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Cellular forums Home > Archive > Cell Phone Tech > May 2006 > Data Calls using wavecom fastrack modems
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Data Calls using wavecom fastrack modems
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| b.prashant@gmail.com 2006-05-12, 11:48 pm |
| I have some questions regarding wavecom GSM modems. I am right now
involved in a testing scenario where I have to connect two wavecom
modems through GSM data link (not GPRS). I have two prepaid GSM sim
cards for the two modems. I am using hyper terminal to communicate with
the modem through serial port. My testing scenario requires that on
one (PC) end I get data into one serial port and output it to the other
serial port (i.e. where the modem is connected). The other end is the
second modem (second PC) which would receive the data. This is the
setup.
I have two problems
1. I make a data call from one modem to the other. I get the rining
notification on the other end. But when i answer the call it shows that
there is no carrier and the call gets disconnected
2. I am not sure how to make the data transfer once the call is
established ( i.e. on the first PC, i have data in COM1 port and the
modem is connected to the COM2 port). Is there a way i can route the
data to com2 port once the data link is establihed?
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| Christen Fihl 2006-05-12, 11:48 pm |
| 1: Remember the tailing semicolon in the dial command, as far as I
recall.
AT D xxxx ;
Maybe also on the ATA; on the second gsm.
2: Your program, that does the dialing on com2 has to read com1 as well,
and send data between these two ports.
--
Christen Fihl
http://HSPascal.Fihl.net/
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| b.prashant@gmail.com 2006-05-12, 11:48 pm |
| Thanks for the reply Christen,
The first point, I gave the commands with the semicolon, even then its
the same result, no carrier.
The second point, I would like to know how this can be done (sending
data between two serial ports) is there any command for that?
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| Christen Fihl 2006-05-14, 5:48 pm |
| Data between 2 ports: You have to use some sort of programming, maybe a
script language.
Something like
while forever do
S = ReadDataFromPort1
SendDataToPort2(S)
S = ReadDataFromPort2
SendDataToPort1(S)
--
Christen Fihl
http://HSPascal.Fihl.net/
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