Introduction 1, Introduction — 1, Introduction – Nortel Networks Passport 4400 User Manual
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Introduction
1
Passport 4400 devices are multimedia, frame relay access devices deployed as an
overlay to an existing Passport frame relay network. In this configuration,
Passport 4400 units form distinct networks in which separate units communicate
using switched virtual circuits (SVCs) provided by the Passport backbone. This
arrangement allows small branch sites to consolidate multimedia traffic (such as
voice and LAN) over a single low-speed network link (operating at speeds such
as 56 or 64 kbps) and pass traffic through regional concentration sites served by
Passport.
Once deployed and provisioned, Passport 4400 units provide the following
services:
• voice, fax, and modem services via four different voice modules
• LAN services such as bridging and routing IP and IPX protocols
• Frame Relay DCE services.
In this manual, the Passport 4400 unit may be referred to as the 4400.