Linksys ATA Administration Guide
153
PSTN Line page (AG310 and SPA3102)
Voice tab > PSTN Line page >
PSTN Disconnect Detection section
PSTN Dialing Delay
Specify the delay after the PSTN phone line is on-hook before the Gateway
dials a PSTN number. The default is
1
.
PSTN Dial Digit Len
Specify the on/off time when the Gateway transmits digits through the Line
(FXO) port. The syntax is on-time/off-time, expressed in seconds with up to
two decimal places. The permitted range is 0.05 to 3.00. The default is
.1/.1
.
PSTN Hook Flash Len
Default is
.25
.
Field
Description
Detect CPC
CPC is a brief removal of tip-and-ring voltage. If enabled, the SPA will
disconnect both call legs when this signal is detected during a gateway call.
The default is
yes
.
Detect Polarity Reversal
If enabled, SPA will disconnect both call legs when this signal is detected
during a gateway call. If it is a PSTN gateway call, the 1st polarity reversal is
ignored and the 2
nd
one triggers the disconnection. For VoIP gateway call,
the 1
st
polarity reversal triggers the disconnection.
The default is
yes
.
Detect (PSTN) Long
Silence
I
f enabled, SPA will disconnect both call legs when the PSTN side has no
voice activity for a duration longer than the length specified in the
Long
Silence Duration
parameter during a gateway call
The default is
yes
.
Min CPC Duration
Specify the minimum duration of a low tip-and-ring voltage (below 1V) for
the Gateway to recognize it as a CPC signal or PSTN line removal. The default
is
0.2
.
Detect Disconnect Tone If enabled, SPA will disconnect both call legs when it detects the disconnect
tone from the PSTN side during a gateway call. Disconnect tone is specified
in the
Disconnect Tone
parameter, which depends on the region of the PSTN
service.
The default is
yes
.
Field
Description