Linksys ATA Administration Guide
154
PSTN Line page (AG310 and SPA3102)
(PSTN) Long Silence
Duration
This value is minimum length of PSTN silence (or inactivity) in seconds to
trigger a gateway call disconnection if
Detect Long Silence
is yes.
The default is
30
.
Silence Threshold
This parameter adjusts the sensitivity of PSTN silence detection. Choose from
{very low, low, medium, high, very high}. The higher the setting, the easier to
detect silence and hence easier to trigger a disconnection.
The default is
medium
.
Disconnect Tone
This value is the tone script which describes to the SPA the tone to detect as
a disconnect tone. The syntax follows a standard Tone Script with some
restrictions. Default value is standard US reorder (fast busy) tone, for 4
seconds.
Restrictions:
•
2 frequency components must be given. If single frequency is desired,
the same frequency is used for both
•
The tone level value is not used. –30 (dBm) should be used for now.
•
Only 1 segment set is allowed
•
Total duration of the segment set is interpreted as the minimum
duration of the tone to trigger detection
•
6 segments of on/off time (seconds) can be specified. A 10% margin is
used to validated cadence characteristics of the tone.
The Disconnect Tone Script and Impedance value for various countries
follow:
US
—480@-30,620@-30;4(.25/.25/1+2) —
Impedance
: 600
UK
—400@-30,400@-30; 2(3/0/1+2) —
Impedance
: 370+620
France
—440@-30,440@-30; 2(0.5/0.5/1+2) —
Impedance
: 270+750||150nF
Germany
—425@-10; 10(0.48/0.48/1) —
Impedance
:220+820||120nF
Netherlands
—425@-30,425@-30; 2(0.5/0.5/1+2) —
Impedance
: 600
Sweden
—425@-10; 10(0.25/0.25/1) —
Impedance
:600
Norway
—425@-10; 10(0.5/0.5/1) —
Impedance
: 600
Italy
—425@-30,425@-30; 2(0.2/0.2/1+2)—
Impedance
: 220+820||120nF
Spain
—425@-10; 10(0.2/0.2/1,0.2/0.2/1,0.2/0.6/1) —
Impedance
:
220+820||120nF
Portugal
—425@-10; 10(0.5/0.5/1)—
Impedance
:220+820||120nF
Poland
—425@-10; 10(0.5/0.5/1)—
Impedance
: n/a
Denmark
—425@-10; 10(0.25/0.25/1)—
Impedance
: 600
Field
Description