ADTRAN TRACER 2xT1, User Manual

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TRACER 2xT1 User’s Manual
61280003L2-1B
Section 3 Operation
24 Preliminary
With the advent of microprocessor technology, the alarm processing remote (APR, alarm remote or
simply Remote) was developed, allowing discrete alarm links with network elements to be supplanted by
a more efficient serial link. TBOS is the communications protocol defined for this link.
The TRACER rear panel designates the TBOS ports as “MANAGEMENT IN” (on the bottom) and
“MANAGEMENT OUT” (on the top). The TBOS polling station is connected to the MANAGEMENT
IN port. If several devices or TRACER systems are daisy-chained together, plug the TBOS manager into
the first units MANAGEMENT IN port (that physical unit does not have to be assigned TBOS address
#1), and then connect that units MANAGEMENT OUT to the next units MANAGEMENT IN port.
Follow that routine down the line, up to 8 units.
TBOS operates via RS422, therefore the inputs and outputs are differential pairs. The pinout for the
MANAGEMENT IN port is:
pin 1 - Transmit- (out of TRACER)
pin 3 - T (out of TRACER)
pin 5 - Receive- (in to TRACER)
pin 7 - (in to TRACER)
The pinout for the MANAGEMENT OUT port is:
pin 1 - Receive- (in to TRACER)
pin 3 - (in to TRACER)
pin 5 - Transmit- (out of TRACER)
pin 7 - T (out of TRACER)
The rear panel connectors are on a double-stack RJ45, so the pin numbers are opposite of each other:
A TBOS monitoring system will need to define the following bitmaps to indicate status and alarm
conditions.
Figure 3-1. Rear Panel Connectors
_______
| |
______| |______
| |
| |
MANAGEMENT OUT
| |
| |
(TOP CONNECTOR)
| |
PIN 8
|_|_|_|_|_|_|_|_|_|
PIN 1
___________________
PIN 1
|_|_|_|_|_|_|_|_|_|
PIN 8
| |
| |
MANAGEMENT IN
| |
| |
(BOTTOM CONNECTOR)
|_____ ______|
| |
|____|