On Thu, 2014-09-25 at 16:37 +1200, Brent Brown wrote:
> Sending another message to the modem (while it is registered) results in =
the=20
> newest message being received immediately and older ones follow sooon aft=
er, so=20
> it seeminly "wakes" the network and stirs it into action, but that's not =
a workable=20
> solution. It's possible if the modem sends a message as soon as it regist=
ers that=20
> might also instigate reception of pending messages, but still would not b=
e an ideal=20
> method. At the moment I'm testing this out: poweron, register, send messa=
ge to=20
> self, receive own message, wait a few seconds and pending mesages come in=
,=20
> powerdown... seems to achieve the aim, but not a perfect solution (some c=
arriers=20
> may not allow message to self, wasting power sending extra messages, who =
pays=20
> for them, cell module doesn't appear to know it's own number etc).

I'm not sure I've EVERY encountered a carrier that doesn't allow one to
send a text to themselves, don't see why that would be a special case.
Obviously you're sending the text, so you'd pay for it?

In my experience, aside from sending a text, another way to "wake up"
the network is to issue a service request. This is completely carrier
specific, on one carrier I can issue a "balance query" by dialling *225
(*BAL). It's completely free and will stir things up.

You could look into something like the "call forwarding status" GSM
standard query requests, they may stir the network and are completely
carrier independent.

For example:
*#21#

http://www.geckobeach.com/cellular/secrets/gsmcodes.php


TTYL

--=20
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