Lucent DDM-2000 OC-3 User And Service Manual page 865

363-206-285
Issue 2, February 2000
!
1.
CAUTION:
In addition to primary lightning protection, an external Lightning and
Surge Secondary Protection Assembly (ED-8C783-30 or equivalent) is
required for T1EXT circuits used in outside plant applications.
NOTE:
DS1 line coding may be set using either the option switches OR the
set-t1: command. It is recommended that a policy be established to
set line coding using either the switches OR the command. If DS1 line
code (lc) parameters are set using the set-t1: command, a software
override will be active and the circuit pack switch settings will have no
effect. The software override will remain active until the set-t1:
command is executed again and the noOverride option is selected.
The rtrv-t1: command may be used to check line code settings.
Refer to Table A and Figure 1 and set the line code option switches, if required.
Table A – T1 Line Code Settings
Line Code
Format
B8ZS
AMI
Note: Switch 1, section 3 (S1-3), section 4 (S1-4), and section 5 (S1-5) are
unused and must be set to OFF.
Edge
Connector
Install T1EXT Circuit Packs
Switch S1 Settings
S1-1 S1-2
(Port 1) (Port 2)
OFF OFF
ON ON
Component Side
Figure 1 – BBF6 T1EXT Option Settings
DDM-2000 OC-3 M
Detailed Level Procedure:
S1-3 S1-4
(Unused) (Unused)
OFF OFF
S1
ULTIPLEXER
DLP-517
Page 1 of 2
S1-5
(Unused)
OFF
ON
1 2 3 4 5
OFF