General
Firmware requirement	ab FW 7.3.30

The snom CARD is a wireless headset adapter specifically developed for connecting professional VoIP telephones from the series 300, 320, 360, 370, 720, 760, 820, 821, and 870 with wireless headsets. It enables control of the headsets via the DHSG standard, allowing electronic call answering and termination directly at the headset. This adapter serves as an interface between VoIP telephony and wireless headsets, thereby increasing the user's mobility in the work environment. Integration is achieved through the telephone's firmware, with no additional power supply required. Incoming call signaling is done via the original ringtone in the headset, enabling the user to answer and terminate calls directly at the headset. Compatibility is limited to the specified snom telephone models; for the snom 300 model, a minimum MAC address of 00041328XXXX and firmware version 7.3.30 or higher are required.

Applications
This adapter is particularly suitable for professional environments such as call centers, offices, or small businesses where high mobility and simultaneous communication quality are required. The use of wireless headsets reduces physical strain caused by cables and enables more efficient work, especially with frequent calls. Integration into existing VoIP infrastructures requires no additional hardware or power supply, simplifying installation and reducing operating costs.

Functions and Equipment in Detail
The snom CARD provides an interface according to the DHSG standard, enabling electronic control of wireless headsets. Incoming calls are signaled via the original ringtone in the headset, allowing the user to answer and terminate calls directly at the headset. Call answering at the headset and call termination at the headset are handled via integrated control, eliminating dependency on the telephone itself. Perfect firmware integration ensures stable and seamless communication between the telephone and the headset. No additional power supply is required, as the adapter is powered by the telephone.

Technology Explained Simply
The adapter uses the DHSG standard, a manufacturer-independent protocol standard for headset control in VoIP systems. This standard enables the transmission of signals such as call signaling, call answering, and call termination via the headset. Electronic call answering is achieved through an electrical connection activated via the headset when the user answers the call. Ringtone signaling occurs through the headset, ensuring the user notices the call even when away from the telephone. No additional power supply is required, as the adapter is powered by the telephone's power supply, simplifying installation.

Compatibility and Accessories
The adapter is compatible with snom telephone models 300, 320, 360, 370, 720, 760, 820, 821, and 870. Connection is made via the DHSG cable, designed for the 3xx, 7xx, and 8xx series. Use requires firmware version 7.3.30 or higher for the snom 300 model, with a minimum MAC address of 00041328XXXX. Accessories include the DHSG cable, used to connect the adapter to the headset.

Installation and Mounting
Installation involves simply connecting the adapter to the telephone and then connecting it to the wireless headset using the DHSG cable. Firmware integration occurs automatically once the telephone has the required firmware version. No additional power connection is needed. The connection is stable and requires no special configuration, making setup quick and easy.

Operational Advantages
Using the snom CARD enables complete mobility for the user, as they are no longer tethered to the telephone. Call answering at the headset and call termination at the headset increase efficiency, especially in environments with high call volumes. Ringtone signaling ensures the user notices the call even when away from the telephone. Perfect firmware integration guarantees stable and seamless communication. No additional power supply reduces operating costs and simplifies installation.