Appendix C - Connector Pinouts
C-1
Appendix C - Connector PinoutsPhone Jack Pinouts
The Omni 288S is equipped with two RJ11 phone jacks:
1. one for the dail-up line connection (LINE)
2. one for an optional connection to a phone set (PHONE)
The signals for these pins are:
1A
2 RING
3 TIP
4A1
The signals A and A1 are used with the KTS (Key Telephone Systems).
PC Serial Port Pinouts
Signal
Pin ITU-TSS
Signal Name EIA
Signal Name Pin/Signal
Description Direction
DTE-DCE
1 101 AA Protective Ground (GND).
2 103 BA Transmitted Data(TXD). →
3 104 BB Received Data(RXD). ←
4 105 CA Request To Send (RTS). →
5 106 CB Clear To Send (CTS). ←
6 107 CC Data Set Ready (DSR). ←
7 102 AB Signal Ground (GND).
8 109 CF Data Carrier Detected
(DCD). ←
15 114 DB Transmit Clock Signal
(source: DCE). ←
17 115 DD Synchronous Receive Clock. ←
18 141 Local Analog Loopback Test. →
20 108/2
108/1 CD Data Terminal Ready (DTR).
Connect DCE to line →
21 140 Remote Digital Loop Test. →
22 125 CE Ring Indicator(RI). ←
24 113 DA Transmit Clock Signal
(source: DTE). →
25 142 Test Indicator. ←