Nortel Networks Nortel Contivity Secure IP Services Gateway 2700 Manual de usuario descargar pdf (Pagina 94)

94 Appendix A Technical specifications

NN46110-311 02.01

The cable operates properly if you do not connect pins 3, 6, 7, and 8.

Table 30 provides the T1/E1 CSU/DSU cable pinouts for a straight-through

connection.

5 TXDA->RXDA wht/blu pair 1A 1

6 not used green pair 3B 6

7 not used wht/brn pair 4A 7

8 not used brown pair 4B 8

Caution: For crossover connections, do not use Ethernet cable. If you

use Ethernet cable the T1/E1 CSU/DSU does not work to specifications.

This condition can corrupt data.

Table 30 T1/E1 CSU/DSU cable pinouts for straight-through connection

Nortel termination Remote termination

Signal Pin # to Pin # Signal

Receive A (RXDA) 1 1 Receive A (RXDA)

Receive B (RXDB) 2 2 Receive B (RXDB)

not used 3 3 not used

Transmit B (TXDB) 4 4 Transmit B (TXDB)

Transmit A (TXDA) 5 5 Transmit A (TXDA)

not used 6 6 not used

not used 7 7 not used

not used 8 8 not used

Table 29 T1/E1 CSU/DSU cable pinouts for crossover connection (continued)

Standard-wired

end 8-pin male Signal name

Pair number

and conductor

Special-wired

end 8-pin male

1 2 ... 89 90 91 92 93 94 95 96 97 98 99 ... 107 108

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Nortel Networks Nortel Contivity Secure IP Services Gateway 2700 Manual de usuario Pagina 94