363-206-204
Powering, Verification, and Circuit Pack Installation
Issue 9 October 1998
4-15
Other Circuit Packs
BBF5 (Jumper) Circuit Pack
The BBF5 (jumper) circuit pack is required only for DDM-2000 OC-3 shelves (prior
to Group 4) with 27G-U / 27G2-U OLIUs in both slot positions of a function unit
group.
1. Place, but do not fully install, the BBF5 circuit pack in the low speed group
protection slot 8(P) associated with the function unit group where 27G-U
OLIUs are equipped or in protection slot 8(P) and slot 4 where 27G2-Us
are equiped.
NOTE
:
BBF5 circuit packs are not required for Group 4 shelves.
NOTE
:
The BBF5 is NOT required when a single slot of a function unit pair is occu-
pied by a 27G-U or 27G2-U (such as host nodes for a dual homed Fiber-
Reach application).
BBG6 (STS-1E) Circuit Pack
The BBG6 circuit pack (Releases 6, 7, 8, 9, 11 and 13) is used to provide
bidirectional transport of one EC-1 signal through the DDM-2000 Multiplexer.
The BBG6 circuit pack has two option switches:
â–
High/Low speed switch where the STS-1E high speed mode inter-
faces with the DS1 circuit packs in a function unit group at the VT-G
rate. STS1E low speed mode interfaces with the OLIU circuit pack at
the STS-1 rate.
NOTE
:
The BBG6 (STS1E) high speed mode is only available with Release 6.0 or
higher
linear
systems.
â–
Line build out switch (distance to DSX or terminating equipment)
1. Set the BBG6 circuit pack option switches as shown in Figure 4-18.
2. Place, but do not fully install, the BBG6 circuit packs into the shelf.
To Next Page
Loading...
Need help?
General
