Visara 1199 TWA Mux - Manual (Page 14)

2-4 707026-001
Chapter 2: Customer Installation
Communications Cabling
The 1199-T32/64 Multiplexer cards have two groups of 16 ports. Each group of 16 ports
uses a 25-pair, EIA/TIA-568, EIA/TIA TSB-36, Category 3 or better, UTP cable terminated
with a 50-position connector terminating typically to a common telephone wire punch-
down block. For RJ-21X connector pin to port number correspondence, refer to Figure
2.2.
1
26 50
25
TWA RJ21 CONNECTOR
PORT No. PORT No. TIP RING
0 16 26 1
1 17 27 2
2 18 28 3
3 19 29 4
4 20 30 5
5 21 31 6
6 22 32 7
7 23 33 8
8 24 34 9
9 25 35 10
10 26 36 11
11 27 37 12
12 28 38 13
13 29 39 14
14 30 40 15
15 31 41 16
42 17
43 18
44 19
45 20
46 21
47 22
48 23
49 24
50 25
CONNECTOR PINS
NOTE: 16 Ports per RJ-21
Connector. Ring connection
corresponds to 3270 coax
center conductor, Tip
connection to coax shield.
Maintain polarity for correct
operation.
CONTROLLER PORTS
Figure 2-2: RJ-21X Connector Pin to Port Correspondence