Yeastar P-Series Software Edition Ultimate Plan — Annual Enterprise PBX Subscription with Disaster Recovery

Yeastar P-Series Software Edition with the Ultimate Plan is a software IP PBX platform for enterprise organizations requiring complete unified communications, multi-site redundancy, and SDK-level extensibility. The system deploys on-premise or across major cloud providers including AWS, Azure, and Google Cloud, scaling from small teams to organizations with thousands of active extensions without infrastructure lock-in.

The platform supports up to 10,000 extensions and 1,000 concurrent calls, scaling from 4SC to 1024SC based on allocated server resources. Compared to the Enterprise Plan, the Ultimate tier adds Video Calls and Video Conferencing for internal and external communications, WebSocket for Audio Stream Transmission enabling real-time audio integration with external systems, Active Directory Integration for centralized user lifecycle governance, Linkus SDK for building custom UC client applications, and Disaster Recovery for service continuity in multi-site configurations.

Integrations cover Microsoft 365 (Teams, Outlook, Azure AD/Entra ID), SSO via Google and Red Hat, CRM and helpdesk platforms — Salesforce, HubSpot, Dynamics 365, Zoho, Bitrix24, Odoo, Zendesk — contact synchronization from Microsoft SQL and LDAP, and remote file archiving to Google Storage, Amazon S3, SharePoint, and S3-compatible storage. Omnichannel messaging includes Live Chat, SMS, Facebook, and WhatsApp. AI features cover AI Receptionist, voicemail transcription, call transcription and summary, Text-to-Speech, and WebSocket for external audio processing.

The Ultimate Plan targets IT administrators, system integrators, and MSP partners delivering UCaaS on self-managed infrastructure where SDK extensibility, full redundancy, and Active Directory-based governance are non-negotiable operational requirements. Suited for enterprises with geographically distributed sites, contact center operations, and organizations standardizing communications infrastructure across business units.