Just a follow-up and clarification on my previous problems with modem
initialisation.
I can get the Palm software modem to work using this init string, with no
other changes:
AT&F\rATV1 X4 &C1 +CREG=0
The embedded CR means this is really 2 commands, which kicks the modem into
actually responding!
I did this by binary patching the NetworkManager binary as it was more
expedient than re-building from source (I don't have a dev. environment on
this machine etc. ...). Hence the string omits E0 and +FCLASS=0, which for
this modem are defaults. It wouldn't have a problem if they were included.
It *does* need +CREG=0, as it defaults to +CREG=1.
I used AT&F rather than ATZ, as it is probably more reliable. Technically
ATZ resets to settings previously stored using AT&W, whereas AT&F is a full
reset. If a modem doesn't support storing settings I guess it's arguable
whether it needs to support ATZ. And if it does, it's not possible to
guarantee what the stored settings are.
The modem software is "USB Modem" by Mobile Stream. I've been in contact
with them regarding the delayed response to initialisation but they can't
currently reproduce it. It also doesn't show up if it's connected to
Windows, so I'm not over-optimistic that it will be fixed. It may possibly
be an issue with the Linux ACM driver.
HTH (I'd still prefer the init string to be definable - or overridable -
externally :)
Rick
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