Avaya Nortel Communication Server 1000 Manual page 405

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Copyright © 2003–2008, Nortel Networks
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the Call Server and Signaling Server. Therefore it is usually
connected to the same ELAN subnet as the Call Server and the
primary Signaling Server IP Telephony node. The Alternate Call
Server Media Gateway is equipped with sufficient trunk cards
and Voice Gateway Media Cards, and centralized CallPilot. This
provides a large degree of survivability in case of Call Server
equipment failure for IP Phone users who normally register
through the Signaling Server.
See Communication Server 1000M and Meridian 1 Small
System Installation and Commissioning (NN43011-310). See
Communication Server 1000M and Meridian 1 Large System
Installation and Commissioning (NN43021-310) for more
information about survivability on the Meridian 1 and CS 1000M.
See Communication Server 1000E Installation and
Commissioning (NN43041-310) for more information about
survivability on the CS 1000E.
c. Signaling port: The default value is 15000. The range is 1024
to 65535.
d. Broadcast port: The default value is 15001. The range is 1024
to 65535.
Enter the following Voice LAN (TLAN) configuration settings:
a. Signaling port: The default value is
The TLAN subnet signaling occurs on UDP ports 7300, 4100,
5100, and 5000.
b. Voice port: Change the Voice port only as instructed by the IP
network administrator to improve QoS for the IP Phones. This
field displays the range for RTP packets sent to the IP Phones.
For example, if RTP Header compression is used to reduce voice
bandwidth on narrow band WAN links, then the TLAN voice port
range must be set to 16 384 or higher.
The exact range is provided by the system administrator. In
general, use the default of 5200. If, however, numerous IP
Phones are working over low bandwidth WAN links using CISCO
RTP header compression, then change the voice port to a
number in the range of 16 384 to 32 767. Coordinate this value
change with the system administrator.
The TLAN Voice port range is 1024 to 65535. The default Voice
ports are 5200 to 5295. A check is performed to prevent the
TLAN Voice and signaling UDP ports from having the same
range.
Nortel Communication Server 1000
IP Line Fundamentals
NN43100-500 02.02 Standard
Release 5.5 4 February 2008
Update IP Telephony node properties 405