363-206-305
Shelf Descriptions and Configurations
3-6
Issue 3 June 2000
Figure 3-8. DDM-2000 FiberReach Multiplexer Wideband Shelf — Rear View
As shown in Figure 3-1, starting at the far left, eight 4-inch slots are reserved for
service and protection low-speed interfaces. The DS1, DS1 PM, T1EXT, and low
speed interface circuit packs can be configured as 1x1, 1x7, and unprotected.
HDSL circuit packs can be configured as 1X2 or unprotected. Each circuit pack is
equipped with a fault Light Emitting Diode (LED) indicator.
The next two 8-inch slots are reserved for service and protection main OC-1,
OC-3, or OC-12 OLIU circuit packs. Each OLIU is equipped with both a fault and
active LED indicator. The OLIUs are located in the slots labeled Main-1 and
Main-2.
The next two 8-inch slots are for the Function Unit. The Function Unit became
active with FiberReach Release 3.1 using the 28-type OLIUs. With FiberReach
Release 4.0, the Function Unit slots will be active with any valid optics in the Main.
The Function Unit slots can be equipped as 0x1 or 1x1 protected. These slots are
reserved for broadband services such as OC-3, or for DS3 Services.
The next section of the shelf consists of two 8-inch slot reserved for control circuit
packs. The system controller (SYSCTL) slot is reserved for the SYSCTL circuit
J41
J40
J34
J33
J22
J53
J52
J51
J50
J23
J20
J42
BNC
CONNECTORS
OFFICE ALARMS
TERMINAL
BLOCK
FOR
POWER
-48V A
-RTN A
-48V B
-RTN B
* See ordering section for DS1 cabling details.
PROTECTION
BUS
MISCELLANEOUS
DISCRETES
J21
TBOS
FOR FUTURE USE
-48V BB
-48V RT
LS (A,B,C)
INPUT *
(37 PIN)
LS (A,B,C,D)
OUTPUT *
(37 PIN)
LS (A,B,C)
OUTPUT *
(37 PIN)
LS (A,B,C,D)
INPUT *
(37 PIN)
tpa 826717-01
DS3 OUT
DS3 IN
FUTURE
FUTURE
GND
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