Overview

LTPH-UM-1088-02, Issue 2

 

 

BACKPLANE

RJ-45 Ethernet

DS3 or STS-1

DB-9 craft port

10/100BASE-T

connectors

connector

connector

 

Line 1

-48 Vdc battery supply

Line 2

screw connectors

 

 

 

(common access panel)

Tx

Rx

Tx Rx

 

 

 

 

RTN B]

 

 

 

-48 B

 

 

 

RTN A

 

 

 

-48 A

 

 

 

FGND

 

 

 

Craft

 

 

 

RS-232

32-pair (female) connectors - T1, E1

 

Chassis ground

(left Rx, right Tx)

BITS A and B, test access

 

 

(visual, audible, and discrete

 

 

 

ESD strap input

 

alarm wire-wrap pins)

 

 

Figure 1. Backplane Interfaces (rear view)

The ThinMux chassis provides a compact 1U platform for the ThinMux family of multiplexers with the following interconnects:

•One 10/100BASE-T Ethernet (IEEE 802.3)

•Two 64-pin female receptacle connectors for T1/E1 transmit/receive, chassis-shielded

•Four 75Ω BNC connectors for DS3/STS-1 transmit/receive

•Four wire-wrap 0.045-inch pins for Building Integrated Timing Supply (BITS) A and B

•Four wire-wrap 0.045-inch pins for T1 or E1 test access, transmit/receive

•Four wire-wrap 0.045-inch pins for Visible (VIS) and Audible (AUD) alarms (dry relay contacts) which are normally open (NO) discrete alarms

•Five wire-wrap 0.045-inch pins for discrete alarms (solid sate relay contacts): Far End, Minor, Major, and Critical

•Five screw connectors for -48V dual power

•One DB-9 connector for RS-232 communication

2

January 3, 2002

ThinMux Chassis