Lucent Technologies DDM-2000 OC-3 Installation Manual

4-44
Issue 9 October 1998
363-206-204
Powering, Verification, and Circuit Pack Installation
Notes
:
1. If the shelf is located in an RT, set the timing mode for "Loop-Main".
2. If the shelf is located in a CO and the DDM-2000 OC-3 is NOT connected to a DS1 clock
(J37 on backplane), set the timing mode for "free run".
3. If the shelf is located in a CO and the DDM-2000 OC-3 is connected to a DS1 clock (J37
on backplane), set the timing mode for "external".
4. The pulse format (AMI or B8ZS) and frame format (superframe or extended superframe)
are set for the attributes of the external clock if external timing is selected. In the absence
of DS1 clock information, set line code for AMI and frame format for superframe.
Figure 4-13. BBF2 TGS Option Switches
Switch 1 Settings
Line Code Selection Frame Selection Timing Mode Selection
Pulse
Format
Sec 1
Frame
Format
Sec 2
Timing
Format
Sec 3
Chan 1
Sec 4
Chan 2
AMI ON SF ON Free Run ON ON
External OFF ON
B8ZS OFF ESF OFF Loop-Main ON OFF
(Invalid) OFF OFF
S1
Component Side
Connector
Edge
Latch
43
S1
OFF
ON
21

Lucent Technologies DDM-2000 OC-3 Specifications

General

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