System Connectivity; System And Power Ground; Timing; Network Interfaces - ADTRAN Total Access 3000 System Manual

3.

SYSTEM CONNECTIVITY

The multifunction single backplane is the key element in system versatility. It contains
all I/O connectors, control and signal routing, power input and ground, plus the
interconnections between access modules, multiplexer cards, and the SCU. There are
also facilities for plug-in modules and wire-wrap pins for special purposes.
See Figure 4.
Refer to Figure 4, (page 9) the Total Access 3000/3010 Backplane, to identify the
locations of the following:

3.1 System and Power Ground

Flag A. Power Connections
The system is designed to accommodate redundant power configurations. Dual
Terminals for -48V and return are provided. The system will operate with either
individual supply or both supplies functioning.
Flag B. Frame Ground
Copper terminal block is provided for frame ground.

3.2 Timing

Flag C. Timing Input
Total Access 3000/3010 operates in local, loop, or external timing modes. For external
timing modes, the unit accepts an optional daughterboard to terminate a 64K
composite clock at C1 and routes the timing signal to all modules. For SONET
applications, the shelf terminates primary (C2) and secondary (C3) DS1 1.544M
clocks and delivers the signal to the MUX common cards.
Flag D. Output Clock
Two external DS1 clock outputs allow Total Access 3000/3010 to source time other
communication devices. The shelf provides two output clock sources when a
multiplexer that supports this feature is installed.

3.3 Network Interfaces

Total Access 3000/3010 can accept DSX and MUX signals simultaneously.
Flag E. Multiplexed Network Access
The high-speed multiplexed interface (DS3 or STS-1) is available through standard
coax cable connections. A BNC adapter, P/N 1181004L1, is required. All fiber
contectivity is accessed through the faceplate.
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Total Access 3000/3010 System Manual
TOTAL ACCESS 3000/3010
NOTE
6TASYS101-1E
SYS-101
Page 9 of 46
© 2003, ADTRAN, Inc.