Zyxel IES-5106 [620/1156] Chapter 17 voip

Zyxel IES-5106 [620/1156] Chapter 17 voip
Chapter 17 VoIP
Management Switch Card User’s Guide
620
The following table describes the labels in this screen.
Table 335 The VoIP > Countrycode Screen
LABEL DESCRIPTION
Country Select the country in which the system will be used.
Apply Click this to save your changes and display the region-specific VoIP settings
below.
Cancel Click this to return this screen to its last-saved values.
Detail Click this to display information about the system’s current pulse, meter and tone
parameters not displayed in this screen (see Section 17.6 on page 621).
Country This field displays the country you select from the Country drop-down list box.
Impedance Displays the line impedance or impedance range in ohms.
Coding Type 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.
Loop Current Displays the supplied line current in milliamps.
Tax Type Displays the payphone charging signal type; metering (12/16 Hz signal) or
reversebattery (polarity reversal signal).
Ring Parameters This section displays region-specific information about the phone’s ring.
Frequency (0.1Hz) This displays the frequency of the phone ring in decihertz.
Amplitude (0.1Vrms) This displays the amplitude of the phone ring in Volts root-mean-squared.
On Time 1 (s) This displays the duration of the first ring (in seconds).
Off Time 1 (s) This displays the length of time between the first and second ring (in seconds).
On Time 2 (s) This displays the duration of the second ring (in seconds).
Off Time 2 (s) This displays the wait time after the second ring before the first ring is sent again
(in seconds).
Caller ID Parameters This section displays region-specific information about caller ID
CID type This displays whether the caller ID information is sent before the ring (prior ring
displays) or at the same time as the ring (during ring displays).
Payload Type This displays the caller ID payload type.
SDMF displays if caller ID uses the Single Data Message Format (which transmits
caller number, date and time).
MDMF displays if caller ID uses the Multiple Data Message Format (which
transmits caller name, number, date and time).
First TAS Type TAS (Terminal equipment Alerting Signal) is a tone sent prior to the transmission
of caller ID information. This is the primary TAS signal type, which is used in a
line reversal scenario.
The possible values are:
NULL: No TAS signal is sent.
DT_AS: Dual Tone Alerting Signal.
RP_AS: Ringing Pulse Alerting Signal.
Line_Reversal: Simple line polarity inversion.
First TAS Interval
(ms)
This is the first TAS timeout period in milliseconds.

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