Issue 5     November 2000   
363-206-208
Powering, Verification, and Circuit Pack Installation for the DDM-2000 OC-12 Multiplexer
Lucent Technologies - Proprietary
See Notice on first page
‡  TBOS is not available in OC-12, Release 7.
SYSCTL Switch 2 sections 1 and 2 Notes: 
1. The TBOS terminator is the physical termination of the telemetry daisy-chain. Set the TBOS terminator for 
“last” (switch 2 section 1 to ON and section 2 to OFF)  if the shelf is the last shelf position on the telemetry 
daisy-chain at the CO, where the initial link is made.
2. Set the TBOS terminator for “not last” (switch 2 section 1 to OFF and section 2 to OFF) if the shelf is not the 
last shelf on the telemetry daisy-chain. 
3. Set all RT applications as “not last” (switch 2 section 1 to OFF and section 2 to OFF). 
SYSCTL Switch 2 sections 3 and 8 Note: 
1.  For DDM-2000 OC-12 applications, switch 2 sections 3 through 8 must be set to the OFF position.
Figure 5-4 (Continued). BBG8 SYSCTL Option Switches (Sheet 2 of 2) 
Switch 2 Settings
TBOS‡ Terminator
Shelf Location Sec 1 Sec 2
Last ON OFF
Not Last OFF OFF
Switch 2 Settings (Cont.)
Product Type Sec 3 Sec 4 Sec 5 Sec 6 Sec 7 Sec 8
FiberReach Wideband Shelf ON ON ON ON ON ON
All other applications OFF OFF OFF OFF OFF OFF