Nortel VoIP Gateway, Configuration Manual

Page: 209 / 220

Default RTP/RTCP/T.38 Ports 209
Norstar VoIP Gateway Configuration Guide
Default RTP/RTCP/T.38 Ports
Industry standard packet types
Management and
Maintenance • SNMP
• SysLog, per RFC 3164
• Local RS-232 terminal
• Web Management
Interoperability
Interoperability • For information about the systems and devices that the Norstar VoIP Gateway
works with, refer to
Appendix E, “Interoperability,” on page 175 .
Table 35 Default RTP/RTCP/T.38 port allocation
Channel Number RTP Port RTCP Port T.38 Port
1 4000 4001 4002
2 4010 4011 4012
3 4020 4021 4022
4 4030 4031 4032
Table 36 Industry standard packet types
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
Table 34 VoIP Gateway functional specifications (Continued)