363-206-295
Shelf Descriptions and Configurations
3-4
Issue 1
December 1997
Table 3-1 lists the DDM-2000 OC-12 Multiplexer plug-ins.
As shown in Figure 3-1, the front view of the shelf is divided into seven functional
groupings:
■
Starting from left to right:
— MAIN
— TSI (Time Slot Interchange)
— TIMING (TG)
— AUXCTL
— USER PANEL
■
Continuing below the TIMING area:
— FUNCTION UNITS (FN)
— SYSCTL.
Table 3-1.
DDM-2000 OC-12 Plug-Ins
Product Code
Functional Name
Functional Designation
BBF2B
Synchronous Timing Generator
TGS
BBF4
Synchronous Timing Generator 3
TG3
BBG11/11B
∗
Triple DS3
3DS3
BBG12
Triple EC-1 Interface
3STS1E
BBG8
System Controller
SYSCTL
BCP3
Time Slot Interchange Flex
TSI FLEX
BCP4
Overhead Controller
OHCTL
21D-U
IS-3 OLIU
OLIU
21G-U
OC-3 OLIU
OLIU
23G/23G-U
OC-12 OLIU
OLIU
23H/23H-U
OC-12 1550 nm OLIU
OLIU
177B
Apparatus Blank (8")
APPBLK
177C
Apparatus Blank (12")
APPBLK
∗
BBG11B DS3 circuit pack is required for enhanced DS3 performance
monitoring.