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Pinouts and cables for telecomms
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TIPS MISCELLANIOUS INFORMATION
 
This page is for miscellanious information which does not seem to fit anywhere else or is so seldom used it is easily forgotten!
 

Tip No 1 RJ45 Connection for G.703
The following pinouts are used to present G.703 / 2Mb to a customer on balanced 120 ohm RJ45 connectors .
RJ45 PLUG DIRECTION G.703 - 120 Ohm   To MCP
PIN COLOUR ORKIT 15 Pin MARTIS 9 Pin   ORKIT 9 Pin
1 WHITE TX -> 1 1   1
2 ORANGE TX -> 9 2   6
4 WHITE <- RX 3 4   3
5 BLUE <- RX 11 5   8
 

TIP NO 2 AFLU BOTH WAY LOOP PREVENTION
 

AFLU LOOPBACK TO CUSTOMER PREVENTION

WALL MOUNT AFLU CUT TRACKS FROM
SWITCH 1(SW1) PIN 6 TO PIN 21
SWITCH 1(SW1) PIN 3 TO PIN 18

SHELF MOUNT AFLU CUT TRACKS FROM
SWITCH 1(SW1) PIN 6 TO PIN 18
SWITCH 1(SW1) PIN 3 TO PIN 13
 

TIP NO 3 MARTIS RJ45 ADAPTER
 
The new Martis STU-320 come with a 9 Pin to RJ45 adapter which requires a rollover UTP 10BaseT cable as follows :
RJ45 RJ45 MODEM END   RJ45 CUSTOMER END
1   3
2   6
3   1
4   4
5   5
6   2
7   7
8   8
 
 

TIP NO 4 2MB AIS DETECTION
 

TO IDENTIFY THE TRANSMIT FOR 2MB CCTS ON THE DDF PUT A LED ACROSS CENTRE AND OUTER . IF THE LED ILLUMINATES THIS IS TRANSMIT IF NOT IT IS RECEIVE.

THE SIDE WHICH LIGHTS UP IS THE TRANSMIT OUT WHICH HAS A SQUARE WAVE AIS OF .775 VOLTS WHICH IS SUFFICIENT TO LIGHT THE LED WITHOUT BLOWING IT OR DAMAGING THE TRANSMITTER.
 

TIP NO 5 VCM to DASSNET 532 Control Port
 
VCM CARD
IN MARTIS		 DASSNET
NODE
25Pin D-Type V.24
PIN 2 PIN 3
PIN 3 PIN 2
PIN 7 PIN 7
 

TIP NO 6 BASIC RATE REPEATER WIRING
 
         
  X 1   X 2  
         
    X 3    
         
    X 4    
         

PINS 1 + 2 ARE THE NT (Customer) SIDE = CABLE E1 - Pr 1

PINS 3 + 4 ARE THE LT (eXCHANGE SIDE) = CABLE O1 - Pr 2
 

TIP NO 7 TIMEPLEX NODES FOR LOTTO
 

TRUNK WIRING FROM LINE CARD TO VCM-5T OR ANY X.21 15PIN D-TYPE
TIMEPLEX
25 Pin D-Type		 X.21 Network
15 Pin D-Type
2 2
3 4
7 8
8 5
13 9
17 13
23 11
24 6
 

TIP NO 8 next tip
 
Contributions welcome!
 

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  If you find this useful and have information to add email Martin Ryan. All contributions , queries and constructive criticisms are welcome.  
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