Echo issue on OM2008.08 solved

Angus Ainslie angus.ainslie at
Wed Oct 8 16:29:07 CEST 2008

On Wed, Oct 8, 2008 at 5:52 AM, Alastair Johnson <alastair at>wrote:

> GSM firmware will never be fully open unless national telecoms
> regulators decide to relax their rules. The GSM modem is in effect a
> separate device with its own firmware that we talk to through a serial
> interface. It just happens to be on the same board.

GSM firmware is usually closed due to national radio laws. If the firmware
were open it would be perceived a Software Defined Radio (SDR) which most
countries limit.

I'm sure the GSM manufacturers are perfectly happy to keep those
restrictions in place.

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