Bogen Communications TEL1S

Telephone interface input module.

Telephone Input Module (TEL1S) The TEL1S module has a transformer-isolated, balanced input and configuration jumpers that allow it to interface with both wet and dry loop telephone systems. In the dry loop mode, it allows connections to page port systems. In the wet mode of operation, it allows connections to both ground start and loop start telephone systems. The module has a 6-pin input barrier strip connector to make the input connection. It provides for the connection of an external talk-battery power supply of 48V DC. The module has a gain/trim control that allows the gain to be adjusted from 0 dB to 30 dB of gain. It has the ability to mute lower priority modules and be muted by higher priority modules. The module is able to assume any of 4 priority levels. It has a VOX/gating circuit to controlmuting of lower priority modules and its internal gating circuit with separate controls for gate threshold and duration. It has a built-in limiter to limit the maximum output level of the module, with a threshold control. The module’s output is assignable to either or both of two mixing buses.