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SIP Multimedia PC Client User Guide
[Standard—Nortel Networks Confidential]
Useful terms to know
The SIP Multimedia PC Client uses some terms that may be new to you. Take a
moment to read through the explanations to familiarize yourself with the
following terms:
• “Proxy server” on page 22
• “Address” on page 22
• “Network-based address book” on page 23
• “Buddies” on page 23
• “Presence” on page 23
• “Service package” on page 23
Proxy server
A proxy server is an application that relays data between your SIP Multimedia PC
Client and the network. The IP address of the proxy server is already defined in
your SIP Multimedia PC Client. When you connect to the proxy server you need
to provide a valid username and password.
Address
When a procedure instructs you to enter an address it means entering either a
telephone number or a SIP address. A SIP address is a unique identifier of users
on the IP network. It has the same format as an email address, for example,
jdoe@lab1.org, but it is not an email address. The network can identify where you
are and route your calls by tracking your SIP address when you sign-in to any SIP
Multimedia PC Client, SIP Multimedia Web Client or i2004 Internet Telephone.
In order to make it easier to place calls, you can store addresses (SIP addresses or
telephone numbers) in an network-based address book.
Using SIP addresses allows you to take advantage of the more powerful features
of the PC Client, such as presence.