ZyXEL Communications MSC1024G Series User Manual page 556

Chapter 18 VoIP
Figure 382 The VoIP > Countrycode Screen
The following table describes the labels in this screen.
Table 292 The VoIP > Countrycode Screen
LABEL
Country
Apply
Cancel
Detail
Country
Impedance
Coding Type
Loop Current
Tax Type
Ring Parameters
Frequency (0.1Hz)
Amplitude (0.1Vrms)
On Time 1 (s)
556
DESCRIPTION
Select the country in which the system will be used.
Click this to save your changes and display the region-specific VoIP
settings below.
Click this to return this screen to its last-saved values.
Click this to display information about the system's current pulse, meter
and tone parameters not displayed in this screen (see
page 557).
This field displays the country you select from the Country drop-down list
box.
Displays the line impedance or impedance range in ohms.
This displays either alaw or ulaw. The a-law companding algorithm is
commonly used in Europe, while the u-law (mu-law or µ-law) algorithm is
commonly used in the USA and Japan.
Displays the supplied line current in milliamps.
Displays the payphone charging signal type; metering (12/16 Hz signal)
or reversebattery (polarity reversal signal).
This section displays region-specific information about the phone's ring.
This displays the frequency of the phone ring in decihertz.
This displays the amplitude of the phone ring in Volts root-mean-squared.
This displays the duration of the first ring (in seconds).
MSC1000G/1024G/1224G Series User's Guide
Section 18.5 on