| There
are 3 different integrated modems used in Toshiba Note PCs. |
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1.
|
Hardware Modem |
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|
Hardware Modem is mostly
integrated in the earlier models. It is recognized through
its serial port. It works with Linux without any trouble. |
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2.
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Software Modem (DSP
type) |
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It is the earlier version
of the software modem. Usage is made possible by downloading
firmware(F/W) in the DSP. It works with Linux with a driver. |
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3.
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Software Modem (sound
chip type) |
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This type of modem is
integrated in the later models. Conversion (Analog/Digital)
is done through the sound chip and everything is processed
in the CPU. This modem does not work with Linux at all. |
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About releasing development
information for software modem (sound chip type)
|
| |
In order to connect
a modem to a line, authorization (the line specification)
in its country must be obtained. For the case of hardware
modem, authorization
was obtained by the modem chip (IC). For the case of DSP type
software modem,
the authorization was obtained by the combination of DSP chip
(IC) and the F/W.
Authorization for the sound chip type software modem was obtained
for Windows use,
and in order to obtain additional authorizations (supported
by most countries
just like the one for Windows) for Linux, it requires tens
of millions of yen,
and at least 6 months of processing time. Therefore, considering
it from a
business stand point, TOSHIBA is unable to achieve this issue.
It is against the law to use the modem without the above explained
authorization.
Therefore, TOSHIBA is unable to release any document for the
development purpose.
If you have the software modem (sound chip type) integrated
in your TOSHIBA
note PC, please use the external modem with serial port connection,
or the
PC card type. Also, please keep in mind that some of the PC
card modem
is software modem which would not work with Linux. |
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