[gta02-core] GSM modem

[Werner Almesberger]

I wrote:
> That's a very good question, and one for which I haven't been able to
> find a good answer in the Telit documentation so far.

I think I found it. From
http://www.telit.com/module/infopool/download.php?id=542

| #PSMRI ­ Power Saving Mode Ring
|
| Set command enables/disables the Ring Indicator pin response to an
| URC message while modem is in power saving mode. If enabled, a
| negative going pulse is generated, when URC message for specific event is
| invoked.

URC = Unsolicited Result Code

There's also #E2SMSRI but #PSMRI seems more general.

- Werner