Ringback Tone Detection Parameters for Auto Select Reception Mode
In Auto Select mode, the machine waits for CED if it receives a ringing signal. If it does not re-
ceive CED, it rings the buzzer and sends a ringback tone back through the network to the
transmitter. The frequency and cadence of this generated ringback tone are determined by
the following RAM addresses.
These RAMs are not changed by the country code. If the required values differ from the de-
fault values, they must be adjusted at installation if necessary. A table of default values and val-
ues for various countries follows the RAM address table.
Address
Function
Unit
Remarks
41CF
Ringback tone frequency (high
byte)
65536F/9600
(Hex)
F is the required frequency
in Hz. Convert the
obtained value to hex
code.
41D0
Ringback tone frequency (low byte)
41D1
On time: range 1
20 ms
41D2
Off time: range 1
41D3
On time: range 2
41D4
Off time: range 2
Country
Frequency (Hz)
Cadence
Europe ver-
sion defaults
430 (0B77 is stored in RAM)
0.4 s on/0.2 s off (RAM: On times, 14[H], Off
times, 0A[H])
Asia version
defaults
400 (0AAB is stored in RAM)
1 s on/2 s off (RAM: On times, 32[H], Off
times, 64[H])
Austria
The Europe default value is
acceptable.
1 s on/5 s off (RAM: On 32[H], Off FA[H])
Belgium
1 s on/3 s off (RAM: On 32[H], Off 96[H])
Denmark
1 s on/4 s off (RAM: On 32[H], Off C8[H])
Finland
1 s on/4 s off (RAM: On 32[H], Off C8[H])
France
1.5 s on/3.5 s off (RAM:On 4B[H],Off AF[H])
Germany
1 s on/4 s off (RAM: On 32[H], Off C8[H])
UK, Ireland
The Europe default value is acceptable.
Italy
1 s on/4 s off (RAM: On 32[H], Off C8[H])
Holland
1 s on/4 s off (RAM: On 32[H], Off C8[H])
Norway
1 s on/4 s off (RAM: On 32[H], Off C8[H])
Portugal
1 s on/5 s off (RAM: On 32[H], Off FA[H])
Spain
1.5 s on/3 s off (RAM:On 4B[H],Off 96[H])
Sweden
1 s on/5 s off (RAM: On 32[H], Off FA[H])
Switzerland
1 s on/4 s off (RAM: On 32[H], Off C8[H])
USA
The Asia default value is
acceptable.
The Asia default value is acceptable.
Japan
November 30th, 1991
SERVICE TABLES AND PROCEDURES
NCU PARAMETERS
4-26
Summary of Contents for FAX500
Page 1: ...FAX550 SERVICE MANUAL...
