UH683 Series Modem User Manual
E
‐
Lins
Technology
Co.,Limited
Add:
Bld22.,
Longxi
Garden,
Nonglin
RD.,
Futian
District,
Shenzhen,
518000,
China
Tel:
+86
‐
755
‐
83700465
E
‐
mail:
www.szelins.com
Chapter4
4 Configure directory
4.1 About SMS
How to used SMS:
Please follow the SMS User Manual
4.2 About CSD
4.2.1 Introduce CSD
CSD (Circuit Switched Data) is 9.6kbps speed circuit Switched Data from GSM network,
GSM+2 operations could attainability 14.4kb/s speed. and encrypts the data at the same time, so the GSM
system has the encryption function. It can connect with the line Modem,
4.2.2 Getting started
z
Connect two modems with each two computers” cable and open up Hyper Terminal
z
Setting Modems baud rate 9600bps
z
Register the CSD function. if you used this function, the SIM card have Register CSD. Dredge CSD
Function usually have two number. one is “pn” for voice message .and other is” un” for date message
4.2.3 Mutuality command
4.2.3.1 Generally command
ATD136****** //make
call
ATA
//answer a call
+++
//Switch from date mode or PPP online mode to command mode
ATO
//Switch from command mode to data mode or PPP online mode
ATH //Disconnect existing Connection
