User guide

Chapter 4 – Configuring Your MultiVOIP
50 MultiVOIP® Voice/Fax over IP Gateways
FXO Supervision Parameter Definitions
Field Name
Values
Description
Answer Supervision fields
Current Reversal
Y/N
When this option is selected, the FXO interface sends notice to make
connection upon detecting current reversal from the PBX (which occurs
when the called extension goes off hook).
Answer Delay
Y/N
When this option is selected, the FXO interface sends the connection notice
to the calling party only when the Answer Delay Timer expires. The
connection notice is sent regardless of whether or not the called extension
has gone off hook.
Answer Delay
Timer
1 – 65535
(in seconds)
When Answer Delay is enabled, this value determines when the FXO
interface sends the connection notice.
Tone Detection
Y/N
When selected, call disconnection is triggered by a tone sequence
Available Tones
dial tone,
ring tone,
busy tone,
unobtainable tone
(fast busy),
survivability tone,
re-order tone
List from which tones can be chosen to signal call answer.
Answer Tones
any tone from
Available Tones list
Currently chosen call-answer supervision tone.
Disconnect Supervision fields
There are four possible criteria for disconnection under FXO: current
reversal, current loss, tone detection, and silence detection. Disconnection
can be triggered by more than one of the three criteria.
Current Reversal
Y/N
Disconnection to be triggered by reversal of current from the PBX.
Current Loss
Y/N
Disconnection to be triggered by loss of current. That is, when Current Loss
is enabled (“Y”), the MultiVOIP hangs up the call at a specified interval after
it detects a loss of current initiated by the attached device.
Current Loss Timer
200 to 2000
(in milliseconds)
Determines the interval after detection of current loss at which the call is
disconnected.
Silence Detection
Enable
Y/N
Enables/disables silence-detection method of supervising call disconnection.
Silence Detection
Type
One-Way or
Two-Way
Disconnection to be triggered by silence in one direction only or in both
directions simultaneously
Silence Timer in
seconds
integer value
Duration of silence required to trigger disconnection.
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