An AI Agent that resolves routine support requests
Listen to the issue, ask focused follow-up questions and give callers a clear answer or practical next steps before a human agent is involved.
Use your FAQs, policies, product guides, support documentation and internal notes to give relevant answers based on information you control.
Handle first-line enquiries, after-hours support and queue overflow so callers can get help even when your team is busy or unavailable.
Resolve more calls before human handoff
The 3CX AI Customer Service Agent goes beyond greeting and routing callers. It listens to the request, searches the Knowledge Sources you assign and tries to provide a useful answer before deciding whether human support is required. Place it where it adds the most value:
- First-line support: For routine questions before calls reach the support queue.
- Queue overflow: An alternative to waiting when your team is busy.
- After-hours support: Approved info in out of office hours.
- General enquiries: Opening times, directionsor product info before transfer.
- Specialist routing: Identify topic, send caller to right person, queue or AI Agent.
For better results, deploy several focused agents instead of one agent expected to cover every scenario. Each can have its own Knowledge Sources, first message, language settings, prompt, handoff destination and escalation topics.
Your business knowledge
Connect the AI Customer Service Agent to focused Knowledge Sources such as FAQs, policies, product information, troubleshooting guides and support documentation. When enabled, it can also use web search. Keep each source focused on one topic with a clear description.
Controlled escalations
Set a default Human Handoff destination for requests the AI Agent cannot resolve. Use Escalation Topics to direct billing questions to Finance or technical issues to a support queue or a specialist AI Agent. If a human takes over, caller details are available in the Web Client and the transcript can be reviewed for context.
First-line, overflow and after-hours
Designed for level 0 and level 1 support, it can answer common questions, collect relevant information and guide callers through basic troubleshooting. Responses stay short and focused, with one question asked at a time and one to three practical steps where appropriate.
Your AI Customer Service Agent questions answered...
It is a built-in 3CX AI Agent designed to handle routine customer service and support calls. It identifies the issue, searches assigned Knowledge Sources, provides a concise answer or practical steps and escalates when human help is required.
The AI Receptionist focuses mainly on greeting callers and routing them to the right destination. The AI Customer Service Agent follows a support-focused flow and tries to resolve the request before transferring the call.
It is designed for level 0 and level 1 support, including common questions, basic troubleshooting, information collection, general enquiries and requests covered by your approved support content.
Admins assign Knowledge Sources such as documentation, FAQs, help-centre articles, policies, product guides and internal support notes. The Agent can also use web search when this option is enabled.
V20 Update 10 supports OpenAI and xAI Grok as Realtime API providers for built-in AI Agents. Only one Realtime API provider can be active on the PBX at a time. Each provider uses its own API credentials and pricing.
Switching providers affects existing AI Agents. Knowledge Source assignments are removed, voice settings return to the provider default and each Agent should be reconfigured, reviewed and tested before it handles live calls again.
Go to Admin > Integrations > AI, expand Add Agent and select Customer Service. Assign the required Knowledge Sources, language, first message, handoff and escalation settings, then test the Agent with realistic caller requests. See the configuration guide for full instructions.
Industries We Work With
- Healthcare
- Automotive
- Education
- Technology
- Government
- Services
- Hospitality
- Finance
Healthcare Case Study Bringing NHS Surgeries’ Communications Back from Critical Condition

3CX’s Call Recording & UC Features Meet Surgery Requirements. "The new system dispelled our previous hang ups about hosted telephony and new technologies. With our dedicated internet line we've had a consistent and reliable service. The call quality has been great." Peter McIntyre, Practice Manager, NHS Read the case study.
A Case Study in the Automotive Industry - Buckle Up! Porsche Inter Auto Takes 3CX for a Spin

Thanks to advanced 3CX call center features, gearing up customer service was no issue. "3CX proved instrumental in helping take customer satisfaction to a higher level. We look forward to exploring new product features in upcoming 3CX updates." Željko Hitrec, Communication Manager, Porsche Inter Auto Read the case study
A Case Study in Education: Douglas County School District Enjoys Increased Security and Significant Savings

3CX was chosen above Jive®* and Cisco®* as most cost effective: “This was one of the best decisions we made. The 3CX system is easy to configure and manage and runs on hardware we already owned. ROI will be less than three years." John Endter, IT Director, Douglas County School District Read the case study
Our Case Study in Technology Showcases Benefits to Brazil’s Largest Data Center Provider

With company telephony costs reduced by 20% and increased employee mobility: "We gained high availability VoIP, easy system admin and advanced communications features. Our teams have quality communication capabilities to respond quickly to our customers." Fábio Trimarco, IT Governance Manager, Ascenty Read the case study
3CX Government Implementation Case Study in Bavaria's Landkreis Rhön-Grabfeld Across 31 Municipalities

“3CX was a replacement for Avaya. Existing VOIP infrastructure was expanded to transition from simple telephony to company-wide unified comms. 3CX apps and Web Client gave users a powerful, easy-to-use softphone." Stephen Johannes, Network Telecoms Manager, Landkreis Rhön-Grabfeld Read the case study
A Service Industry Case Study On How Argus Group Insures Themselves Against Communications Failure with 3CX

On replacing their outdated, analog Mitel®* PBX: "The 3CX project allowed us to re-examine our telephony operations. We optimized call flows, shortened wait times for clients and have granular reporting on the nature of calls in the short and long term.” Tory Richard, Head of IT, Argus Group Read the case study
3CX Leads in Club Med Hospitality Case Study - A Globally Recognized Brand Serving Guests Since the 1950’s

3CX checks in to Club Med's all-inclusive resort with a 5 star communication solution: “The integration of 3CX with our global service system (NICE In Contact / Verizon) in the USA, helped increase productivity in a cost-efficient way. Right solution deployed by right partner!” Claudio Cavalcanti, Head of IT South America, Club Med Read the case study
A Case Study in Finance - Adding Value to Phillips Securities Group with Free Interoffice Telephony for 700+ Employees

Rising telephone maintenance costs and operational deficiency over the PSTN: “3CX has cut Phillip’s phone costs sharply. Voice calls go out over the IP phone system, and are routed over the PSTN at the lowest cost. Eight offices are bridged, and interoffice calls are free with IP telephony." Terence Tung, Network Manager, Phillips Read the case study
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