Does anyone know about text page programs for pagers?

Hi Users,

I am simply looking for a program to install on my computer that would allow me to send a text page to multiple pager numbers, preferably free, or not too expensive. I have an RCS pager by the way. If anyone having any suggestions regarding this, please share. I did not get any suggestion from my search so I think you will help me in this discussion forum.

Thanks and Regards,
Steven Dilley