1.8 Telephone Line & Volume Control Settings
1.8.1 DTMF Transmit Level (A)
The DTMF transmit level can be adjusted. It is recommended that this feature is not altered from the
factory default setting unless the unit is having difficulty dialling.
1.8.2 Line Receive Level (B)
The line receive level adjusts the level of the incoming signal. This should be adjusted to achieve a
nominal 80dB level at the speaker when the unit is conversation. Adjust this level at single increments
until the best result is achieved.
1.8.3 BUS Transmit Level (C)
Adjusts the gain of the audio signal level to all connected stations.
1.8.4 BUS Receive Level (D)
Adjusts the gain of the audio signal from all connected stations.
1.8.5 Busy Tone Cadence (E)
Some systems have different busy tone cadences that will not be detected by the default setting. This
setting can be changed if the unit is connected to a system that has a busy tone consisting of short
pules or tone bursts.
1.8.6 Programming the Telephone Line & Volume Control Settings
To program the telephone line and volume control settings, once values are defined, enter the
following sequence:
Table 5 - Telephone Line Settings & Volume Control
To playback these settings, enter the following sequence:
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