X300 SIM Card Use

[Catmandhu]

I'm wondering about using the SIM card with my X300.

I put an active T-mobile SIM card in the slot under the battery and tried to dial up to my local ISP using the internal Sierra wireless modem.

I get an "Error 777: The connection attempt failed because the modem (or other connecting device) on the remote computer is out of order."

I went to the Sierra modem's properties in device manager and queried the modem and got a successful response so pretty sure the wireless modem is active and functional.

I am able to dial up to the ISP with an external USB modem no problem.

I can put the SIM into a mobile phone and use it with a full signal to the Tmobile network.

Any suggestions on what might be the problem?

Should I be able to pop in any SIM and use the internal modem to call an ISP?

Are there some compatibility issues I'm unaware of?

Thanks for any help/suggestions.

Sean

[andyP]

It maybe because it needs access authentification. In Germany, not using T-Com software 'cos it's terrible, I always set up a profile in Access Connections with the following authentification;

User Name: t-mobile
Password: leave blank as the SIM PIN Nr. is required beforehand
APN: internet.t-mobile

You might want to contact your provider and ask what needs to be entered in order to be able to connect in your country.