Chapter 1 – Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem CDMA Wireless Modem User Guide
10
RS232 15-Pin Connector Pinout
10
11
6
1
5
1 5
PIN
EIA
CCIT
Designation
RS-232
1
DCD
109
Data Carrier Direct
6
RX
104
Receive Data (out)
2 TX
103 Transmit
Data
8
DTR
108.2
Data Terminal Ready
9 GND
Signal
Ground
7
DSR
107
Data Set Ready
12
RTS
105
Request to Send
11
CTS
106
Clear to Send
13 RI
125
Ring
Indicator
Audio 4
MICROPHONE
(+)
5 MICROPHONE
(-)
10 SPEAKER
(+)
15 SPEAKER
(-)
Boot
3
BOOT
For factory use only.
Reset
14
RESET
To reset, connect to GND momentarily (typical:
20mSec). Open for normal operation.
AT Command Information
AT commands for the CDMA wireless modem are published in a separate Reference Guide included on the
MultiModem CD and posted on the Multi-Tech web site.
IP commands for CDMA modems are also published in a separate Reference Guide included on the MultiModem
CD and posted on the Multi-Tech web site.
