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.
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