General
Compatibility	Fanvil X4, X4G, X5S
Product type	Replacement headset

This item is a replacement handset for Fanvil SIP telephone models of types X4, X4G, and X5S. It serves as a direct replacement for the original handset used in these devices and enables the restoration of telephone functionality if the original handset is damaged, lost, or no longer operational. Compatibility is limited to the specified Fanvil models, with the mechanical fit and electrical connection to the telephone ensuring that the replacement handset can be seamlessly integrated into the existing system.

Applications

The replacement handset is specifically designed for use with IP telephones from the Fanvil X4, X4G, and X5S series. These devices are used in office environments, call centers, and other professional communication environments where reliable and clear voice transmission is required. The handset is thus part of an IP telephony system operated via SIP (Session Initiation Protocol) and serves direct communication over the network. It replaces the original handset without requiring any additional adjustments to the telephone or network infrastructure.

Features and Equipment in Detail

The handset is designed as a replacement part and performs the same function as the original handset: it enables telephony via the IP telephone, with voice transmission handled by the integrated microphone and speaker. The mechanical design allows it to be inserted into the telephone and ensures correct electrical contact. It is a passive replacement part and does not offer additional features such as Bluetooth, battery, or digital signal processing. Use is exclusively in direct connection to the Fanvil IP telephone.

Technology Explained Simply

The handset is a mechanical-electrical component that plugs into the IP telephone and enables voice transmission via the SIP protocol. It includes the necessary contacts to communicate with the telephone and is tailored to the specific connection geometries of models X4, X4G, and X5S. The function is based on the transmission of analog signals through the telephone, which are digitized by the IP telephone and sent over the network. There are no additional electronic components or software functions; the handset is purely mechanical and electrical in design.

Compatibility and Accessories

The replacement handset is compatible exclusively with Fanvil models X4, X4G, and X5S. It cannot be used with other Fanvil models or telephones from other manufacturers. In conjunction with these IP telephones, additional accessories such as headsets (e.g. 7.1P, 8.1P, monaural, Wideband), PoE injectors, network switches (e.g. ALL-SG8205PD, ALL8804PoE+, ALL-SG8610PMJ, ALL-SG8626PM) or replacement power supplies (e.g. 5V/2A) can be used to enhance the system.

Installation and Mounting

Installation is performed by simply inserting the handset into the telephone. No tools, additional connections, or configurations are required. The mechanical fit ensures that the handset sits securely in the telephone and that electrical contacts are correctly connected. Functionality is immediately available once the handset is inserted.

Operational Advantages

The replacement handset enables quick and cost-effective restoration of telephone functionality without requiring replacement of the entire telephone. It is directly compatible with the specified models and requires no additional modifications. Using an original-compatible replacement part ensures stable and reliable communication without impairing voice quality or the functionality of the IP telephone.