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
Switch 2 sections 1 through 6 are used to control the identification of the DCC for open systems 
interconnection (OSI) interworking. For a given optical span, the network elements that terminate 
on each side of the optical span must have their
 network side / user side 
parameters set to oppo-
site values to avoid an inconsistent DCC switches alarm. Switch 2 Sec 1 thru Sec 6  are set to OFF 
for the Network Side and ON for the User Side of network elements in an optical span.
NOTE:
Release 2 multiplexer software requires the BCP1 to be a series S2:3 or later, Release 3 
software requires the BCP1 to be series S2:4 or later.
NOTE:
Release 1 Multiplexer software and Release 1 and 2 Regenerator software, does not con-
tain the OSI feature and therefore Switch 2 should be set to the factory default  values 
shown in the following table:
For Release 2 systems, refer to Figure 5-6 on page 5-25 on the following page for an example sys-
tem configuration, noting the opposite values set at each terminating node. The effected switch 
settings are highlighted in bold type. Set Switch 2 settings according to work order or office 
records using this example as a guide. Switch 2 Sec 7 and Sec 8 must be set to ON.
NOTE:
OSI settings on DDM-2000 OC-3 shelves are located on the BBG7 OHCTL. 
For Release 3 Ring systems, since OLIUs are connected main-b-1 of one node to main-b-2 of 
another node,  the Switch 2 factory default settings shown in the above table will be correct for 
each DDM-2000 OC-12 shelf in the ring. However, for Release 3.1 Rings systems containing OC-
3 optical extensions, Switch 2 Sec 3 thru Sec 6  must be set to values opposite than the values of 
the corresponding OSI settings on the BBG7 circuit packs of the  DDM-2000 OC-3 terminating 
nodes. Switch 2 Sec 7 and Sec 8 must be set to ON.
For all Multiplexer and Regenerator Releases, Switch 3 Sec 1 thru Sec 8 are set to ON.
Figure 5-5 (Continued). BCP1 OHCTL Option Switches (Sheet 2 of 2)
Switch 2 Settings for Linear Applications
main-a Sec 1 main-b Sec 2
fn-a 
Sec 3
fn-b 
Sec 4
fn-c 
Sec 5
fn-d 
Sec 6
Sec 7 Sec 8
OFF ON OFF OFF OFF OFF ON ON
Switch 2 Settings for Ring Applications
main-b-2  
Sec 1
main-b-1  
Sec 2
fn-a 
Sec 3
fn-b 
Sec 4
fn-c 
Sec 5
fn-d 
Sec 6
Sec 7 Sec 8
OFF ON OFF OFF OFF OFF ON ON