How a London Plumbing & Heating Company Deployed a VoiceInfra AI Agent on Yeastar P-Series for Out-of-Hours Call Handling
A London-based plumbing and heating company serving residential and commercial clients across the UK capital deployed a VoiceInfra AI agent on their Yeastar P-series PBX via extension-based registration to handle out-of-hours calls. The AI agent answers emergency boiler breakdowns, burst pipe calls, and drain blockages outside business hours, triaging urgency and booking call-outs for their Gas Safe registered engineers.
Yeastar P-Series
Platform Connected
AI agent registered as a Yeastar P-series PBX extension
Out-of-Hours
Coverage Window
Every after-hours call answered by AI, no voicemail
Self-Deployed
Setup Method
Registered and configured by the company without vendor support
0
Infrastructure Changes
No hardware, no carrier switch, no SIP trunk
The Challenge
The company receives out-of-hours calls for plumbing and heating emergencies: boiler breakdowns, burst pipes, drain blockages, and heating system failures, all of which need immediate attention. Outside business hours, these calls were going unanswered, leaving customers without heat, hot water, or with water damage while waiting for the next business day. The company needed an AI agent that could handle after-hours emergency triage, assess urgency, and book call-outs for their Gas Safe registered engineers, all deployed on their existing Yeastar P-series phone system.
The Solution
The company deployed a VoiceInfra AI agent on their Yeastar P-series PBX using extension-based registration. The AI agent was registered as a Yeastar extension and synced with the out-of-hours function to receive calls routed outside business hours.
The AI agent was trained on the company's full service catalogue: plumbing repairs, boiler servicing and installation, drain clearance, heating system maintenance, and their subscription plans. It handles the full after-hours call flow: greeting, emergency triage, subscription plan enquiries, appointment booking, and intelligent routing to the on-call engineer.
The entire setup was self-configured by the company using VoiceInfra's agent builder. They registered their own Yeastar extension, built their own AI agent, trained it on their service content, and deployed it without vendor onboarding.
Outcomes
Out-of-hours coverage on Yeastar P-series
AI agent registered as a Yeastar extension and synced with the out-of-hours function. All after-hours calls go to the AI agent, no customer waits until morning.
Emergency triage for plumbing and heating
AI assesses call urgency: boiler no-heat, burst pipe, drain blockage, and dispatches to the on-call Gas Safe engineer immediately.
Service plan enquiries handled automatically
AI answers questions about service plans, booking maintenance appointments and explaining coverage and pricing.
Self-deployed on existing infrastructure
The company registered the AI agent extension on their Yeastar P-series themselves. No new hardware, no SIP trunk, no carrier change.
Looking Ahead
The company is expanding the AI agent to handle inbound calls during business hours for non-emergency enquiries, freeing up their office team to focus on complex customer support and engineer dispatch coordination.
Key Takeaways
Trade businesses need out-of-hours coverage
Plumbing and heating emergencies don't wait for business hours. An AI agent handling after-hours calls means no customer with a burst pipe or broken boiler is left waiting until morning.
Yeastar P-series extension registration is plug-and-play
The company registered their own Yeastar extension and connected the AI agent in minutes. No IT specialist, no vendor support, no PBX changes.
AI agents handle both emergencies and subscription enquiries
The same AI agent triages urgent boiler breakdowns AND explains service plan pricing and coverage, handling the full spectrum of customer calls.
Features That Made This Possible
Frequently Asked Questions
Ready to Handle Out-of-Hours Calls with AI?
Deploy a VoiceInfra AI agent on your Yeastar PBX, self-configured, no vendor support needed.