Payload Types Defined In Rfc 1890; Defined Payload Types - 3Com VCX V7122 User Manual

A
PPENDIX
P
AND ORT
RTP Payload Types are defined in RFC 1889 and RFC 1890. The gateways also have new
payload types to enable advanced use of other coder types. These types are reportedly not
used by other applications.
See the VCX V7122 & TP-1620 SIP Release Notes for the supported coders.

Payload Types Defined in RFC 1890

Table 41 Packet Types Defined in RFC 1890
Payload Type Description
0 G.711 µ-Law
2 G.726-32
4 G.723 (6.3/5.3 kbps)
8 G.711 A-Law
18 G.729A
200 RTCP Sender Report
201 RTCP Receiver Report
202 RTCP SDES packet
203 RTCP BYE packet
204 RTCP APP packet

Defined Payload Types

Table 42
Defined Payload Types
Payload Type Description
35 G.726 32 kbps
36 G.726 24 kbps
38 G.726 40 kbps
3Com VCX V7122 SIP VoIP Gateway User Manual
C: RTP/RTCP P
A
LLOCATION
AYLOAD
Basic Packet Rate [msec]
10,20
10,20
30
10,20
20
Randomly, approximately every 5 seconds (when packets are
sent by channel)
Randomly, approximately every 5 seconds (when channel is
only receiving)
Basic Packet Rate [msec]
20
20
20
T
YPES
205