https://sipral.org/blog/ Articles from the Sipral team: what a measurement showed, what we got wrong and corrected, and what the next release brings, with figures from the repository. en Fri, 16 Oct 2026 00:00:00 GMT https://sipral.org/blog/two-bugs-a-phone-left-on-found/ https://sipral.org/blog/two-bugs-a-phone-left-on-found/ A phone that stopped taking calls after four days, and a voicemail lamp that never moved on an older Asterisk. Both hid from short tests, and both are fixed. Sipral Fri, 16 Oct 2026 00:00:00 GMT https://sipral.org/blog/sipral-1-2/ https://sipral.org/blog/sipral-1-2/ Sipral 1.2 bridges PBX lines to voice agents, adds Node.js, .NET MAUI, OAuth2, SIP over WebSocket and a promised Rust API, and held a week of calls. Sipral Thu, 15 Oct 2026 00:00:00 GMT https://sipral.org/blog/an-agents-phone-on-vicidial/ https://sipral.org/blog/an-agents-phone-on-vicidial/ A call centre dialer uses a phone differently from a PBX. On a ViciBox 12, Sipral took the agent session call, heard the caller and passed a digit. Sipral Sun, 11 Oct 2026 00:00:00 GMT https://sipral.org/blog/a-day-of-calls/ https://sipral.org/blog/a-day-of-calls/ A 24-hour run held 476 calls with no error, but memory crept by 72 KB. A counting test found the leak behind it; the week-long run now starts on the fix. Sipral Thu, 08 Oct 2026 00:00:00 GMT https://sipral.org/blog/a-live-vitalpbx/ https://sipral.org/blog/a-live-vitalpbx/ On a live VitalPBX the callee heard nothing on four calls of six. The PBX changed the audio source mid-call; Sipral now follows it. Every call passes. Sipral Thu, 08 Oct 2026 00:00:00 GMT https://sipral.org/blog/a-local-voice/ https://sipral.org/blog/a-local-voice/ Sipral's local voice agent now speaks with Kyutai's Pocket TTS, streamed into the call, and starts its answer at the caller's first pause: under a second. Sipral Thu, 08 Oct 2026 00:00:00 GMT https://sipral.org/blog/four-clients-three-hours/ https://sipral.org/blog/four-clients-three-hours/ Sipral, PJSIP, baresip and Linphone measured again on one Asterisk: call set-up, three hours of calls side by side, and what each one has to ship. Sipral Thu, 08 Oct 2026 00:00:00 GMT https://sipral.org/blog/asterisk-jitter-correction/ https://sipral.org/blog/asterisk-jitter-correction/ Our bad-link comparison took Asterisk's jitter from the column that relays the client's own report. Read from Asterisk's own column, all four clients sit close. Sipral Wed, 07 Oct 2026 00:00:00 GMT https://sipral.org/blog/direct-media-silence/ https://sipral.org/blog/direct-media-silence/ When Asterisk handed a call's audio to the phone at the other end, one late packet could leave both sides silent. The lab found it; the fix is on main. Sipral Wed, 07 Oct 2026 00:00:00 GMT https://sipral.org/blog/node-and-websocket/ https://sipral.org/blog/node-and-websocket/ Sipral now has a TypeScript package that covers the whole C ABI, and it can carry SIP over a WebSocket it opens itself, proven over WSS in the lab. Sipral Wed, 07 Oct 2026 00:00:00 GMT https://sipral.org/blog/voice-agents-on-a-pbx-extension/ https://sipral.org/blog/voice-agents-on-a-pbx-extension/ Five voice-agent connectors, a SIP bridge run from one file, a Pipecat transport and a local echo demo: what Sipral 1.2 brings voice agents, with its timings. Sipral Wed, 07 Oct 2026 00:00:00 GMT