Native to the PBX
AI features are part of the P-Series firmware — no external AI service or additional server needed. Activate with a license key and start using immediately.
Overview
What is Yeastar Voice AI
A set of AI-powered features built directly into the P-Series PBX firmware. Call transcription, call summary, voicemail-to-text, neural TTS, and AI Receptionist are available without installing additional software or subscribing to third-party AI services. SIPPER deploys on our Pure VoIP Network in Thailand — dedicated voice infrastructure with SIP Trunk bundled.
Works on Every Client
Access transcripts, summaries, and voicemail text from Linkus desktop, mobile, and web clients. AI results follow you across all devices.
Multi-language Support
Transcription and TTS support multiple languages including Thai and English. Ideal for bilingual teams and international business communication.
Key Features
AI-powered voice features at your fingertips
Call Transcription
Converts voice calls into readable text in real time with speaker identification and timestamps. Start or pause with a single click, or enable automatically for all calls.
Call Summary
Generates a concise recap after each call — key discussion points, decisions made, and action items. Eliminates manual note-taking across teams.
Voicemail Transcription
Automatically converts voicemail to text with over 95% accuracy. Scan voicemail content at a glance without listening to audio recordings.
Neural Text-to-Speech
Powered by AWS Polly Neural — 100+ voices in 40+ languages with adjustable speech rate, volume, and pitch. Create IVR prompts, queue announcements, greetings, and after-hours messages without a recording studio. Free in Enterprise and Ultimate plans.
WebSocket Audio Streaming
Secure one-way audio streaming (wss://) to external platforms with configurable sample rate and authentication. Selectively stream by extension, trunk, or DID number for speech analytics, sentiment detection, or custom AI processing.
CRM Integration
Transcripts and summaries sync with Salesforce, HubSpot, Zoho, and more via built-in connectors. Attach call records to customer profiles automatically.
Automation
Call Flow Designer — visual call automation
A drag-and-drop, no-code visual editor for designing inbound call workflows. Combine TTS prompts, conditional logic, CRM lookups, and caller authentication into automated flows — without writing a single line of code.
Drag-and-Drop Builder
Pre-built blocks for IVR prompts, transfers, user input, conditions, loops, and recording. Build complex call flows visually without developer involvement.
External Data Lookups
Query CRM or LDAP databases mid-call for dynamic routing. Route VIP callers, verify PINs, or greet callers by name using real-time data from your business systems.
Dynamic TTS Prompts
Generate voice prompts on the fly from database values. Greet callers by name, read account balances, or announce appointment times — all with natural-sounding AI voice, no pre-recorded audio needed.
Use Cases
Who benefits from Voice AI
Voice AI features serve different roles across the organization — from frontline staff who need instant transcripts to managers who need insights from call data.
Sales Teams
Automatic call summaries capture commitments and next steps. Reps spend less time on CRM data entry and more time closing deals.
Customer Support
Transcripts document every interaction for quality assurance and dispute resolution. Supervisors review text instead of listening to full recordings.
Executives & Managers
Missed a voicemail from a key client? Read the transcript instantly. WebSocket streaming feeds call data into analytics dashboards for data-driven decisions.
IT Administrators
Build automated call flows with the visual Call Flow Designer — no coding needed. Create dynamic IVR menus with TTS prompts, CRM lookups, and time-based routing from a single drag-and-drop interface.
Full Capabilities
Complete Voice AI feature set
- Real-time Call Transcription
- Speaker Identification
- Timestamp Markers
- Auto Call Summary
- Key Points Extraction
- Action Item Detection
- Voicemail-to-Text
- Voicemail-to-Email with Transcript
- 95%+ Transcription Accuracy
- Multi-language Transcription
- Neural TTS (AWS Polly Neural)
- 100+ TTS Voices in 40+ Languages
- Adjustable Speech Rate & Pitch
- IVR Prompt Generation
- Queue Announcement TTS
- Custom Greeting TTS
- After-hours Message TTS
- Call Flow Designer (No-code)
- CRM/LDAP Data Lookups
- Dynamic TTS from Database
- WebSocket Audio Streaming (wss://)
- Selective Stream by Extension/DID
- External AI Integration
- CRM Screen Pop with Transcript
- Linkus Desktop/Mobile/Web
- REST API Access
- Call Recording + Transcript Sync
- AI Receptionist (24/7, multi-language)
- Sentiment Detection (via WebSocket)
- PDPA-compliant Data Residency
- Bundled SIP Trunk (Cloud Edition)
Deployment Options
Choose the deployment that fits your business
AI feature availability varies by edition. Cloud and Software editions support the full AI suite. Appliance edition includes TTS, Voicemail Transcription, and Call Flow Designer but does not support Call Transcription or WebSocket streaming. Cloud Edition runs on SIPPER's Pure VoIP Network with SIP Trunk bundled.
Cloud Edition — Full AI, Hosted by SIPPER
All Voice AI features included: Call Transcription, Call Summary, Voicemail-to-Text, Neural TTS, WebSocket streaming, Call Flow Designer, and AI Receptionist. Powered by SIPPER's Pure VoIP Network in Thailand — dedicated voice-only infrastructure with direct NT and True carrier interconnection. Call recordings and transcripts stay in-country for PDPA compliance. SIP Trunk bundled. Automatic firmware updates and predictable monthly costs.
Software Edition — Full AI, Self-hosted
Same complete Voice AI feature set as Cloud — Call Transcription, Summary, TTS, WebSocket, and Call Flow Designer. Install on your own server or VM (VMware, Hyper-V, KVM). Ideal for organizations that want full AI capabilities with on-premise data control.
Appliance — TTS, Voicemail AI & Call Flow Designer
Includes Neural TTS, Voicemail Transcription, and Call Flow Designer. Note: Call Transcription, Call Summary, and WebSocket streaming are not available on the Appliance edition. Best for organizations that need TTS-driven IVR automation and voicemail-to-text with on-premise hardware.
FAQ
Common questions about Yeastar Voice AI
Does Voice AI require a separate subscription?
Core Voice AI features are included in the P-Series Enterprise and Ultimate plans. Neural TTS is free in both plans. Call Transcription and Summary usage is billed by transcription minutes with a free trial available. No separate AI platform subscription is needed.
Which editions support which AI features?
Cloud and Software editions support the full AI suite: Call Transcription, Call Summary, Voicemail-to-Text, Neural TTS, WebSocket streaming, and Call Flow Designer. The Appliance edition supports Neural TTS, Voicemail Transcription, and Call Flow Designer, but does not include Call Transcription, Call Summary, or WebSocket streaming.
Which languages are supported for transcription?
Yeastar Voice AI supports multiple languages for call transcription, including English, Thai, Chinese, Japanese, and more. Neural TTS offers 100+ voices across 40+ languages with regional accents. Language lists are updated with firmware releases — contact SIPPER for the latest.
How accurate is the call transcription?
Transcription accuracy exceeds 95% for supported languages in typical office environments. The system includes speaker identification and timestamps. Accuracy may vary based on audio quality, background noise, and speaker accents.
Can I use Voice AI with my existing Yeastar P-Series?
Yes. Voice AI features are delivered via firmware updates. If your P-Series is running a supported firmware version, you can activate Voice AI with a license upgrade — no hardware replacement needed.
What is the Call Flow Designer?
A visual, drag-and-drop tool for building inbound call workflows without coding. You can combine TTS prompts, conditional logic, CRM/LDAP lookups, PIN verification, and time-based routing into automated flows. Available on all three editions.
Is an AI Receptionist coming?
Yes. Yeastar has previewed an AI Receptionist that can answer calls 24/7, trained on your business documents (PDFs, spreadsheets, URLs). It supports multiple languages, multiple personas, and performance reporting. Contact SIPPER for availability updates.
Does SIPPER provide training on Voice AI features?
Yes. SIPPER provides hands-on training covering transcription settings, Call Flow Designer, TTS prompt creation, and CRM integration. We also support ongoing optimization as your team discovers new use cases for the AI features.
Get Started
Add Voice AI to your phone system.
Tell us about your current PBX setup and we will show you how Yeastar Voice AI features can be activated — whether you are deploying a new system or upgrading an existing P-Series installation.