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Linksys SPA9x2 Phone Administration Guide Cisco Confidential--First Draft137
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SPA9x2 Phone Field Reference
SDP Payload Types
The configured dynamic payloads are used for outbound calls only where the SPA9x2 presents
the SDP offer. For inbound calls with a SDP offer, the SPA9x2 follow the caller dynamic payload
type assignments.
The SPA9x2 uses the configured codec names in its outbound SDP. The SPA9x2 ignores the
codec names in incoming SDP for standard payload types (0 – 95). For dynamic payload types,
the SPA9x2 identifies the codec by the configured codec names. Comparison is case-
insensitive.
Parameter
Description
AVT Dynamic Payload AVT dynamic payload type. Ranges from 96-127.
Defaults to 101.
INFOREQ Dynamic Payload INFOREQ dynamic payload type.
Defaults to blank.
G726r16 Dynamic Payload G.726-16 dynamic payload type. Ranges from 96-127.
Defaults to 98.
G726r24 Dynamic Payload G.726-24 dynamic payload type. Ranges from 96-127.
Defaults to 97.
G726r32 Dynamic Payload G726r32 dynamic payload type.
Defaults to 2.
G726r40 Dynamic Payload G.726-40 dynamic payload type. Ranges from 96-127.
Defaults to 96.
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.
Defaults to G711u.
AVT Codec Name AVT codec name used in SDP.
Defaults to telephone-event.