[asterisk-users] is possible to sen sms with asterisk in Spain?

[Anselm Martin Hoffmeister]

Am Donnerstag, den 09.07.2009, 11:26 +0200 schrieb ESGLinux:
> Hi all, 
> 
> 
> I´m a beginner with asterisk and I want to know if with asterisk I can
> send sms to a mobile, I´m on Spain, and I don´t know this can be a
> problem (with the operators...)

Hi,

the SMS code in Asterisk is - afaik - only for the landline type of SMS.
It can behave as landline-SMS capable phone (like some of the Siemens
Gigaset DECT devices, for example) and talk to a landline-SMS center
that will for a certain charge forward short messages to mobile phones.

It can also behave as landline-SMS center and talk to appropriate
phones.

As a background info, landline phones can recognize that a landline SMS
center is calling them by caller ID (which must be programmed, many
phones ship with the local companies' numbers preprogrammed) and will
not ring the bell but silently answer the line. The message transfer
works with 1200 baud modem-like analogue audio (even if the phone is an
ISDN device) - you can watch the actual message bytes on the Asterisk
CLI if you turn on debug, in some kind of simple protocol and some
8bit-to-7bit mapping.

It cannot directly talk to mobile phones: short messages are
transmitted out-of-band in the GSM networks, and the mobile operators
will not allow you direct access there. After all, short messages make a
hefty percentage of their income at a minimum percentage of
infrastructure usage.

The situation in Germany (and to my knowledge, in several other European
states) is that you can connect to a premium-rate landline-SMS center
and hand them a short message for relaying. As that is bound to cost
hardly less than using a mobile phone directly, it is not at all
interesting for me (ymmv). I prefer using one of those
web-interface-to-sms providers (mine can be used with wget from scripts
etc) and pay between 3 and 12 cents per message, depending on
destination country and "quality of service" selection. They have been
reliable for quite some time now, and I remember that landline-SMS was a
little too fiddly for my taste.

Regards
Anselm