There is a third bank of DIP switches located inside the Hx chassis used to set country-specific voltage and line impedance settings and to set the Call Progress Tone to be detected if Call Progress Tone Disconnect is used.
The Factory Default setting is all 8 bits set to the OFF position (labeled OPEN on the switch). This default configuration is set for operation within the United States and Canada (North American telephone line characteristics, and the ‘precise’ dial-tone signal for Call Progress Tone Disconnect).
You must remove the top cover of the chassis to gain access to the third bank of DIP switches located on the Hx motherboard.
Important! The chassis cover should only be removed by a qualified technician. AC power must be disconnected prior to removing the cover.
Figure 1 - Internal DIP switches
The internal DIP switch bank is divided up into two subsets of 4 switches each:
Bits 1 through 4 configure the Hx’s telephone interface circuitry to match the telephone line impedance and voltage characteristics of the country where the hybrid is used.
Bits 5 through 8 configure Call Progress Tone Detection to match the call progress tones used by various countries or central office switches.
Call progress tones (Dial tone, busy tone, etc) can be used to make the Hx disconnect when loop current signaling is not available or is unreliable.
Call Progress Tone Disconnect is active only on Auto-Answered incoming calls to prevent undesired disconnections; it may be disabled if the feature causes problems in your application; see internal DIP switch settings table below.
Table 1 below provides details of network characteristics. Table 2 deals with Call Progress Tone Detection. Table 3 lists the recommended DIP settings for each country.
Note that the term "re-order tone" refers to the "fast busy" signal often used to indicate network congestion or an error condition.
TABLE 1 - Network Characteristics (Bits 1 - 4)
Bit 1 | Bit 2 | Bit 3 | Bit 4 | Telephone Network |
|---|---|---|---|---|
OFF | OFF | OFF | OFF | USA, Canada |
OFF | OFF | OFF | ON | Japan, low voltage networks |
OFF | OFF | ON | OFF | FCC-compliant countries |
OFF | OFF | ON | ON | CRT21, Europe (real line impedance) |
OFF | ON | OFF | OFF | Custom country configuration |
OFF | ON | OFF | ON | Custom country configuration |
OFF | ON | ON | OFF | Custom country configuration |
OFF | ON | ON | ON | Europe (complex line impedance) |
ON | OFF | OFF | OFF | Custom country configuration |
ON | OFF | OFF | ON | Custom country configuration |
ON | OFF | ON | OFF | Custom country configuration |
ON | OFF | ON | ON | Reserved for future use |
ON | ON | OFF | OFF | Reserved |
ON | ON | OFF | ON | Reserved |
ON | ON | ON | OFF | Reserved |
ON | ON | ON | ON | Reserved |
TABLE 2 - Call Progress Tone Detection Settings (Bits 5 - 8)
Bit 5 | Bit 6 | Bit 7 | Bit 8 | CPTD Characteristics |
|---|---|---|---|---|
OFF | OFF | OFF | OFF | U.S. dial tone |
OFF | OFF | OFF | ON | U.S. re-order signal |
OFF | OFF | ON | OFF | WORLD single-frequency dial tone |
OFF | OFF | ON | ON | WORLD re-order, ON = 155 - 550ms, OFF = 155-550ms |
OFF | ON | OFF | OFF | WORLD re-order, ON = 250 - 1,200ms, OFF = 250 - 1,200 ms |
OFF | ON | OFF | ON | WORLD, multi-tone dial tone |
OFF | ON | ON | OFF | WORLD, multi-tone dial tone |
OFF | ON | ON | ON | WORLD, pulse dial tone, ON = 150 - 350ms, OFF = 450 = 1,100ms |
ON | OFF | OFF | OFF | WORLD, pulse dial tone, ON = 100 = 250ms, OFF = 200 - 400ms |
ON | OFF | OFF | ON | Reserved for future use |
ON | OFF | ON | OFF | Reserved |
ON | OFF | ON | ON | Reserved |
ON | ON | OFF | OFF | Reserved |
ON | ON | OFF | ON | Reserved |
ON | ON | ON | OFF | Reserved |
ON | ON | ON | ON | CPTD feature disabled |
TABLE 3 - Settings for Countries (Bits 1 - 8)
Country | Bit 1 | Bit 2 | Bit 3 | Bit 4 | Bit 5 | Bit 6 | Bit 7 | Bit 8 |
|---|---|---|---|---|---|---|---|---|
Argentina | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Australia | ON | OFF | OFF | ON | OFF | OFF | ON | ON |
Austria | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Bahrain | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Belgium | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Brazil | OFF | OFF | OFF | ON | OFF | OFF | ON | OFF |
Bulgaria | OFF | ON | ON | ON | OFF | ON | ON | ON |
Canada | OFF | OFF | ON | OFF | OFF | OFF | OFF | OFF |
Chile | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
China | OFF | OFF | OFF | ON | OFF | OFF | ON | OFF |
Columbia | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Croatia | OFF | ON | ON | ON | OFF | ON | ON | ON |
CTR21 | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Cyprus | OFF | ON | ON | ON | OFF | ON | OFF | ON |
Czech Republic | OFF | ON | ON | ON | OFF | OFF | ON | OFF |
Denmark | OFF | OFF | ON | ON | OFF | OFF | ON | ON |
Ecuador | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Egypt | OFF | OFF | OFF | ON | OFF | ON | OFF | OFF |
El Salvador | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Finland | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
France | OFF | OFF | ON | ON | OFF | ON | OFF | OFF |
Germany | OFF | OFF | ON | ON | OFF | OFF | ON | ON |
Greece | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Guam | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Hong Kong | OFF | OFF | ON | OFF | OFF | OFF | OFF | OFF |
Hungary | OFF | OFF | ON | OFF | OFF | OFF | ON | ON |
Iceland | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
India | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Indonesia | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Ireland | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Israel | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Italy | OFF | OFF | ON | ON | OFF | OFF | ON | ON |
Japan | OFF | OFF | OFF | ON | OFF | ON | OFF | OFF |
Jordan | OFF | OFF | OFF | ON | OFF | OF | ON | OFF |
Kazakhstan | OFF | OFF | OFF | ON | OFF | OFF | ON | OFF |
Kuwait | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Latvia | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Lebanon | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Luxembourg | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Macao | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Malaysia | OFF | OFF | OFF | ON | OFF | OFF | ON | OFF |
Malta | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Mexico | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Morocco | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Netherlands | OFF | OFF | ON | ON | OFF | OFF | ON | ON |
New Zealand | OFF | ON | ON | OFF | OFF | OFF | ON | OFF |
Nigeria | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
North Korea | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Norway | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Oman | OFF | OFF | OFF | ON | OFF | OFF | ON | OFF |
Pakistan | OFF | OFF | OFF | ON | OFF | OFF | ON | OFF |
Peru | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Philippines | OFF | OFF | OFF | ON | OFF | OFF | ON | OFF |
Poland | ON | OFF | OFF | OFF | OFF | OFF | ON | OFF |
Portugal | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Romania | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Russia | OFF | OFF | OFF | ON | OFF | OFF | ON | OFF |
Saudi Arabia | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Singapore | OFF | OFF | ON | OFF | OFF | OFF | ON | ON |
Slovakia | OFF | OFF | ON | OFF | OFF | ON | ON | ON |
Slovenia | ON | OFF | OFF | OFF | OFF | ON | ON | ON |
South Africa | ON | OFF | ON | OFF | OFF | OFF | ON | OFF |
South Korea | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |
Spain | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Sweden | OFF | OFF | ON | ON | OFF | ON | OFF | OFF |
Switzerland | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
Syria | OFF | OFF | OFF | ON | OFF | OFF | ON | OFF |
Taiwan | OFF | OFF | OFF | ON | ON | OFF | OFF | OFF |
Thailand | OFF | OFF | OFF | ON | OFF | OFF | ON | OFF |
Turkey | OFF | OFF | ON | ON | OFF | OFF | ON | OFF |
UAE | OFF | OFF | ON | OFF | OFF | OFF | OFF | OFF |
United Kingdom | OFF | OFF | ON | ON | OFF | ON | OFF | ON |
USA | OFF | OFF | ON | OFF | OFF | OFF | OFF | OFF |
Yemen | OFF | OFF | ON | OFF | OFF | OFF | ON | OFF |