ATA Voice Field Reference
PSTN Line page (SPA3102)
Cisco Small Business ATA Administration Guide 211
B
PSTN Disconnect Detection section
PSTN Ring Thru
CWT Delay
Specify the delay before incoming PSTN calls will ring Line
1 using a Call Waiting
Tone. The default is .
PSTN Ring Timeout Specify the delay after a ring burst before the Gateway
decides that the PSTN ring has ended. The default is .
PSTN Dialing Delay Specify the delay after the PSTN phone line is on-hook
before the Gateway dials a PSTN number. The default is .
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 .
PSTN Hook Flash
Len
Default is .25.
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
If 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
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 .
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