All Services Other Network support Engineer $10/hr · Starting at $25 I have two years experience in 3CX VOIP. I can configure FXO,FXS,VOIP, PRI gateways and SIP IP phones. About $10/hr · Ongoing Download Resume I have two years experience in 3CX VOIP. I can configure FXO,FXS,VOIP, PRI gateways and SIP IP phones. Skills & Expertise EngineeringNetwork AdministrationNetworkingPhone SupportSession Initiation Protocol (SIP)VoIP 0 Reviews This Freelancer has not received any feedback. Browse Similar Freelance Experts VoIP ServicesEngineersNetwork AdministratorsNetworking Professionals