Nortel Networks 5399 User Manual
1-11
Chapter 1
Introduction
Nortel Networks 5399 Access Switch Hardware Installation Guide
Port Usage LEDs
The Port Usage LEDs, labelled 25%, 50%, 75%, and 100%, indicate the
approximate percentage of B channels that are being utilized. There are
two sets of Port Usage LEDs, one set for each WAN Port. These LEDs
are normally green. If all available B channels are in use, they turn amber
until at least one call disconnects.
approximate percentage of B channels that are being utilized. There are
two sets of Port Usage LEDs, one set for each WAN Port. These LEDs
are normally green. If all available B channels are in use, they turn amber
until at least one call disconnects.
WAN Interface Ports
The two WAN interface ports provide access to Channelized T1,
Channelized E1, or ISDN PRI lines. The WAN Interface ports come with
8-pin, RJ48C jacks for attaching the T1, E1 or ISDN cable connectors.
Channelized E1, or ISDN PRI lines. The WAN Interface ports come with
8-pin, RJ48C jacks for attaching the T1, E1 or ISDN cable connectors.