Dear,
I'm senior VoIP engineer with over 6 years experience on VoIP administration and development. I already worked with a lot customers to deploy both local pbx system and retail/wholesales VoIP provider system base on Asterisk, Freepbx, Elastix,.. so I think I can handle this job very well.
Could you tell me more detail about the requirement with SMS ?
What's the best way to communicate with you to discuss more ?
Sincerely,
Huy Nguyen