Table of Contents
Advertisement
376 NT6D70 SILC Line card
A logical terminal is any terminal that can communicate with the system
over a DSL. It can be directly connected to the DSL through its own
physical termination or be indirectly connected through a common physical
termination.
The length of a DSL depends on the specific terminal configuration and the
DSL wire gauge; however, it should not exceed 1 km (3,280 ft).
The SILC interface uses a four-conductor cable that provides a differential
Transmit and Receive pair for each DSL. The SILC has options to provide a
total of two watts of power on the Transmit or Receive leads, or no power at
all. When this power is supplied from the S/T interface, the terminal devices
must not draw more than the two watts of power. Any power requirements
beyond this limit must be locally powered.
Other functions of the SILC are:
•
•
•
•
•
•
•
The SILC provides eight S/T four wire full duplex polarity sensitive interfaces
that are used to connect ISDN BRI compatible terminals over Digital
Subscriber Loops (DSL) to the Meridian 1. Each S/T interface provides two
B-channels and one D-channel and supports a maximum of eight physical
connections that can link up to 20 logical terminals on one DSL.
A logical terminal is any terminal that can communicate with the Meridian
1 over a DSL. It may be directly connected to the DSL through its own
physical termination or be indirectly connected through a common physical
termination.
The length of a DSL depends on the specific terminal configuration and the
DSL wire gauge, however, it should not exceed 1 km (3,280 ft).
The SILC interface uses a 4 conductor cable that provides a differential
Transmit and Receive pair for each DSL. The SILC has options to provide a
total of 2 Watts of power on the Transmit or Receive leads, or no power at
all. When this power is supplied from the S/T interface, the terminal devices
must not draw more than the 2 Watts of power. Any power requirements
beyond this limit must be locally powered.
Copyright © 2003-2008, Nortel Networks
.
support point-to-point and multi-point DSL terminal connections
execute instructions received from the MISP to configure and control
the S/T interfaces
provide channel mapping between ISDN BRI format (2B+D) and system
bus format
multiplex 4 D-channels onto one timeslot
perform activation and deactivation of DSLs
provide loopback control of DSLs
provide a reference clock to the clock controller
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Advertisement
Table of Contents
