User's Manual

ER-600 User Manual
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4) Meanwhile, ER-600 can receive and output SMSs from the user serial port, as
shown below:
Figure Appendix 8-3: Receive and output SMS via ER-600’s serial port
NOTE:
1) ER-600’s RS232 serial port is standard RS232 DB9 male interface, and if the
user device’s serial port is also DB9 female interface, use a standard RS232
female-male cable to connect ER-600 and user device, otherwise us
female-to-female cross cable to connect user device and ER-600.
2) Currently receiving long SMSs is supported, but sending long SMSs is not
supported, i.e. the length of messages in English cannot exceed 160 characters,
and the length of messages in Chinese cannot exceed 70 words.
3) AT commands must end with CR (0x0d), expressed below as “\r”.
The AT commands to send/receive SMSs are described in “Appendix 7:
Send/Receive SMS with ER-600’s Ethernet Interface and SMS F