Rs232 15-Pin Connector Pinout - Multi-Tech MultiModem MTCBA-C User Manual

RS232 15-Pin Connector Pinout

RS 232
Audio
Boot
Reset
5 1
10
6
1 5 11
PIN EIA
1 DCD
6 RX
2 TX
8 DTR
9 GND
7 DSR
12 RTS
11 CTS
13 RI
4 MICROPHONE (+)
5 MICROPHONE (-)
10 SPEAKER (+)
15 SPEAKER (-)
3 BOOT
14 RESET
10
Chapter 1 - Description and Specifications
CCIT Designation
109 Data Carrier Direct
104 Receive Data (out)
103 Transmit Data
108.2 Data Terminal Ready
Signal Ground
107 Data Set Ready
105 Request to Send
106 Clear to Send
125 Ring Indicator
For factory use only.
To reset, connect to GND
momentarily. Open for
normal operation.