P‑Series V25.1 GA: AI Receptionist, SMS, MCP, and Direct Live Chat Links

The latest version of the P‑Series PBX platform, V25.1 GA, opens up new possibilities for virtual receptionists. By adding automatic SMS sending, secure MCP integration, direct chat link generation and granular control over transcription, Yeastar enhances operational efficiency and the customer experience.

AI Receptionist: SMS and MCP

Virtual agents can now send confirmation SMS messages during calls using configurable rules. They can also securely invoke third-party tools via the MCP protocol, enabling complete automation without exposing external APIs.

Custom MCP integration

Administrators can register an MCP server, import multiple tools, define execution rules and assign specific tools to receptionists. All interactions are recorded in the CDR logs for auditing and troubleshooting.

Direct chat links

The PBX generates unique chat URLs that can be inserted into emails or signatures. With a single click, customers can start a web chat or voice call instantly, reducing communication friction.

Automatic transcription control

Administrators configure transcription rules based on call direction and target entity. Agents can enable transcription by calling a short code (*09) for quick recording.

Additional optimizations

The Software Edition version configurator can now be run via API, simplifying initialization and API credential generation for future operations.

The Yeastar team supports businesses and integrators in assessing their needs, selecting an architecture, and preparing for deployment.

The latest version of P‑Series PBX, V25.1 GA, is now available for production following its Alpha and Beta phases. It enhances AI Virtual Receptionist capabilities by adding automatic SMS delivery, secure integration of MCP servers, and generation of direct Live Chat links, while improving administrative permission controls.

New PBX Features

The update introduces several major improvements, including SMS management, MCP integration, direct Live Chat links, automatic call transcription, and optimization of the configuration wizard via API.

AI Receptionist: SMS & MCP

Virtual agents can now send SMS automatically during calls, using configurable rules. MCP integration allows receptionists to call third-party tools through a secure portal without directly exposing external APIs.

SMS Messaging by the AI Receptionist

During a call, the receptionist detects a trigger, invokes the SMS API, and sends a preconfigured or customized message. It automatically extracts key variables (name, date, etc.) to populate text templates, ensuring instant confirmations and improved conversion.

Custom MCP integration

Administrators can register MCP servers, import multiple tools, define execution rules, and assign specific tools to receptionists. All invocations are logged in the CDR for auditing and troubleshooting.

Direct Live Chat Links

P‑Series PBX now generates shareable Live Chat URLs for insertion in emails, signatures, or marketing campaigns. A single click lets customers start a web chat or voice call immediately.

Automatic Call Transcription Control

Administrators configure transcription rules based on direction and target entity. Agents can activate transcription by dialing a code (*09) for instant recording.

Additional optimizations

The PSE configuration wizard can now be completed via API endpoints, simplifying setup and API credential generation for future operations.