What is
Onsite Proxy?
Seamless remote office connectivity is now easier than ever on the Yeastar P-Series Phone System. The Onsite Proxy capability resolves the common trade-off between security and audio performance. It functions as an onsite SBC, establishing a dedicated encrypted tunnel for remote IP phones. This allows devices to connect and communicate with the PBX without requiring VPNs or inbound firewall configuration, while securely proxying SIP signaling and VoIP traffic between remote sites and the central system. For multi-site deployments, Yeastar Onsite Proxy supports large-scale device connectivity and can be centrally monitored across multiple PBXs via management portal, including proxy status and device count visibility.
Beyond the Onsite Proxy solution, Yeastar also provides versatile remote connectivity options to suit different business needs. This includes the Remote Access Service for seamless Linkus UC Client access and PBX web management, as well as the Remote SIP Service designed for secure third-party remote SIP registration. Whether through a localized proxy or cloud-based encryption tunnels, the P-Series ensures your team stays connected securely from anywhere.
How Does Onsite Proxy Work?
PBX Side: Secure & Simplified Connectivity
The Onsite Proxy connects remote branches to the central PBX through two coordinated components:
Remote Site (Onsite Proxy Agent): A lightweight software agent deployed within the remote branch’s local network. It initiates an outbound, encrypted connection to the PBX to establish a secure tunnel. This allows IP phones to connect without manual network configuration, supporting Plug-and-Play (PnP) discovery, Zero-Touch Provisioning (ZTP), and SIP registration.
PBX Side (Onsite Proxy Server): The PBX functions as the server-side hub, accepting and managing these incoming encrypted tunnels. Administrators can create, manage, and monitor proxy instances through a centralized interface, enabling consistent management of both remote and local extensions.
Centralized Monitoring & Management
For service providers or IT managers, Yeastar Central Management (YCM) provides centralized monitoring for onsite proxies across multiple PBX instances. It offers visibility into connection status and operational data, allowing users to quickly identify offline or abnormal instances. This batch monitoring capability significantly improves management efficiency for large-scale or multi-site deployments.
For detailed set up steps, please refer to the Configuration Guide.
The Benefits of Onsite Proxy
No Inbound Firewall Configuration Required: Remote sites connect to the PBX using outbound encrypted tunnels, eliminating the need for inbound port forwarding. This helps maintain existing firewall policies without exposing additional ports.
Zero-Touch Provisioning for Remote Phones: Onsite Proxy enables automatic device discovery within the remote network and forwards provisioning requests to the PBX, allowing IP phones to be deployed without manual configuration.
Optimized Audio Quality: By establishing a direct encrypted tunnel between remote sites and the PBX, Onsite Proxy reduces the impact of NAT traversal and indirect routing, helping maintain stable and consistent call quality.
Scalable and Centralized Management: YCM empowers administrators to oversee multiple Onsite Proxy instances through a single pane of glass. By providing granular visibility into connection status and device performance, it transforms the complexity of multi-PBX maintenance into a streamlined, scalable process.
Common FAQ
Related Features
Complete Communications Solution
Available both in the cloud and on-premises, Yeastar P-Series Phone System unites calls, video, omnichannel messaging, integrations and more in one simple system for your seamless communications anywhere.
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