A buyer whose production PBX is broken hires faster than someone casually researching engines. UnifiedPBX.in already publishes the diagnostic work, one-way audio, signaling vs RTP vs browser path. This service is that work as an engagement.
2026 buying brief
Who this is for
Teams with one-way audio, registered-but-dead trunks, WebRTC that dies on guest Wi-Fi, or a PBX that pages every Friday.
What you get
A verdict on the layer, a change you can ship, and the traces that prove it, plus what to monitor next.
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 or email hello@unifiedpbx.in.
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.