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Chapter 4 - MultiVOIP Software
E&M Interface
The E&M Interface is used to connect PBX E&M trunks. You will need to select between Dial Tone or
Wink signaling and also between 2-wire and 4-wire mode. If wink signaling is selected, the wink timer
field becomes active with a range from 100 to 350 milliseconds. Contact the personnel in charge of
your PBX to determine the proper configuration of these settings.
FXO Disconnect On
The FXO Disconnect On option applies when two MultiVOIP 200s are used in an FXO-to-FXO
configuration. When you have an FXO-to-FXO configuration, you need to determine the method of
terminating the call. Three methods of terminating the call are provided: Current Loss, Tone
Detection, or Silence Detection. Current Loss is the preferred method.
Current Loss has to be supported by your PBX or local telephone company. Current Loss
terminates the call when the PBX or local telephone company switch detects a person hanging up the
phone and opens the local circuit for a minimum of 600 milliseconds.
Tone Detection terminates the call when the party who wishes to disconnect enters a one or two
digit sequence on the telephone keypad. Valid digits are zero to nine, *, #, and A thru D.
Note: A through D are extended DTMF tones supported by some PBX or central office equipment
and are not the same as letters a - d on the standard telephone key pad.
Silence Detection can be silence in one direction or silence in both directions for a specified amount
of time. The amount of time is defined by the entry in the Silence Timer. The range of the Timer is
from one to 65535 seconds (roughly 18 hours). The default is 15 seconds.
Ring Count
This field enables you to enter the maximum number of rings output on the FXS interface (default is
8) before hanging up and releasing the line to another call or the number of rings (default is 2) that
must be received before the FXO port answers an incoming call.
A setting of 0 (zero) on the FXS interface disables the generation of rings. The caller will receive a
"Busy" tone.
A setting of 0 (zero) on the FXO interface causes the FXO port to ignore rings from the attached PBX
or exchange, disabling access to the MultiVOIP 200.
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