Programming manual
Programming the phone 63
11-1-1
Telephone line adjustment
The “Outgoing voice volume” and “Incoming voice volume” parameters can be used to correct
the voice functions of the dialer and DTMF tones (refer to Table 4-3: Control panel options).
The values of these parameters affect each other, therefore, and a good result is always a
compromise.
If you are not using a GSM interface, you should:
• Adjust one parameter at a time and carry out tests to verify the result.
• Increase/decrease the values in small steps (for example, from 25 to 22 and not from 25
to 15).
• If the DTMF tones are not recognized, or are recognized with difficulty, decrease the value
of the “Outgoing voice volume” parameter (in small steps of 2 or 3 units) and verify the
effect. If there is no improvement, increase the value of the “Incoming voice volume”
parameter until an acceptable level is achieved.
• Do not increase the “Incoming voice volume” parameter excessively, as an excessive value
may cause incorrect interpretation of DTMF tones.
• If the volume of the phone messages is low, increase the “Outgoing phone voice volume”
parameter (a little at a time, by 1 or 2 units) and check the effect; a high value of the
“Outgoing phone voice volume” parameter can lead to an incorrect interpretation of the
DTMF tones.
In most cases, the value of the “Outgoing voice volume” parameter is between 15 and 25,
whereas, the value of the “Incoming voice volume” parameter is between 20 and 30.
If a GSM SmartLinkAdv interface is present, it is possible to further adjust the input and
output volume of the signal using the SmartLinkAdv parameters.
Note
Changes to the SmartLinkAdv input volume will take effect 2 minutes after the new value is set,
therefore, you must wait before carrying out tests.
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