Hi Xavier,

>Hi, 
>
>Doing a SMS gateway with perl or gnokii is really easy. Even Gnokii can have a look in a SQL database to get the data to send to sms. 

I don't know the project gnokii, i will to research more about it, but i don't have idea how to do it  be integrated with Observium and the alert be sending at exactly moment that there is a problem with some device. 


>The main problem is "IP SMS" gateway there is on the network. I understand observium team, and really using plain SMTP with 
>small messages can be better to be done than adding an extra code.

So, i understand about this main problem, but, not is necessary there is an "IP SMS" on the network, because with  a modem 3G/4G, we can send sms using the tool gsmssender [¹], together with nagios[²],

[¹]http://manpages.ubuntu.com/manpages/natty/man8/gsmsendsms.8.html

[²]https://securfox.wordpress.com/2009/03/30/how-to-configure-nagios-to-send-sms-to-your-mobile/

Regards

-- 
Welisson Tomé
br.linkedin.com/in/welissontome/