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Chapter 4: Configuring your MVPGSM
Multi-Tech Systems, Inc. MVPGSM 38
“Regional Parameter” Definitions
Field Name Values Description
Country/Region USA,
Japan,
UK,
Custom
Name of a country or region that uses a certain set of tone pairs for dial tone, ring
tone, busy tone, unobtainable tone (fast busy tone), survivability tone (tone
heard briefly, 2 seconds, after going off hook denoting survivable mode of VOIP
unit), re-order tone (a tone pattern indicating the need for the user to hang up the
phone), and intercept tone (a tone that warns a party that has gone off hook but
has not begun dialing, within a prescribed time, that an automatic emergency or
attendant number will be called; the automatic call can be used to direct an
attendant’s attention to a disabled or distressed caller, allowing an appropriate
response to be made).
In some cases, the tone-pair scheme denoted by a country name may also be used
outside of that country. The “Custom” option (button) assures that any tone-
pairing scheme worldwide can be accommodated.
Note 1:
Intercept tone is applicable only when the FXS telephony interface has
been chosen in the Interface screen and when the AutoCall / OffHook Alert field is
set to OffHook Alert in the Voice/Fax Parameters screen. The time allowed for
dialing before the automatic calling process begins is set in the OffHook Alert
Timer field of the Voice/Fax Parameters screen.
Advisory screen This message screen appears whenever the
Country field is changed. It informs the operator
that, upon change of the Country field value, all
User Defined Tones will be deleted.
Standard Tones fields
Type column dial tone,
ring tone,
busy tone,
unobtainable tone,
survivability tone,
re-order tone
Type of telephony tone-pair for which frequency, gain, and cadence
are being presented.
Frequency 1 freq. in Hertz Lower frequency of pair.
Frequency 2 freq. in Hertz Higher frequency of pair.
Gain 1 gain in dB
+3dB to –31dB
and “mute” setting
Amplification factor of lower frequency of pair.
This applies to the dial, ring, busy and ‘unobtainable’ tones that the
MultiVOIP GSM outputs as audio to the wireless port. Default: -16dB
Gain 2 gain in dB
+3dB to –31dB
and “mute” setting
Amplification factor of higher frequency of pair.
This applies to the dial, ring, busy, and ‘unobtainable’ (fast busy) tones
that the MultiVOIP GSM outputs as audio to the wireless port.
Default: -16dB
Cadence
(ms) On/Off
n/n/n/n
four integer time
values in
milliseconds; zero
value for dial-tone
indicates continuous
tone
On/off pattern of tone durations used to denote phone ringing, phone
busy, connection unobtainable (fast busy), dial tone (“0” indicates
continuous tone), survivability, and re-order. Default values differ for
different countries/regions. Although most cadences have only two
parts (an “on” duration and an “off” duration), some telephony
cadences have four parts. Most cadences, then, are expressed as two
iterations of a two-part sequence. Although this is redundant, it is
necessary to allow for expression of 4-part cadences.
Custom (button) Only available when
Country/Region is
set to “Custom”
Click on the “Custom” button to bring up the Custom Tone Pair
Settings screen. This screen allows the user to specify tone pair
attributes that are not found in any of the standard national/regional
telephony toning schemes.