
PortSIP PBX: when a phone system becomes part of the business application
Docker on your Linux host, Contact Center queues, WhatsApp, WebRTC clients and CRM APIs — without building a PBX engine from scratch.
Read article →Rescue traces
Production VoIP rarely fails in the brochure diagram. It fails in media path, NAT, codec negotiation, trunk authentication and the quiet hours when fraud scanners start dialing. This hub collects rescue traces—one-way audio, dead trunks, FreeSWITCH/Asterisk incidents and the debugging loops that turn a pcap into a fix. Use it when you need carrier-grade troubleshooting, not a protocol textbook. Related engines: FreeSWITCH, Asterisk and WebRTC client paths. When the incident is over, the same notes feed durable architecture for owned PBX and CCaaS platforms.
34 articles in this topic · page 1 of 3
Also explore: FreeSWITCH · Asterisk · WebRTC · Services

Docker on your Linux host, Contact Center queues, WhatsApp, WebRTC clients and CRM APIs — without building a PBX engine from scratch.
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Recently, I worked on a FusionPBX + FreeSWITCH call connectivity issue involving browser-based WebRTC extensions where one side of the call could hear audio while the other side…
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We didn’t “fix NAT.” We built a SIP.js diagnostic lab — and one-way audio started telling the truth. Most VoIP war stories end the same way: “It’s NAT.” “Change ext-rtp-ip.”…
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Looking for a modern, cost-effective business phone system? Looking for a modern, cost-effective business phone system? This video demonstrates a Linux-based IP PBX that runs on…
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3CX vs custom AI-powered CCaaS: when to configure a PBX, extend it with CRM and AI workflows, or build a multi-tenant contact-center product.
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A practical architecture comparison for teams choosing a telephony engine.
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A high-level architecture for connecting voice AI with SIP/telephony infrastructure.
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Key architectural concerns for tenant isolation, routing, provisioning and scale.
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┌──────────────────────────────────────────────────────────────────────┐ │ UnifiedPBX CCaaS/UCaaS Platform │…
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Comparing UCaaS, CCaaS, AI, telecom control, business workflows, TCO, industry use cases and hybrid architecture. When should communication be a standardized employee/customer…
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Every business needs customer communication. Not every business needs a million-dollar contact center. 1. Introduction Talk about the current market. Today every business wants…
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Most insurance software falls into one of two camps. There are CRMs built by people who understand insurance workflows — quotes, underwriting, policy issuance — but who treat the…
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