The customer provides hosted SBC solution in a cloud, SBC is like a SIP firewall that can block attacks even before they reach the customer network . The service protect SIP based PBX, by routing remote calls (remote extensions, sip trunks and incoming DID numbers) via the SBC, the calls can be monitored, analyzed and alert on real time. Subscribes can define a list of rules for every call or sip traffic passing through the SBC to his PBX. The service enable the customer to open his firewall only to sip-protect service, so his server is always protected behind the
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Archives for custom development
Disposable number
The customer provide a disposable/second number for incoming/outgoing/SMS, for privacy/business. For this project we’ve build a registration server, load balancer, media server and push services. The registration and load balancer was based on opensips platform, it handled registration from a mobile sip clients and load balanced incoming and outgoing calls through multiple media servers(asterisk). When a call request came in, we activated a web service to check the end-user preferences, if he allow incoming calls based on caller-id or time of day, and if so, perform a push notification to the endpoint and then route the call in.
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Roaming and caller-id unblocking
Caller-id un-blocker/roaming solution. The platform was based on opensips loadbalancer, registrar server and asterisk cluster. The platform designed to auto-scale(up and down) based on load, and included a push server for the mobile sip clients.
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MVNO mobile provider
MVNO self service and network announcements. The scope was to build high availability self service IVR and network announcements. The platform was based on master-master mysql server, two opensips servers for load balancing and sip error mapping and asterisk servers. We’ve built a fully redundant network without a single point of failure. The service designed to serve as a self-service by phone, customers are calling to the platform and can listen to their current balance(voice, sms, data), can purchase a new plan, when all actions are performed in real time via API to the billing platform. We made the API
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Voip application server
Scalable and redundant telephony apps cloud. The customer provide a unique solution for providing voice applications like trivia games, message board and a “what’s up” like voice application. The platform included a billing system for outgoing and incoming calls, sip load balancing and voice application servers. The system was capable of handling hundreds of simultaneous calls, perform billing per call-in and out, DID billing and revenue share. The application server included functions like multi channel conf rooms, voicemails, forwarding to landline, ring groups, API to external services, voice announcements, multi level IVR, survey, calls broadcast and more. The platform was
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Global roaming
The customer provide a unique roaming solution based on virtual numbers and a mobile application over a cellular network. Docker based platform. For this project we’ve built a full docker platform, separating the web, database, opensips and multiple asterisk servers to stand-alone containers. The platform is serving service providers to lower roaming costs using sip application and push notification. The system has a full call control API, each incoming call was controlled using external API,including hold, answer, indicate ringing, hangup, etc.
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International and PBX voip provider
The customer provides virtual numbers, hosted PBX, and voip application services. The customer had a multi-server environment, We provided 3’rd level support to the NOC and dev team, consulting in general structure and flows. In addition, we provided the customer a load balancing platform that balances between sip providers and voip application servers.
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MNO – mobile provider
The customer is one of the leading mobile operator in Israel. Presence server. The customer had an old SIP platform with no presence support. We’ve built two services, an API service and an opensips sip presence server. Together with the customer dev team we built an API that get notifications from the core SIP server and push them to an opensips server. The opensips server handled all the subscriptions and notifications from the sip endpoints. When an endpoint boot up it subscribed to the opensips to get notifications(BLF) of other SIP endpoints, the opensips communicated with the API service and
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MVNO, international carrier, wholesale voip
In this project we’ve served as external CTO from the first days of the company. The customer was a Romanian MVNO and international voice provider. We’ve implemented a carrier grade billing platform and develop all the company products: Self made calling card platform based on asterisk and API to the billing platform. Sip clients(some developed in-house). hosted PBX solution for forex companies. We were in charge of building the company web site, accounting and invoicing platform(self made), implementation of credit-card processing including recurring services and alerting. As part of the web project we implemented mail campaign platform, voucher mechanism, ticketing
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PBX & call center provider
The customer is a leading on-premise and cloud call center provider. Design global routing platform in order to integrate multiple DID and voice providers and multi location PBX with carrier grade billing platform. The platform act also as an SBC, protecting the network from SIP scanners, brute force attacks, also providing a load balancing for outgoing traffic from PBX customers to the billing platform. Build “one click” PBX install script that take a clean linux OS and install all necessary applications, plugins, firewall scripts, mail, web and other internal applications. Design a multi-tenant PBX platform, working with the customer dev
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