Go Voice Application Development
When call control, integrations or automation need real software behind them, Zypager builds voice backend services in Go — typically around Asterisk ARI — designed for clear state, observability and safe failure handling rather than throwaway scripts.
Problems solved
- Call logic that has outgrown the dialplan
- Telephony-to-business-system integrations
- Brittle scripts with no error handling
- No clear state model for calls
How Zypager helps
- Design Go services around ARI
- Model call state, retries and recovery explicitly
- Integrate PostgreSQL, Redis and queues
- Add logging, metrics and testing
Technical areas covered
Typical deliverables
- Service architecture design
- Reference Go implementation or skeleton
- Testing, logging & deployment notes
Frequently asked questions
Yes. One-way and no-audio problems are usually in the RTP media path or NAT/SDP handling rather than the signalling. With a SIP trace and the SDP from each leg, the media direction can be followed to the point where it stops.
Yes — Asterisk, FreeSWITCH, Kamailio, OpenSIPS and RTPengine. Many real systems combine them (edge proxy, media relay and application logic), and problems often live at the boundaries between them.
WebRTC-related work may be reviewed separately where it is directly connected to Asterisk, Kamailio, RTPengine or SIP troubleshooting, but it is not currently offered as a standard fixed-price service.
Reading traces is central to how Zypager works. A clear pcap, sngrep or Homer export, plus call details, is often enough to identify the failing transaction without live access.
Yes, on an hourly basis for urgent incidents — failed inbound/outbound calls, RTP/no-audio and carrier problems. Final scope and availability depend on access and complexity.
Related services
Asterisk ARI Development in Go
Event-driven call control in Go, built to be tested and trusted.
Offline Speech-to-Text with Vosk
Private offline ASR for Asterisk recordings, ARI workflows and transcription.
Asterisk Consulting
Dialplan, PJSIP and ARI that are easier to debug and safer to run.
Not sure which service you need?
Send the symptoms and a call example. The right starting point becomes obvious from the trace.