Avaya one-X 1603SW, Administrator'S Manual, Page: 26 / 124

Network Requirements
26 Avaya 1603SW-I SIP Deskphones Administrator Guide
SIP Station Number Portability
The 1603SW-I SIP IP Deskphones provide station number portability. On startup or a reboot,
the telephone attempts to establish communication with its home Personal Profile Manager
(PPM) server.
Assume a situation where the company has multiple locations in London and New York, all
sharing a corporate IP network. Users want to take their telephone functionality from their
offices in London to their New York office. When users start up their telephones in the new
location and enter their credentials, the local PPM server usually routes them to the local call
server. With proper administration of the local PPM server, the deskphone knows to try its home
PPM server, the one in London. The user can then be automatically registered with the London
PPM server.
TCP/UDP Port Utilization
The 1603SW-I SIP IP Deskphones use a variety of protocols, particularly TCP (Transmission
Control Protocol), UDP (User Datagram Protocol), and TLS (Transport Layer Security) to
communicate with other equipment in the network. Part of this communication identifies which
TCP or UDP ports each piece of equipment uses to support each protocol and each task within
the protocol. For additional TCP/UDP port utilization information as it applies to Avaya
Communication Manager, see
UDP Port Selection on page 34.
Depending on your network, you might need to know what ports or ranges are used in the
operation of 1603SW-I SIP IP Deskphones. Knowing these ports or ranges helps you
administer your networking infrastructure.
Note:
Note:
In many cases, the ports used are the ones called for by IETF or other standards
bodies.
Some of the explanations in
Table 4 and Table 5 refer to configuration
parameters or options settings. For more information about parameters and
settings, see
Administering Options for the 1603SW-I SIP IP Deskphones .