Sdp Payload Types - Linksys SPA922 Administrator's Manual

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
AVT Dynamic Payload
INFOREQ Dynamic Payload
G726r16 Dynamic Payload
G726r24 Dynamic Payload
G726r32 Dynamic Payload
G726r40 Dynamic Payload
EncapRTP Dynamic Payload
RTP-Start-Loopback Dynamic
RTP-Start-Loopback Codec
AVT Codec Name
Linksys SPA9x2 Phone Administration Guide
SPA9x2 Phone Field Reference
Description
AVT dynamic payload type. Ranges from 96-127.
Defaults to 101.
INFOREQ dynamic payload type.
Defaults to blank.
G.726-16 dynamic payload type. Ranges from 96-127.
Defaults to 98.
G.726-24 dynamic payload type. Ranges from 96-127.
Defaults to 97.
G726r32 dynamic payload type.
Defaults to 2.
G.726-40 dynamic payload type. Ranges from 96-127.
Defaults to 96.
EncapRTP Dynamic Payload type.
Defaults to 112.
RTP-Start-Loopback Dynamic Payload.
Defaults to 113.
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 used in SDP.
Defaults to telephone-event.
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