Setting Up
5-30 9161-A2-GH30-30
April 1998

Table 5-6. FXS Voice – Slot ss Port p Options (2 of 4)

Signaling Type
Possible Settings: Loop-Start, Loop-Start/Fwd Disc, Ground-Start,
Ground-Start-Immediate, Ground-Start-Automatic, d3, d4
Default Setting: Loop-Start
Determines the type of signaling for the FXS voice port.
Signaling Type only appears if:
Port Status is set to Enable.
Operating Mode is not set to DPO.
Loop-Start – Enables the signaling used for basic telephone service stations, simple
PBX trunks, or key systems. Loop Start only appears if Operating Mode is set to FXS,
FXSDN, or FXSDN/WINK.
Loop-Start/Fwd Disc – Enables the signaling used for automated answering
equipment. This selection only appears if Operating Mode is set to FXS, FXSDN, or
FXSDN/WINK.
Ground-Start – Enables the signaling used for two-way PBX trunks. Helps to prevent
“glaring”, i.e., call collision. This selection only appears if Operating Mode is set to FXS,
FXSDN, or FXSDN/WINK.
Ground-Start-Immediate – Enables the signaling used for fast response time to the
PBX or station. This selection only appears if Operating Mode is set to FXS.
Ground-Start-Automatic – Enables the signaling used for fast response time to the
central office. This selection only appears if Operating Mode is set to FXS.
d3 – The APM meets the pre-1988 specifications for PLAR circuits. This selection only
appears if Operating Mode is set to PLAR.
d4 – The APM meets the post-1988 specifications for PLAR circuits. This selection only
appears if Operating Mode is set to PLAR.
Terminating Impedance (ohms)
Possible Settings: 600, 900
Default Setting: 600
Determines the terminating impedance (in ohms) for the port.
Terminating Impedance only appears if Port Status is set to Enable.
600 – The terminating impedance is 600 ohms.
900 – The terminating impedance is 900 ohms.
Wink Delay (10 ms)
Possible Settings: 1 – 99
Default Setting: 15
Determines the amount of delay before the wink signal is generated towards the
network, and when an off-hook signal from the CO is detected in increments of
10 milliseconds.
Wink Delay only appears if:
Port Status is set to Enable.
Operating Mode is set to FXSDN/WINK.
10 to 990 – The valid range is from 10 to 990 ms, in 10 ms increments. The settings are
numbers between 1 and 99, representing such increments. The default is 15, for a wink
delay of 150 ms.