Lucent Technologies DDM-2000 OC-3 User Manual

363-206-285
Circuit Pack Descriptions
Issue 3 June 2001
7-7
Interface to Other DDM-2000 OC-3 Shelves 7
The SYSCTL interfaces with SYSCTLs of other DDM-2000 OC-3 shelves through
inter-shelf control bus. This interface allows the user to access each DDM-2000
OC-3 shelf in a bay via a modem or craft interface terminal (CIT) connected to any
shelf in that bay.
Power Circuitry 7
The SYSCTL receives two sources of −48 volts which are diode ORed, fused, and
filtered prior to conversion to a +5 volt source to power the rest of the circuit pack.
A failure of the fuse or converter causes the red FAULT LED to light.
BBG8/BBG8B SYSCTL Hardware Setting 7
The BBG8/BBG8B has two hardware switches, Switch 1 (S1) for Product
Identification (see Figure 7-3) and Switch 2 (S2) for TBOS Termination used with
Release 11.1 and earlier releases. Settings for S2 are not applicable for Release
13.0 and later releases.
Switch 1 (S1) Settings
Product Identification
VALUE S1-1 S1-2 S1-3
DDM-2000/
SLC -2000/
DDM-2000 FiberReach
OFF OFF OFF

Lucent Technologies DDM-2000 OC-3 Specifications

General

Brand	Lucent Technologies
Model	DDM-2000 OC-3
Category	Multiplexer
Language	English