Specifications

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Linksys IP Phone Administrator Guide
Document Version 3.2
Chapter 5 Linksys ATA Field Reference
PSTN Line Tab
International Control (Settings)
(PSTN) Long Silence Duration This 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 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 default is 480@-30,620@-30;4(.25/.25/1+2).
Field Description
Field Description
FXO Port Impedance Desired impedance of the FXO Port. Choose from {600, 900, 270+.
The default is 600.
Ring Frequency Min Specify the lower limit of the ring frequency used to detect the ring signal. The default is
10.
SPA To PSTN Gain dB of digital gain (or attenuation if negative) to be applied to the signal sent from the SPA
to the PSTN side. The range is -15 to 12.
The default is 0.
Ring Frequency Max Specify the higher limit of the ring frequency used to detect the ring signal. The default
is 100.
PSTN To SPA Gain dB of digital gain (or attenuation if negative) to be applied to the signal sent from the
PSTN side to the SPA. The range is -15 to 12.
The default is 0.