Country-Specific Settings

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