Lucent Technologies MAX TNT - T1;PRI Cable Specifications; Figure B-1 RJ-48 C;RJ-48 C Crossover Cable; Table B-3 RJ-48 C;RJ-48 C Crossover Cable Specifications

B-4 MAX TNT Hardware Installation Guide
Cabling and Connector Specifications
T1/PRI interface specifications
T1/PRI cable specifications
The maximum cable distance between the T1/PRI WAN interface equipment and a MAX TNT
unit without CSUs should not exceed 655 feet (200m). Measure the line length and record it
when you install the MAX TNT unit. You must specify this length when you configure the
parameters in the line’s profile.
Use only cables specifically constructed for transmission of T1/PRI signals. The cables must
meet standard T1 attenuation and transmission requirements. The following specifications are
recommended:
• 100 ohm
• Two twisted pairs, Category 3 or better
The WAN interface cables and plugs described in the following sections are available for the
MAX TNT WAN interfaces.
T1/PRI crossover cable: RJ-48C/RJ-48C
Install the RJ-48C/RJ-48C cable when the WAN transmits on pins 5 and 4 and receives on pins
2 and 1. Table B-3 and Figure B-1 show the pinouts.
Figure B-1. RJ-48C/RJ-48C crossover cable
.
Table B-3. RJ-48C/RJ-48C crossover cable specifications
Pair # Signal Male RJ-48C Male RJ-48C
1 Receive 2
1
5
4
2Transmit5
4
2
1
1 RECEIVE
2 RECEIVE
RECEIVE 1
RECEIVE 2
4 TRANSMIT
5 TRANSMIT
TRANSMIT 4
TRANSMIT 5
Male RJ-48C Male RJ-48C