Cisco SPA525G Administration Guide - Page 126
Configuring Security, Quality, and Network Features, Supported Codecs
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6 124 Configuring Security, Quality, and Network Features Configuring Voice Codecs Parameter Preferred Codec Use Pref Codec Only Second Preferred Codec Third Preferred Codec G729a Enable Description Preferred codec for all calls. (The actual codec used in a call still depends on the outcome of the codec negotiation protocol.) Select one of the following: • G711u (all models) • G711a (all models) • G726-16 (not supported on WIP310, SPA525G) • G726-24 (not supported on WIP310, SPA525G) • G726-32 • G726-40 (not supported on WIP310, SPA525G) • G729a • G723 (not supported on WIP310, SPA525G) • G722 (SPA525G) See "Supported Codecs" section on page 118. Defaults to G711u. To use only the preferred codec for all calls, select yes. (The call fails if the far end does not support this codec.) Otherwise, select no. Defaults to no. If the first codec fails, this codec is tried. Defaults to unspecified. NOTE: Not applicable to the WIP310. If the second codec fails, this codec is tried. Defaults to unspecified. NOTE: Not applicable to the WIP310. To enable the use of the G.729a codec at 8 kbps, select yes. Otherwise, select no. Defaults to yes. Cisco SPA and Wireless IP Phone Administration Guide