User guide
Doortello Business
Issue 1.00
Page 14
key pad module) you can follow the start up procedure sequence as following
described:
- Red LED is on: main processor is activated, the telephone line is checked (voltage,
noise);
- Red and green LED are on: the RISC processor is activated and will be
synchronised with the main;
- Red LED is on: the memory is checked, if no data are stored a default data load is
executed, if data are already stored they will be uploaded from the flash to the
working memory;
- Both LED are off: the device is now ready to work.
Power from telephone line only
- Connect the analogue telephone line;
- Call the unit;
- After a few calls (between 3 and 10) the unit will answer the call;
- The unit will now go through the initialisation procedure as described above;
- An the end the call will be terminated and you will get a busy tone;
- The device is now ready to work.
Please note!
If the door phone is powered from the telephone line only it can happen that
after a power failure or the disconnection of the telephone line that the
device will take some minutes before it will be ready again to work. If you
want to shorten this time you have to go the above described procedure
again. Refer also to the chapter
Power supply over the telephone line
for
more details.