SemSound Call Station Remote Product Description • Connects to call station interface via CAT-5 cable • Up to 1 km from SemSound optical network • Uses standard SemSound keypads for extension • Built-in limiter • Powered via CAT-5 and/or local power supply 8003027 is a call station with the same functionality as the basic call station 8003312 but it uses CAT-5 cable for its connection to the SemSound network. It connects, one-to-one, to the call station interface 8003304, which is part of the SemSound optical network. The CAT-5 cable, carrying digital audio and control data, can be as long as 1 km. The length of the CAT-5 cable is not a part of the SemSound optical network length. This considerably increases the overall possible length of the optical network. The Remote Call Station can be extended with up to 16 keypads use 8003028 with eight programmable keys. Extension with a numeric keypad is also possible. Functions The call station has a cardioid, supervised microphone on a gooseneck stem with good speech intelligibility. A limiter and a speech filter improve intelligibility and prevent clipping of the audio. It has a volume control for the monitoring speaker and the headset. When it plays a chime or a pre-recorded message, the call station activates its speaker. When a headset is connected, it replaces the microphone and speaker. The remote call station connects via a CAT-5 cable to a 8003304 unit, which interfaces it to the SemSound optical network. The call station gets its power from the interface unit via the CAT-5 cable, but is also equipped with a lo‑ cal power supply connection for extreme cases with a very long cable and many keypads. Up to 16 call station keypads can connect to the station via a serial communication link. The call station provides the power for the keypads. Up to 224 priorities can be assigned to the call station. All configuration can be done via the SemSound network controller. The remote call station is fully supervised and supports fail-safe operation. Even if the SemSound network con‑ troller fails, the call station is still able to put through emergency calls. Controls and indicators • Three status LEDs • Configurable PTT-key • Volume control for loudspeaker/headset Interconnections • RJ45 connector for CAT-5 connection • Serial data and power supply interface for call station keypads • Kycon type (lockable) connector for power and two control inputs • 3.5 mm jack for headset/headphone STD-SEMCO-E-LA-0001 Rev. A Page 173
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