USB GSM Modem ?

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Per Laursen - 23 Oct 2004 19:37 GMT

Is anyone here aware of a GSM modem (dual-band will do) with a USB
interface - preferably powered via the USB ?
I've googled a bit, but the number of hits on "USB GSM MODEM" is quite
overwhelming.

Feel free to reply directly to me at
per dot laursen at mail dot dk

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John Navas - 24 Oct 2004 08:31 GMT

>Is anyone here aware of a GSM modem (dual-band will do) with a USB
>interface - preferably powered via the USB ?
>I've googled a bit, but the number of hits on "USB GSM MODEM" is quite
>overwhelming.

Any GSM phone with (a) a modem and (b) a USB connection.

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Best regards, HELP FOR CINGULAR GSM & SONY ERICSSON PHONES:
John Navas <http://navasgrp.home.att.net/#Cingular

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Per Laursen - 24 Oct 2004 09:50 GMT

> [POSTED TO alt.cellular.gsm - REPLY ON USENET PLEASE]
>
[quoted text clipped - 4 lines]
>
> Any GSM phone with (a) a modem and (b) a USB connection.

Um - yes - I sort of got to that point... I was thinking more of
'industrial-style' GSM modems (example: the Siemens units) - but with a USB
interface. It's a lot easier to interface 10 USB units than 10 RS232 units +
power supplies to a PC these days.

regards
Per

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John Navas - 24 Oct 2004 10:18 GMT

>> >Is anyone here aware of a GSM modem (dual-band will do) with a USB
>> >interface - preferably powered via the USB ?
[quoted text clipped - 7 lines]
>interface. It's a lot easier to interface 10 USB units than 10 RS232 units +
>power supplies to a PC these days.

The basic problem is that PCs expect modems to be on serial ports, not USB
ports, so when a USB cable is used, it's still a virtual serial port.

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Best regards, HELP FOR CINGULAR GSM & SONY ERICSSON PHONES:
John Navas <http://navasgrp.home.att.net/#Cingular

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Per Laursen - 24 Oct 2004 11:26 GMT

> >> >Is anyone here aware of a GSM modem (dual-band will do) with a USB
> >> >interface - preferably powered via the USB ?
[quoted text clipped - 10 lines]
> The basic problem is that PCs expect modems to be on serial ports, not USB
> ports, so when a USB cable is used, it's still a virtual serial port.

Virtual serial ports are OK - I do the PC software myself. Currently, I'm
interfacing the PC to GSM modems via regular RS232 ports, USB-to-serial
adapters and USB-to-Bluetooth. All I need is access to the AT-command
interface.

The USB-to-GSM just seems attractive (if available) because then I wont need
external mains adapters and a lot of cabling (yes, I know about the power
limitations of USB).

GSM modems with PCMCIA is a possible alternative, but requires PCI-to-PCMCIA
adapters and a PCMCIA card that allows me to place two of them adjacently.
The current model I have (OvisLink) is too thick at the prodtruding part to
allow this.

regards
Per

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John Navas - 24 Oct 2004 21:48 GMT

>GSM modems with PCMCIA is a possible alternative, but requires PCI-to-PCMCIA
>adapters and a PCMCIA card that allows me to place two of them adjacently.
>The current model I have (OvisLink) is too thick at the prodtruding part to
>allow this.

Sony Ericsson GC82 has no such protrusion.

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Best regards, HELP FOR CINGULAR GSM & SONY ERICSSON PHONES:
John Navas <http://navasgrp.home.att.net/#Cingular

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Alex Marufu - 19 May 2005 10:28 GMT

did you ever identify an appropriate product? We are setting up an SMS
service and have decided to use 10 USB modems connected via a USB HUB. I
panicked a bit when i read your concerns about power. Do you think this
would work?

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