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Auto-Disconnect: Select the auto disconnect mode to control when the unit disconnects a connected call. Modes
include Loop Drop + Call Progress, Call Progress, and Loop Drop, and Off. The default is Loop Drop + Call
Progress. (Not used in VoIP Settings)
Ring Type: Select from three different ring tones (Type 1, Type 2, Type 3). To test a particular tone, click Test after
you have selected the tone.
Note: VH20 Units have five selectable ring types.
Telco Adaptation: Some applications require the unit to adapt to line conditions using a white-noise burst (Noise)
rather than automatically (Auto). The default is Auto. (Not used in VoIP Settings)
Hook Flash: Sends a momentary interruption in the line seizure, allowing activation of options such as 3-way
calling, call waiting, and call hold. This feature is dependent on the services offered by your telephone company.
You can set the duration of the hook flash using the slider or the selector box. Range is 50ms to 2 seconds in 10ms
steps. The default is 250ms.
DTMF Level: This feature allows you to adjust the DTMF tone level in relationship to the participant audio level
in the room. The level can be adjusted in 1dB steps from a nominal level of 0dB to plus or minus 12dB in 1dB
increments. The default is 0dB.
Audible Ring Indication: When this feature is enabled, an audible ring is heard for incoming calls. The level
adjustment allows you to customize the level in relationship to the participant audio level in the room. The level can
be adjusted in 1dB steps from a nominal level 0 (default) to plus or minus 12dB in 1dB increments. The default is
0dB.
Audible Hook Indication: When the unit goes off hook (connects) a beep is injected into the receive channel and
transmit channel of the unit. When the unit goes on hook (disconnects), a series of two beeps is injected into the
receive channel to indicate that the call has been dropped.
Ringer Cadence: (Not used in VoIP Settings)
Standard: Uses the cadence specified in the Country Code to detect the standard ring cadence per country.•
Custom: Set for distinctive ring cadences. When custom is set, the • Min On and Min Off times must be
selected from their respective drop-down boxes. PBX’s can have distinctive ring cadences that are not
country specific. These times are the minimum values the ring cadence must be for the unit to detect the
ring. If the ring cadence signal provided by the PBX is greater than the custom settings, the unit will detect
the ring.
