Cisco SPA IP Phone Field Reference
SIP Tab
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 250
B
 
G726r24 Dynamic Payload  G.726-24 dynamic payload type. Ranges from 96-127. 
Defaults to 97.
NOTE Not applicable to Cisco SPA525G/525G2 and 
WIP310.
G726r32 Dynamic Payload  G726r32 dynamic payload type. 
The default is 2. 
G726r40 Dynamic Payload  G.726-40 dynamic payload type. Ranges from 96-127. 
Defaults to 96.
NOTE Not applicable to Cisco SPA525G/525G2 and 
WIP310.
G729b Dynamic Payload G729b Dynamic Payload type.
Defaults to 99.
EncapRTP Dynamic Payload  EncapRTP Dynamic Payload type. 
Defaults to 112.
RTP-Start-Loopback Dynamic  RTP-Start-Loopback Dynamic Payload.
Defaults to 113.
RTP-Start-Loopback Codec  RTP-Start-Loopback Codec. Select one of following: 
G711u, G711a, G726-16, G726-24, G726-32, G726-40, 
G729a, or G723. 
Cisco SPA525G choices: G711u, G711a, G726-32, 
G729a, G722.
Defaults to G711u.
AVT Codec Name  AVT codec name used in SDP. 
Defaults to telephone-event.
G711u Codec Name  G.711u codec name used in SDP. 
Defaults to PCMU.
G711a Codec Name  G.711a codec name used in SDP. 
Defaults to PCMA.
Parameter Description