User`s manual

MP-1xx/H.323 User’s Manual 10. Appendices
Version 4.2 Beta 119 June 2003
Appendix B - RTP/RTCP Payload Types
RTP Payload Types are defined in RFC 1889 and RFC 1890. AudioCodes has added new
payload types to enable advanced use of other coder types. These types are reportedly not used
by other applications.
Note: Refer to the IPmedia 2000 Release Notes, Document #: LTRT- 00690 for the supported
coders.
B.1 Packet Types Defined in RFC 1890
Table 10-1: Packet Types Defined in RFC 1890
Payload Type Description Basic Packet Rate [msec]
0 G.711 µ-Law 20
2 G.726-32 20
4 G.723 (6.3/5.3 kbps) 30
8 G.711 A-Law 20
18 G.729 20
200 RTCP Sender Report Randomly, approximately every 5 sec (when
packets are sent by channel)
201 RTCP Receiver Report Randomly, approximately every 5 sec (when
channel is only receiving)
202 RTCP SDES packet
203 RTCP BYE packet
204 RTCP APP packet