ASLT - AlphaCom Subscriber Line Board
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The ASLT line board supports connection of 6 analog intercom stations.
Contents
Highlights
- Each board provides six 4-wire subscriber connections
- 6 RCO remote control outputs (software configurable activation)
- 1 voice-switched conversation per board
- When using handset or full duplex conference unit at both ends, the system is non-blocking within each module
- All subscriber connections suitable for display stations
- Line monitoring
- Software-controlled output volume control
- Hot plug-in/plug-out
- Red/green/amber LED indicates system status
Installation in AlphaCom XE20/XE26
- In the AlphaCom XE26 the ASLT board can be placed in any board position 1-23.
- Bord position 1: Physical numbers 1 to 6
- Bord position 2: Physical numbers 7 to 12
- !
- !
- Bord position 6: Physical numbers 31 to 36
- In the AlphaCom XE20 the ASLT board can be placed in any board position 1 and 8-23.
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There are three different subscriber connection methods available:
- Subscriber connection board (1009930200) with 1.5 m connection cables (1009501011) or 3.0 m connection cable. 2 sets of 1009930200 and 1009501011 are included with the XE20 and XE26 exchange packages.
- 5 m (1009501021) and 10 m (1009501023) subscriber connection cables. These cables are un-terminated, color code is packed with the cables.
- Filter and connection card 1009501041 with RJ45 connectors.
Installation in AlphaCom XE7
- In the AlphaCom XE7 the ASLT board can be placed in any board position 1-6.
- Bord position 1: Physical numbers 1 to 6
- Bord position 2: Physical numbers 7 to 12
- !
- !
- Bord position 6: Physical numbers 31 to 36
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Turn power off before inserting or removing boards |
Stations are connected to the AlphaCom XE7 by means of pluggable screw terminals on the backplane.
There are 12 RCO outputs available on pinheaders on the backplane. RCO 1-6 are controlled by the ASLT board in position 1, and RCO 7-12 are controlled by the ASLT board in position 2.
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Physical numbers 5 and 6 are by default used as inputs for Audio Program distribution, but can alternatively be used for intercom stations. See related article: Physical number 5 and 6 (AlphaCom E7) |
Cabling
The cabling from the AlphaCom server to the intercom station is star wiring. Two pairs of wires are required to each station. The maximum distance depends on the cable diameter:
- 0.5 mm wires: 1.4 km
- 0.6 mm wires: 2.0 km
- 0.9 mm wires: 4.0 km
The wires are called a-,b-, c- and d-wires. a-b-wires are transmit and cd-wires are receive.
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a- and b-wire must be in one pair, and c- and d-wire in another pair |
Compatibility
The four-wire interface provides compatibility with existing standard station range from STENTOFON with the exception of TouchLine display stations produced earlier than March 1995. These stations are no longer compatible due to reduction on the display signal output from the exchange. TouchLine display stations produced after March 1995 are labeled version 1.1 and are fully compatible with the AlphaCom exchange.