SOLUTION

FreeSWITCH, Asterisk & WebRTC Production Rescue

Calls are dying now. Send the SIP trace, logs and symptoms, the outcome is restored traffic and a named layer, not a greenfield pitch.

Live incidentAudioTrunksWebRTCProofThen monitor

Searchers who type one-way audio or SIP trunk down do not want a feature matrix. They want the path back. This solution is that outcome. The matching service is how the traces are read.

2026 buying brief

Best suited for

  • Live FreeSWITCH, Asterisk or FusionPBX deployments
  • WebRTC apps failing on guest Wi‑Fi or corporate NAT
  • SIP trunk or registration outages in production
  • Teams that already tried a config change and made it worse

What you get

Restored calls where possible, a written cause, and the monitor that would have caught it.

Searches this page answers

Fix one-way audio, WebRTC call failed, SIP trunk not working, PBX down.

Symptoms we troubleshoot

  • One-way audio or no audio after answer
  • SIP registration failures and flaky endpoints
  • 401 / 403 / 404 / 488 / 5xx on INVITE or trunk OPTIONS
  • RTP one-way, wrong codec or NAT pinholes
  • WebRTC ICE / TURN failures in browser or mobile
  • Dead or flapping SIP trunks and DIDs
  • FreeSWITCH channel stuck states; Asterisk PJSIP mismatches
  • Config/DB drift, recording URLs, API timeouts under load

Send the SIP trace, logs and symptoms

Solution architecture

Outcome: traffic returns
Business jobCalls complete again
CarriersTrunk / DID / CLI
Call controlPBX still owns SIP
ExperiencePhone · browser · mobile
RecordCRM / ticket still writes
We do not ‘fix audio’ by turning off SRTP and walking away.

What ‘fixed’ means

Named layer

Signaling, media, NAT/ICE, app or disk, written down.

Smallest change

The patch that restores, with a rollback.

Proof

pcap, log excerpt or ICE pair, not a vibe.

Next 30 days

Alerting so the same Friday page does not return.

FAQ

Questions buyers ask before hiring

Direct answers on scope, stack, rescue vs build, and how to start, structured for search and AI summaries.

Direct answers on scope, stack, rescue vs build, and how to start, structured for search and AI summaries.

We reproduce the failure, capture traces, patch or reconfigure with rollback, then document runbooks so the issue does not return silently.

Yes. Portfolio pages use use-case titles; confidential details stay in private channels.

Yes. We map commodity vs differentiation boundaries, see RingCentral vs custom CCaaS.

REGISTER only proves the trunk credentials. INVITE, identity headers, codec offers, RTP pinholes and carrier-specific IMS rules still have to pass. Indian PSU and PRI-over-SIP profiles are a common example, see SIP registered but no calls.

Use CPaaS when volume is low and speed matters. Own SIP when margin, recording locality, custom routing or multi-tenant resale is the product. Hybrid designs are normal in 2026.

Yes. We work from pcaps and SDP: NAT, security groups that open 5060 but not RTP, transcoding, ICE/TURN and REFER/re-INVITE behaviour, not guesswork.

Share the current stack (PBX, CRM, cloud), the failure or goal in one paragraph, peak call volume, carriers, and any deadline. Screenshots, a pcap, or a short Loom beat a 40-page RFP. Use the project brief

Yes. Delivery is remote-first from Delhi with scheduled overlap for EU, UK, US and APAC stand-ups. Production changes use written runbooks, rollback steps and agreed maintenance windows.

Yes. Many engagements begin with a 1–2 week SIP trace review, tenant-isolation audit, or architecture assessment. If the fit is good, scope expands from evidence, not from a generic sales deck.

Founders, CTOs, telecom leads, MSPs and product teams building or fixing UCaaS, CCaaS, CRM+voice, AI voice, or vertical SaaS, not buyers who only need seats on a mass-market suite.

Need this built?

Send the current architecture, call volume, carriers and the workflow you need to automate or productize. Discovery can start from a broken PBX or a blank product brief.

Discuss Your Project Project brief
Related
Case study: FusionPBX fraud monitor →Case study: WebRTC one-way audio lab →Need evidence timeline? Digital Forensics →Rescue engineering →WebRTC →SIP / trunks →One-way audio write-up →

Architecture first. Then production.

A practical technical discussion focused on SIP, media, tenants, AI and the delivery path, not a generic sales deck.