ENUK - V1.4 - 25/01/17
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4000 Series GSM Audio Intercom - Technical Manual
4000 Series GSM Audio Intercom with Proximity
Additional User Information
UNDERSTANDING THE SIGNAL STRENGTH (SIG)
When a request for signal strength message is sent to the GSM PRO intercom panel it will reply with a 4 digit code. The code is bro-
ken down into two parts, a signal strength code which will be between 0 – 31 or 99. Ideally the signal strength should be as close
to 31 as possible. The lower the number, the weaker the signal. Signal strengths lower than 10 may cause operational problems
such as loss of speech quality (and possibly missing DTMF tones) and network loss. A signal strength of 99 indicates it could not be
detected. The second part of the code is the BER (bit error rate). Ideally the BER code should be as close to 0 as possible, the lower
the BER the better. The example below shows the reply to expect from the GSM PRO:
SIGNAL
=
31
BER
=
0
OK
VIDEX
GSM
DIALLING INTO THE GSM INTERCOM FROM ANOTHER TELEPHONE
There are three possible outcomes to dialling into the GSM PRO intercom depending on the telephone number you are dialling
in from and the features setup during programming. The three possible outcomes are shown in the table below and are shown
in order of priority. For example, if the number is programmed to automatically activate the relay, this will take priority over the
following two options and if the telephone number is stored as a telephone number called from one of the push buttons, this will
take priority over the last option.
FUNCTION
REQUIREMENT
PRIORITY
Dial in to open the Door.
After dialling the GSM number, the relay will activate
and the call will be dropped.
The telephone number of the telephone dialling
in must be stored in memory location
(
dial to open
list) STR000 - STR999.
1st
Dial in to activate a call (live speech, activate relay/
auxiliary AO1, AO2).
After dialling the GSM number, the call will be
answered and two beeps will be heard. The speech will
then be live.
The telephone number of the telephone dialling
in must be stored in memory location:
STN001 - STN050
STD001 - STD050
STE001 - STE050
STF001 - STF050
2nd
Dial in to open the speech from a telephone number
not stored in the GSM intercom.
After dialling the GSM number, the call will be answered
and two beeps will be heard. You will then be required
to enter the 4 digit code to open the speech.
If neither of the two requirements above are met.
3rd
UNDERSTANDING THE BEEPS
Functions and errors are indicated by beeps from the GSM PRO intercom panel. The following will help you understand the different
beeps heard and what, if anything, needs to be done in response to the beeps.
BEEP
REASON
SOLUTION
Short beeps at 1 second
intervals.
Relay or auxiliary output activated.
None, this is normal.
Single short beep while
the system is in standby
and not being used.
A valid text message has been received and
processed.
None, this is normal.
Two short beeps followed
by a long beep.
Button pressed but no number stored.
Program a telephone number for the button
pressed.
Long beep followed by
short beep while the
system is in standby.
Invalid text message received.
If this has happened when sending one of the
programming text messages then check the
message for errors. These beeps will also be heard
if the 4 digit code in the text message is incorrect. If
you are unsure of the 4 digit code, try resetting it to
1111.
Long beep followed by
short beep while the
system is in use.
Manually ending a call by pressing a call button.
None, this confirms the call has been cancelled.
Another call can be placed if required.
