Filter
Top Products
132 ITG engineering guidelines
Port numbers used by IP Trunk 3.01 (and later)
Table 25 "Pre-defined TCP ports" (page 132) and Table 26 "Pre-defined
UDP ports" (page 132) list the pre-defined ports used by IP Trunk 3.01
(and later).
Table 25
Pre-defined TCP ports
Network interface Port use Port number
ELAN DCHIP inter-card messaging
6001
TLAN H.225 TCP port
1720
(destination port only)
Table 26
Pre-defined UDP ports
Interface Port use Port number
ELAN BOOTP Server 67 (on Leader card)
ELAN SNMP
161
TLAN RTP Ports
2300 – 2362
(TCID*2 + 2300)
or
17300 – 17362
(TCID*2 + 17300)
TLAN RTCP Ports
2301 – 2363
(TCID*2 + 2300 + 1)
or
17301 – 17363
(TCID*2 + 17300 + 1)
QoS fallback thresholds and IP Trunk 3.01 (and later)
In IP Trunk 3.01 (and later), QoS remains in effect when communicating
between non-Gatekeeper-routed endpoints (IP Trunk 3.01 (and later)
endpoints). For more information, see "Fallback threshold" (page 165) and
"Setting the QoS threshold for fallback routing" (page 165).
However, QoS fallback for Gatekeeper-routed calls (calls to
Gatekeeper-routed endpoints) is not possible. This is because the calls
routed by the Gatekeeper can be directed to a variety of endpoints, some of
which might not have direct PSTN connectivity.
A well engineered network greatly reduces the need for QoS fallback to
PSTN. A well engineered network includes the following features:
•
implementing network QoS features such as DiffServ and 802.1Q/p to
give priority to real-time voice traffic
Nortel Communication Server 1000
IP Trunk Fundamentals
NN43001-563 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2007, Nortel Networks
.