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Calling from ship to shore requires detection of an earth station dial
tone before dialling the number of the subscriber. The dial tone must
be acknowledged after 400 ms continuous detection, and further
dialling must not continue until 600 ms after detection of the dial tone.
< is the dial modifier to be included to detect the dial tone of the
earth station
0
Request for dial tone
W
Wait for dial tone
789
Earth station number
<
Detects earthstation dial tone
47
Country code
(e.g. Norway)
37
National trunk Code
011710
Subscriber's number
LZTR104006 R1.00
1 2-7
Zat 14.4/14.4-7 and 19.2/19.2-7
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