Hello there, Thanks for the job post,this is Joel Stewart from kenya, I have read your project description well and seems I am the best freelancer for this task for I an expert in Linux, Asterisk PBX, VolP, PHP and software architecture. I have over 5+ years solid experience in freelancer online writing therefore very much confident I will hit your expectations on time and as per your budgets.
Waiting to hear from you so we discuss in details,
Thanks, Joel.