All Services Programming & Development Voip Programmer $5/hr · Starting at $25 top expert in SIP, and VOIP media tunneling. Have written dozens of VOIP apps, and even built VOIP hardware from scratch About $5/hr · Ongoing Download Resume top expert in SIP, and VOIP media tunneling. Have written dozens of VOIP apps, and even built VOIP hardware from scratch 0 Reviews This Freelancer has not received any feedback.