User guide

Chapter 4—Configuring your VOIP
Multi-Tech Systems, Inc. 37
FXO Supervision
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 will be 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.