Greetings I would like to know if you could help me send SMS from a dialplan using any provider
Not using any provider but the SMS application, this application handles calls to/from text message capable phones and message centres using ETSI ES 201 912 protocol 1 FSK messaging over analog calls.
https://wiki.asterisk.org/wiki/display/AST/SMS
Others SMS carrier allows to send SMS using a web service
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manin yo lo conozco del gym de kiko
the world is really small, but Internet is even smaller 
You can usually use the CURL function if your provider has an http interface.