QUASAR CODES 3140 - DTMF Telephone Relay Switcher
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Commands 3-7 require additional data. After the
command is entered the unit will issue a single, short
beep as a prompt for the data. Enter the required data
followed by # to finish. A description of the data to be
entered is given in the section “USER SETTINGS”.
WHAT DO THE BEEPS MEAN?
The beeps are used to acknowledge commands, prompt
for more data or indicate errors.
•
4 short beeps
- valid command entered.
•
2 short beeps
- command aborted by user
•
1 short beep
- more data required
•
1 long beep
- command error
•
3 long beeps
- disconnecting (hanging up)
A "forced disconnect" command will cause 3 long
beeps to be sent back to the user before the switcher
hangs up.
USER SETTINGS
These are stored in non-volatile memory (EEPROM)
and are not affected by loss of power.
None of these settings are defined initially - they have
to be 'set' to their default values before you can use the
kit (see “USING THE KIT FOR THE FIRST TIME”).
Password (4 - 8 digits)
From 4 to 8 digits long using any number from 0 to 9.
Tamper setting (0 - 9)
The number of attempts allowed at entering a valid
password. A value of 0 disables this feature
(unlimited).
If the tamper setting is exceeded then the unit will
automatically disconnect and go into ‘lockout’ if
enabled (see Lockout time).
Number of rings to answer (0 - 9)
Number of incoming rings required before the unit will
automatically answer the call. A value of 0 disables
this feature (does not automatically answer).
Valid ring is defined as having an "off" time of more
than 1 second between each burst of ring. So the
American single ring, and the European double ring
are both seen as a single ring.
If the caller hangs up BEFORE the number of rings to
answer have been received then the unit will wait 10
seconds before 'resetting' itself to wait for the next call.
When this feature is disabled the unit expects the the call
to be answered 'externally', eg. by an answering machine.
Everything else works as normal, including entering a
valid password. The only difference is that it does not
automatically answer the incoming call.
Auto hangup time (00 - 99 seconds)
This is the length of time that the unit will wait for a
VALID command. If this time is exceeded then the unit
will automatically disconnect itself (hang up) from the
call. A valid command includes entering a correct
password at the start. A value of 0 disables this feature
(no auto hangup).
Note:
Do not set this value too short – the user will need
time to enter their commands!
Lockout time (00 - 99 minutes)
This only comes into effect when the tamper setting has
been exceeded on the PREVIOUS call.
This is the length of time that the unit will wait AFTER
disconnecting (hanging up) before it will answer the next
call. A value of 00 disables this feature (no lockout).
For example, suppose the tamper setting is 3 and the
lockout time is set to 10. The unit receives a call and
answers it. If a valid password is NOT entered in 3
attempts the unit will disconnect (hangup) and then wait
for 10 minutes before it will answer any further calls. In
other words, further calls a 'locked out' for 10 minutes.
This security feature helps prevent multiple attempts at
'hacking' into the unit by introducing a delay time
between calls being answered.
WHAT IF I FORGET MY PASSWORD?
In this case you will need to follow the procedure in
“USING THE KIT FOR THE FIRST TIME”. This will
reset the password to 0000. However it will also reset all
the user settings to their default values. You will have to
re-enter them as required.
IT DOESN’T WORK – WHAT DO I DO?
1. Check that all components are in their correct place
and the correct way around. Check for unsoldered
joints and solder bridges or splashes.
2. Is the 5V supply OK?
3. Any IC legs bent up under the IC body?
4. Is the phone line cable using the two inner pins on
the RJ-11 plug?
Is a broadband filter needed?