All Services Programming & Development VoIP Professional $40/hr · Starting at $40 VoIP professional with 10 years experience. Certified and trained in Nortel and Mitel. Highly experienced in open source PBX such as SipXecs About $40/hr · Ongoing Download Resume VoIP professional with 10 years experience. Certified and trained in Nortel and Mitel. Highly experienced in open source PBX such as SipXecs Skills & Expertise Open SourcePBXVoIP 0 Reviews This Freelancer has not received any feedback. Browse Similar Freelance Experts VoIP ServicesOpen Source Developers