All Services Engineering & Architecture VoIP, webrtc, SIP, Asterisk, Telephony $20/hr · Starting at $100 I have experience over carrier level system design for telecom companies. VoIP, GSM, WebRTC, Asterisk, Telephony, Billing System, complete telephony system design, IVR system design, System end to end testing, network design, AWS. About $20/hr · Ongoing Download Resume I have experience over carrier level system design for telecom companies. VoIP, GSM, WebRTC, Asterisk, Telephony, Billing System, complete telephony system design, IVR system design, System end to end testing, network design, AWS. Skills & Expertise Amazon AWSAsteriskBillingDesignNetwork DesignNetworkingSipSystems EngineeringTelecommunications SystemsTelephonyVoIP 0 Reviews This Freelancer has not received any feedback. Browse Similar Freelance Experts DesignersNetworking ProfessionalsTelephony ServicesTelecommunications Systems ManagersBilling ServicesVoIP ServicesAmazon Web Services (AWS) ExpertsNetwork Design Consultants