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Cable DiagramsPassport 4400 Hardware Installation Manual
A-8
Figure A-6. Cable NTAU27AA - Passport 4430, 4450, 4455 to DTE Equipment
NC NC
15-Pin
X.21 Female
To Data Terminal
Equipment (DTE)
50-Pin Male
20 2 Transmit Data A
Receive Data B 45 9 Transmit Data B
Control A 8 5 Internal Clocking A
Control B 33 12 Internal Clocking B
Transmit Data A V11 6 4 Receive Data A
Transmit Data B V11 31 11 Receive Data B
Indication A 22 3 Clocking A
Indication B 47 10 Clocking B
7 6 Signaling A
32 13 Signaling B
Ground 43 8 Ground
1
Ground 26
2
Ground 27
Cable Present Status
Ground
Frame Ground
14
39
1
To Passport Data Terminal
Equipment (DTE)
Cable Type A
Cable Type B
Receive Data A
External Receive Data Clock B V11
External Receive Data Clock A V11