| AstroLess Public Address & Intercom Systems with VoIP Intercom Stations |
Main Features
• AstroLess (with no ASTRO server required) is the application of ASTRO server manager used for managing the communication functions in small systems (up to 20 VoIP nodes), using network IP technology implemented in each VoIP node.
• Based on the standard SIP and FastPA multicasting technology, the system offers high voice quality (16kHz audio band) with very simple installation and very easy-to-use operation.
• Programming of each VoIP node using the PC's web browser.
• Echo and noise cancellation management in each VoIP station.
• Full configurable voice matrix and priority configuration between SIP and FastPA communications.
• Fully integrated Public Address & Intercom System.
• Distributed amplification performed through the use of self-amplified loudspeakers with built-in power amplifier.
• Self-amplified loudspeakers (rated power: 15W or 25W; power supply: 24‑48Vdc) fitted with continuous volume control from 0W to the max rated power.
• Extended intercom operation (omnibus page/party, selective point-to-point, group calls and conference calls limited to 3 participants), with virtually up to 20 VoIP nodes (including the PA amplifiers).
• Paging zone calls (including single zones, any combination of zones and all zones).
• Alarm tones and/or prerecorded messages zone broadcasts (including single zones, any combination of zones and all zones), with manual activation from the access panels.
• Public Address / Intercom stations fitted with double full-duplex conversation mode: with handset or hands-free (without handset).
• Possibility to utilize as Public Address / Intercom stations any type of Fitre IP telephone sets (indoor, weatherproof and explosion-proof, including cordless/DECT).
• Main Public Address / Intercom stations (access panels) VoIP based, fitted with handset and keypad. If required, also equipped with gooseneck microphone and additional 40 buttons (up to 48 in total) keypad for direct activations.
• Very cheap and cost-effective cables network (LAN network to interconnect all IP Public Address / Intercom stations and two standard telephone pairs for each loudspeaker).
• All Fitre VoIP terminals (Public Address / Intercom stations and access panels) can be connected with a maximum allowed distance of 250 meters from the relevant LAN switch (instead of 100 meters as per usual standard).
• System architecture allowing, in case of fault of a field device (Public Address / Intercom stations, speakers and beacons), the complete operation of all other field devices even in case of multiple fault events.
Main Applications
Oil & Gas, Petrochemical, Power, Steel, Heavy and Light Industries.
Main Options
• Self-amplified loudspeakers fitted with ALC (Automatic Level Control) of the output power according to the variation of the ambient noise level.
• I/O card in each VoIP node (e.g. for managing an external contact to activate an external visual beacon in each station, an automatic direct call and/or a local CCTV camera).
• Support for ReteMaticTM architecture (up to 500 meters distance Ethernet connection transporting data and power over existing two wires cable in very hard industrial applications).
• Full compatibility with larger and powerful ASTRO systems.
 System Architectures Examples > > AstroLess Public Address & Intercom Systems with VoIP Intercom Stations
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