Specifications

Chapter 4: Specifications
UDP Port Assignments
Page 4-60 Mitel
®
5000 Installation Manual – Issue 3.0, October 2008
UDP Port Assignments
Expanded IP endpoint capability with v2.0 and later requires changes in User Datagram
Protocol (UDP) port usage. If the Mitel 5000 v2.x equipment operates inside a firewall and
services external IP endpoints, the firewall configuration needs to be updated to reflect the
changes in the UDP port assignments of system.
Tutorial
In DB Programming, the Audio Stream Receive Port defines the first of 33 even port numbers
that off-node IP resources use to transmit audio data to this IP resource. You must choose an
even-numbered value. The base audio port number, plus 64 additional port numbers, cannot
conflict with other port numbers on the IP connection.
For example, if the base audio port number is 5000, no other port numbers on the IP connection
can fall in the range from 5000 to 5064. Changing the Audio Stream Receive Port resets the IP
resources. The system broadcasts changes to an IP connection Audio Stream Receive Port to
the other nodes in the private network as a database update. This field corresponds to the off-
node IP connection Remote Audio Receive Port. To change the port number, enter the new
number in the text box, then press ENTER or click on another field. The default is 5004, and the
range of values is 1026–65468.
UDP Port Assignments in v2.x
To support external IP endpoints, the Mitel CS-5200, CS-5400, or CS-5600 requires that a
range of UDP ports be opened through the firewall. Table 4-21 shows the UDP port range
applicable to v1.x and the UDP ports applicable to v2.x. These port assignments apply to the
Processor Module (PM-1) and the Processor Expansion Card (PEC-1) in the Inter-Tel 5000
Base Server, but not to the Processing Server PS-1.
NOTICE
No-Audio Condition Possible. Failure to adjust the firewall UDP port settings to the
appropriate range can result in no-audio conditions for external IP endpoints, IP trunks, or IP
networking.
IMPORTANT
Because SIP uses port 5060 (by default) for call control; firewalls, NATs, and
routers often treat this port as a “special case” and may block its use by non-
SIP packets. If your network currently uses SIP, Mitel strongly recommends
that you use a different port range (other than 6004–7039) for audio stream
ports; otherwise, you may experience audio problems over the IP network.
Table 4-21. UDP Port Assignments for v1.x and v2.x
System
Version
UDP Port Range
v1.x UDP 6004–6247
[Includes both Real-time Transport Protocol (RTP) and
Real-time Transport Command Protocol (RTCP) ports]
v2.x UDP 6004–7039 (RTP and RTCP)
• Processor Module (PM-1) base port – 6004
• Processor Expansion Card (PEC-1) base port – 6604