Link Configuration
devices.
Valid range 20 to 2000 milliseconds in 20 ms increments. Default 200.
Remote PTT Keying &
Analog-to-VoIP Audio
Gating
This determines what causes the remote Push-to-talk (PTT) of the paired link to be
activated. The choices are Local VOX, Local COR, or Local VOX & COR.
The default value is Local VOX, which causes this link to use VOX to detect an
incoming call. If incoming call detection is accomplished by way of a COR signal,
configure this setting for Local COR. To combine COR with VOX for call
detection, select Local VOX & COR.
Incoming call detection based on COR Input is passed on to the connected
equipment; it does not mute audio. For example, if the connected equipment were
a radio dispatch console, it could be used for call indication at the console.
VOX Threshold This parameter is only available if COR Input is set to Unused, Active High
w/VOX, or Active Low w/VOX.
The threshold for VOX activation. When the receive audio level (sine wave)
exceeds this threshold, audio is passed to the workstation.
Valid range -35 dB to 0 dB (in 1 dB increments). Default -25.0 dB.
VOX Hold Time This parameter is only available if COR Input is set to Unused, Active High
w/VOX, or Active Low w/VOX.
The time, in milliseconds, between (a) the instant that the receive audio signal
drops below the VOX activation threshold and (b) the instant that the device stops
transmitting voice. Helps prevent small pauses in speech from deactivating VOX
prematurely.
Valid range 100 ms to 10000 ms (in 100 ms increments). Default 10000 ms.
VOX Attack Time This parameter is only available if COR Input is set to Unused, Active High
w/VOX, or Active Low w/VOX.
The time, in milliseconds, between (a) the instant that the receive audio signal
exceeds the VOX activation threshold and (b) the instant that the device starts
transmitting voice. Helps prevent stray noise from activating the VOX.
Valid range 5 to 50. Default 10 ms.
Radio Control
PTT Maximum Duration This is the maximum duration allowed for PTT Output to be active. If PTT
remains active for this duration it will automatically be made inactive. Once this
occurs PTT can not be made active again until the remote source goes inactive and
again active.
If Forced Reconnect is enabled, PTT Max Duration must be set to “0”.
Valid range 0 to 300 seconds. Default 1 minute. Set to 0 to disable.
VoIP Drop Out for PTT
Release
When local PTT is active and VoIP traffic ceases for this duration, PTT is forced
inactive. This is helpful should the PTT inactive message from the remote paired
link be lost in the IP network. Once this timeout occurs PTT can not be made
active again until the remote source goes inactive and again active.
42 025-9631D.1
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