User guide

Section 9: PBX
9-3
2. Disconnect string – Some PBXs will send a string of touch-tones
immediately before dropping the call (but not necessarily drop
the current).
To detect this string, in PBX --> Parameters --> Disconnect
Detection --> Disconnect string field, enter the required
string.
If the string is unknown to you, use a touch-tone grabber to
detect the digits or consult technical support.
NOTE
The Micro detects a continuous noise. To
trigger this mechanism, any noise with suffi-
cient length will do. As a result, if this
parameter is set to a low value, false dis-
connects will occur, especially if the caller
speaks very fast (and has no interval
between words, therefore generating con-
tinuous noise) or the caller is calling from
an unusually noisy environment (for exam-
ple, a street pay phone or a cellular phone).
If false disconnects occur, increase the
value of the Max-Non Silence parameter.
3. Dial tone – After dropping the call, the PBX will put dial tone on
the analog port of
e
maGEN
.
To detect this, in PBX --> Parameters --> Disconnect Detec-
tion --> Dial Tone --> Max no silence field, enter the number of
seconds of dial tone after which
e
maGEN
should disconnect. 5
seconds is the recommended value.
4. No indication – In rare cases the PBX will not report disconnect
to
e
maGEN
, and the line will simply turn silent. Since there is
then no way for
e
maGEN
to know the line is disconnected, it
will keep on playing until it times out. This usually will take up to
30 seconds.
To avoid “phantom” calls from getting to the attendant’s console,
use the voice detection parameter (PBX --> Parameters -->
Disconnect Detection --> Silence --> Caller detection field).
When voice detection checked,
e
maGEN
will require the caller
to say “yes” before transferring to the attendant (only when no
touch-tone was pressed at the main menu).