User Guide

T1
T1
RDTU Installation
Strata CTX I&M 06/04 8-7
Figure 8-4 Required Cables/Connectors for RDTU Connection at Distances of Less than 655 (200 Meters)
6565
Pin of one end to
of one end to of other end - each direction
To make a Cross-Pinned Modular Cord on a existing straight through cord:
On one end only, swap Pin 1 with Pin 5 and then Pin 2 with Pin 4.
of other end - each direction
Pin1
5
2
Pin
4
Pin
RJ45 Cross Pinning
T
R
T
R
T
R
T
R
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
18
Front Front
18
Bottom Side Up
Connector Head
1
2
3
4
5
6
7
8
Connecting two RDTU3 PCBs
RDTU3 RDTU3 or other
T1 interface
Strata CTX PBX or CTX
Cross-Pinned, RJ45 Modular Cord
Ferrite Core
(655 ft. max. CAT5 wire)
RJ45 JackRJ45 Jack
1
2
5
4
5
4
2
1
Pin Pin
T
R
RR
R
TT
T