ASLT - AlphaCom Subscriber Line Board
From Zenitel Wiki
The ASLT board contains circuitry for 6 subscriber connections and one measurement channel for voice switching control. It plugs into any position 1 - 23. The board provides 6 remote control outputs that are software-controlled. The line monitoring reports errors on all subscriber lines. The board can be plugged in/out while the exchange is running. A hot plug-in cable is needed for this purpose. The cable is included in the cable set for the exchange. All signals for external equipment is run to a connection board mounted on the connection field of the exchange.
Contents
Features
- Can be used with InterGuard, TouchLine and Pamex stations.
- Each board provides 6 subscriber connections
- 6 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
AlphaCom E20/E26
Intercom stations and control outputs are connected to a connection board mounted on the exchange connection field. 2 pc subscriber connection boards (1009930200) with 1.5 m connection cables (1009501011) are delivered with the exchanges.
5 m (1009501021) and 10 m (1009501023) subscriber connection cables can be purchased separately. These cables are un-terminated, color code is packed with the cables.
AlphaCom E7
All intercom stations are connected by means of pluggable screw terminals on the exchange back-plane. Line points 5 and 6 are by default used as program distribution inputs on line c-d when an ASLT board is placed in board pos. 1. - The jumpers P5 and P6 are set to pos 2-3. - The potmeters P5 and P6 are used to adjust the input level. Line points 5 and 6 can also be used as normal subscriber points. - Set jumpers 5 and 6 to pos 1-2 - In AlphaPro, select Exchange & System >Boards - Change the port setting from ‘Audio program feed’ to ‘Default’ - Reset the exchange The RCO outputs 1-6 are associated with the board in pos. 1, and RCO 7-12 with the board in pos. 2.
Cabling
Desktop stations are connected to the line on RJ45 wall sockets.
Compability
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.
Technical Specifications
| Order Number | 100 9101 010 |
| Operation Voltage: | 5, 15 24, 32 V DC |
| Dimensions (WxHxD): | 10mm x 230 mm x 263 mm <br\> 0.39" x 8.97" x 10.26" <br\> Double Extended Europe Format |
| S/N ratio (conversation): | 60 dB |
| Minimum impedance loudspeaker: | 20 ohm |
| Input impedance (c-d): | 600 ohm |
| Frequency range: <br\> Conversation <br\> Program distr. | <br\> 200 - 10,000 Hz <br\> 20 - 15,000 Hz |
| Crosstalk at 1 kHz | <-80 dB |
| Capacity for each ASLT board: | 6 subscrivers |
| Duplex-controlled conversations: | 1 voice-switched conversation per board |
| Remote control outputs | 5V 2.2 Kohm |
| Cable type: | 2-pair twisted cable per station |
| Max. cable length to station: <br\> | 2 km ( 0.6mm2 - 22 AWG )<br\>1.4 km ( 0.5 mm2 - 24 AWG) |
| Distortion: | <2% |
| Output power: <br\><br\> | 3-4 W at 20 ohm <br\> 0.6W at 20 ohm <br\> 1W at 63 ohm |
| Indicator: | LED (red/green/amber) |