Stentofon intercom systems after 1990 and still sold today .
Zenitel, Stento, Stentofon , Vingtor Marine AlphaCom / ACM ( Stentofon AlpaCom inside )
Stations with or without display . All VMP / Stentofon stations can be used. Star wireing configuration - 4 wires separately to every station.
The ACM / AlphaCom is a smart choice when your VMP / MPC
exchange has to be replaced . Standard sizes: 138 , 80 and
36 (AlphaCom M) .
Earlier AMC boards used COM ports to connect external
Later AMC boards also have a RJ45 network connection, using IP addresses to access a network with external systems and functions.
The Stentofon AlphaCom / Vingtor Marine ACM ( AlphaCom inside ) was introduced in the early nineties and these exchanges are still sold today . They are compatible to the MPC / VMP system stations and wireing . It's also easier to connect display stations to the AlphaCom / ACM system . Like the MPC / VMP exchanges with PMF / PMF-R proccesorboards, the AlphaPro / ACM exchange has an "userdata Backup / Restore" procedure , to make a backup on onboard eeprom(s) .
The most important notice!
Power OFF when plugging !
Like replacing boards in a computer , to avoid serious damage on the exchange electronic boards allways turn off the power before replacing any board in the exchange !!
|AMC-IP||Module Control Board , from 2008 , The IP filterboard has RJ45 network connectors and com ports.|
|AMC ver 9.12||Module Control Board , older systems + ACM-M without RJ45 network connector.|
|AMC ver 01.04||Module Control Board , older systems , software up to 7.xx|
|APC ver 01.xx||Program & Clock Board , Master clock and 6 x program inputs|
|ASLT-2||Subscriber Line Board , Filterboards also for 6 x RJ45 connectors, easy to use on Cat5 network|
|ASLT||Subscriber Line Board , Standard filterboards is connected to SUBCB|
|ASVP||Stored Voice Message / Playback|
|APF||Program Feed Board|
|AGA||Audio Interface Board|
Self service / fault finding on Stentofon AlphaCom and Zenitel Marine ACM ( AlphaCom inside ) .
Fans must work , check air inlets /
PWR supply: All 4 Led's must be ON
Power OFF when plugging / unplugging any board inside the exchange. If done with power ON: the actual board is damaged beyond any repair + possible damage to other boards!
Check exchange hardware status:
Blinking Green light
OK processor board
Steady Green light
OK line board and stations / lines
Blinking Green light
OK line board , check lines stations
Steady Green light
OK Stored Voice Message / Playback Board
There is no LED on the Master Clock / Program Board
Five minutes after turning Power ON: If one ore more of these indicators don't turn green, expect hardware failure inside the exchange.
Picture is of a Stentofon AlphaCom 112 used in our workshop.
Programming and advanced fault finding / repairs : Ask us, we have the knowhow ( domestic / international service )
ACM-M series is the smallest exchange. 1 x AMC-IP board + maximum 6 x ASLT boards
How we connect subscriber lines to this exchange.
Using railmounted subscriber line connectors placed close to the exchange and flexible wireing to the exchange connectors.
Common problems : Backup battery on the AMC board .
General programming preparation , what must be known before programming .
Sorting out what's inside the exchange : Version of running software on the Processor board, Stored Voice Message Playback Board, standard boards / extra function boards, internal wireing schematic to local terminal numbers .
What's connected to the exchange : stations , stations catalog number , remote equipment and other hardware connected , ref. to terminal numbers inside the exchange .
Programming : by using a pc with AlphaPro software . To make meaningful programming , repeated training and good system knowledge is a must .
AMC board service hints . Easy service. Changes in the programming .
Note! It's a must to have a permanent backupfile available . AMC backup battery lifetime often is found to be less than 10 years !
Check lines +
stations status: Use a station with display to make this control . Read
address and catalog number.
NOTE! 10 years service interval of user program & backup circuitry.
Have a backup ready before replacing the battery on the AMC board.
Backup to flash eeprom on the AMC board ( 28F010 ) = Dial from Super User : 7820 + M .
It's smart to make an extra backup on a new flash eeprom ( 28F010 ) = Dial from Super User : 7820 + M .
Measure the 3.6Volts backup battery , in case of low battery voltage or old battery it must be replaced .
Restore from backup = Dial from Super User : 7819 + M
GND connection failure . Easy to fix.
Stentofon AlphaCom / Zenitel Marine ACM : extra function boards & related info.
|PDB||Power Distribution Board|
|MRBD||Multi Relay Board w/Drivers|
|FBSAR||Filter Board Speach Adapter Relay|
|MADER||Microphone Amplifier for Dynamic & Electret microphone w/Relay|
|RIO||Remote control I/O Controller + IIC Connection Board|
|PA 20W||20W power amplifier, from early 80's|
|PA 20W w / VOX||20W power amplifier w / VOX , from mid 90's|
|PA 30W InterGuard||30W power amplifier InterGuard , early 90's|
|PA 60W InterGuard||60W power amplifier InterGuard , from mid 90's|
subscriber connection board w / RCO connector SUBCB
subscriber connection board w / RCO
RCO's uses positive logic, ( Off = 0VDC , ON = +5VDC )
Download catalog from Zenitel
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