Re: detecting modems on USB

Hi,

just a tip: look how udev or devfs works.

With either one or other you should be able to get persistant names fÃŒr  
your modems.

Thanks,
Alex

Am 16.08.2006, 11:41 Uhr, schrieb fred <[email protected]>:

> perhaps this is not strictly a kannel question...YET!!
> but this is a developers list, and other people writing C code on linux  
> are
> here.
>
> In case you haven't got it yet, the way kannel modems are currently
> configured,
> by the device name, ie /dev/ttyUSB00 for example....
>
> now if you have many modems, and you happen to take one out, the usb  
> devices
> re-enumerate themselves.
> so the modem now that you have may no longer be the GSM for vodafone, for
> example, but telstra....
> kannel restarted and your screwed.......your now sending sms via telstra  
> at
> double the cost!!
>
> this is NOT what you want, because...
> Eg
> ..............
> group = smsc
> smsc = at
> smsc-id = 001
> ...........
>
> group = sendsms-user
> username = vodafone
> password = bar
> forced-smsc = 001
>
>
>
> so when sending to the vodafone modem, we are forcing the routing to  
> smsc-id
> = 001.
>
> this is perfectly acceptable with serial com ports and multi-com ports  
> like
> stallion etc,
> because the com ports do not change...unless you physically swap cables.
>
> but with usb, this is no longer reliable.
>
> So I am attempting to come up with a solution where
>
> group = smsc
> smsc = at
> smsc-id = 001
> modemserial = 10202020 ( or whatever...something that identifies the
> particular sim and/or modem)
>
> note this is a complete paradigm shift in how the modems are specficed to
> how kannel currently does it..
>
> so mate is this still  ":So this is not really kannel question:"
> ???
>
>
>
>
> ----- Original Message -----
> From: "Andreas Fink" <[email protected]>
> To: "fred" <[email protected]>
> Cc: "devel" <[email protected]>
> Sent: Wednesday, August 16, 2006 6:53 PM
> Subject: Re: detecting modems on USB
>
>
>>
>> On 16.08.2006, at 10:53, fred wrote:
>>
>> > I've played with code that enumerate usb devices,etc..but haven't
>> > figured
>> > how to associate the usb device
>> > with a /dev/ttyUSBnn device properly/correctly or how? ...don't
>> > know enough
>> > yet
>> > eg modem on device
>> > ls /proc/bus/usb/002
>> > 001  002
>> >
>> > the falcom modem is the 002 device,
>> >
>> > yet the serial device is attached to /dev/ttyUSB0.......
>> >
>>
>>
>> This is done by the USB driver. Kannel just uses a serial port given
>> by its config file.
>> So if you got a USB device which has a serial port, then its up to
>> the USB device driver to declare which port it will use.
>> So this is not really kannel question
>>
>
>
>



-- 
Thanks,
Alex