Technical Specifications |
RS-232-D pin assignments
The asynchronous
Pin # | Pin Name | Signal Direction |
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1 | Shield Ground (GND) | — |
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2 | Send Data (SD) | To ISDN modem |
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3 | Receive Data (RD) | From ISDN modem |
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4 | Request to Send (RTS) | To ISDN modem |
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5 | Clear to Send (CTS) | From ISDN modem |
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6 | Data Set Ready (DSR) | From ISDN modem |
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7 | Signal Ground (GND) | — |
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8 | Carrier Detect (DCD) | From ISDN modem |
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18 | Local Loopback | From ISDN modem |
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20 | Data Terminal Ready (DTR) | To ISDN modem |
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21 | Remote Loopback | To ISDN modem |
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22 | Ring Indicator (R) | From ISDN modem |
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