All Services Programming & Development VoIP/Phone systems $20/hr · Starting at $25 VoIP engineering and programming . About $20/hr · Ongoing Download Resume VoIP engineering and programming . Skills & Expertise AsteriskElastixEngineeringFreepbxProgrammingSipVoIP 0 Reviews This Freelancer has not received any feedback. Browse Similar Freelance Experts Computer ProgrammersSQL DevelopersDatabase AdministratorsTransmission Control Protocol (TCP) ServicesRaspberry Pi ProgrammersSystem AdministratorsMySQL DevelopersDNS ServicesSecurity ConsultantsLinux AdministratorsPython DevelopersDatabase DesignersArduino ProgrammersNetwork AdministratorsVoIP ServicesEngineersPHP Developers