B. Description of System Interfaces
B.1. Input Ports (PBX A, PBX B, AUX)
(DB9 Male; DTE)
Note: NLJ-VIP units do not include PBX Port B or the AUX Port.
Pin Signal
1 Data Carrier Detect (In)
2 Receive Data (In)
3 Transmit Data (Out)
4 Data Terminal Ready (Out)
5 Signal Ground
6 Not Connected
7 Ready to Send (Out)
8 Clear to Send (In)
9 Not Connected
Figure B.1: Data Input Ports (P{BX A, PBX B & AUX)
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