Q24Plus modem

I am testing with Q24Plus modem for GPRS Services.

Modem is installed with Standard 33600 bps modem.

While dialing it gets connected with network but immediately disconnets

Then modem status shows modem removed.

Why such problem? If any one has come across such issue please reply.

Does it work if you just do it “manually” - ie, issuing AT commands direct to a COM port with Hypoterminal or whatever?

Note that some service providers don’t support data calls on some subscriptions - are you sure that your SIM is correctly provisioned/configured/whatever for Data calls?