Page 162 of 910 Features
553-3001-365 Standard 4.00 August 2005
The NAT device performs private-to-public mapping for the signaling port
for each IP Phone behind it to support multiple IP Phones. The TPS uses fixed
port numbers for signaling. The NAT device must perform consistent
private-to-public mapping for these port numbers. Table 24 lists the UDP port
number used.
Port numbers on the Voice Gateway Media Card use a fixed numbering
scheme where the starting number for the port range is configurable. The first
port on the card uses the configured starting port number; the rest of the port
numbers follow in sequence. Each port has two sequential numbers: one for
RTP and one for RTCP.
Table 24
Signaling UDP Ports
UDP Port Device Use
5000 IP Phone incoming signaling
messages to the
IP Phones, including
UFTP messaging
5100 LTPS incoming call
processing messages
to the LTPS
5105 UFTP incoming UFTP
packets to the UFTP
server
4100 LTPS incoming registration
message to Connect
Server
7300 LTPS incoming registration
messages to node
Master