DSS Eurocom 612, Инструкция по установке и программированию

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I n s t a l l a t i o n & P r o g r a m m i n g M a n u a l
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Anti-static precautions should be taken before handling these boards as they could be damaged by
electrostatic build up.
Repair Procedures
On site repair is limited to replacement of system option boards or the main board.
The boards which maybe replaced by a trained and competent installation engineer are:
Main 2+8 board
0+2, 1+2 & 2+2 expansion cards
Fax / voice card
V24 card
ISDN card
CLI detector card
Meter Pulse detector card.
25Hz ringer card
Telephone repair on site is limited to replacement of handsets, line cords and handset cords.
Problem Solving
Green LED not on
Check mains fuse and power connection. Led should flash 10 seconds after power up. It will light
steadily after the pin code is set. If power is ok then check that the system EPROM is correctly fitted.
If not then replace, ensuring that the pins are all seated correctly. If green LED does not flash then
check the system voltages on the test pins labelled SK33 located between the music on hold jack and
the RJ11 connector (if fitted). If any of the 24, 12, 6 or 5 volt rails are low then power the system
down, remove all option cards and phones to establish if one is faulty before powering back up. If a
faulty expansion card or terminal is not found and if the power is not restored on the test pins then
return the unit to the dealer.
No dial tone on extensions
Check that sockets are correctly wired. Check that the system has been correctly configured for 2+8,
4+10 or 6+12 operation, as described. Remember that the system terminals are polarity sensitive.
No dial tone when you access an external line
Check that PSTN dial tone is on the exchange line by connecting directly to the line at the master
socket.
Check that class of service 5 is not assigned to the extension. Check that dial tone is given when you
select a B channel directly on an ISDN terminal connected to the S bus. If not make sure the ISDN
bus is not set for data calls only, without dial tone. If the analogue line is not connected and if you are
using ISDN then make sure you have programmed the system to select ISDN channels first.
Extension is not ringing on incoming exchange line calls
Check that the correct ringing assignment has been made. Default is that all extensions ring on
incoming calls. If there is an interrupted dial tone then Do Not Disturb, Internal Diversion or
External Call Forwarding may be active. Check that the extension is not fitted with a single line
telephone but programmed as a Terminal. Dial *750 EXT # at the extension where EXT is the
extension number to ensure correct ringing on single line telephones.