 Codec Name EncapRTP Codec Name Description G.729b codec name used in SDP. Defaults to G729ab. G.722 codec name used in SDP. Defaults to G722. NOTE Not supported on the Cisco WIP310. EncapRTP codec name used in SDP. Defaults to encaprtp. NAT Support Parameters Parameter Handle VIA received Handle VIA rport Insert VIA received Description If you select yes, the phone processes the received parameter in the VIA header (this is inserted by the server in a response to any of its requests). If you select no, the parameter is ignored. Select yes or no from the drop-down menu. Defaults to no. If you select yes, the SPA9000 processes the rport parameter in the VIA header (this is inserted by the server in a response to any of its requests). If you select no, the parameter is ignored. Select yes or no from the drop-down menu. Defaults to no. Inserts the received parameter into the VIA header of SIP responses if the received-from IP and VIA sent-by IP values differ. Select yes or no from the drop-down menu. Defaults to no. Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 244