Multi-Tech Systems MVP210/410/810 사용자 설명서

Chapter 4: Configuring your VOIP 

Multi-Tech 

Systems, 

Inc. 

     

 

 

63 

 

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 an 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. 
Note 2:  “Survivability” tone indicates a special type of call-routing redundancy  & 
applies to MultiVantage VOIP units only 

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. 

 

Type column 

dial tone, 
ring tone, 
busy tone, 
unobtainable tone 
(fast busy), 
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 outputs as audio to the FXS, FXS, or E&M 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 outputs as audio to the FXS, FXO, or E&M 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) 

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Click on the “Custom” button to bring up the Custom Tone Pair 
Settings screen. (The “Custom” button is active only when “Custom” is 
selected in the Country/Region field.)  This screen allows the user to 
specify tone pair attributes that are not found in any of the standard 
national/regional telephony toning schemes.