I spent several hours searching most appropriate vendor and I stopped on https://www.clickatell.com/
To register account open mentioned url and go through following steps:
You can choose other options of course in case it would be more useful for you.
I checked my email box and I found an email from Clickatell with registration information:
I returned back to clickatell portal and logged in using provided credentials.
Open your CRM and import solution into it.
Once solution is imported open it and choose Configuration settings, fill all available fields and click Save.
Fill field in one of available entities with mobile number.
SMS has to be delivered to you soon.
All types of deployments are supported. One requirement - CRM Server has to have direct connection to an Internet.