ATZ in enabling_modem_init() step

[Tim Small]

On 25/07/17 12:47, Aleksander Morgado wrote:
> A quick solution would be to subclass the enabling_modem_init() step
> and after running the parent method, run a Telit specific setup to
> check #CSS? and if disabled due to the ATZ, re-set it, would that
> work?

I wonder if issuing ATZ is the right thing to do here at all?

It's trying to reset the modem to a well-known state, but ATZ doesn't do
that - it loads the default user defined profile - which could be
anything that the user or another piece of software has saved with AT&W.

Running AT&F1 once during/after probe might be better to get the modem
to a known state.

Even more complicated, having just checked the Telit modem CMUX user
guide - when in CMUX mode both the ATZ and AT&F commands are ignored, so
it would be necessary to issue AT&F before entering CMUX mode, but
neither would be an option after that.

Tim.

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