User’s Manualxvi
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In addition to satisfactory line conditions a modem can only work properly if:
a/ it is compatible with the modem at the other end of the call; and
b/ the application using the modem is compatible with the application at the
other end of the call such as accessing the Internet requires suitable
software in addition to a modem.
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This equipment shall not be used in any manner which could constitute a
nuisance to other Telecom customers.
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Some parameters required for compliance with Telecom’s PTC Specifications
are dependent on the equipment (PC) associated with this modem. The
associated equipment shall be set to operate within the following limits for
compliance with Telecom Specifications:
a/ There shall be no more than 10 call attempts to the same number
within any 30 minute period for any single manual call initiation;
b/ The equipment shall go on-hook for a period of not less than 30 seconds
between the end of one attempt and the beginning of the next; and
c/ Automatic calls to different numbers shall be not less than 5 seconds
apart.
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Immediately disconnect this equipment should it become physically damaged,
and arrange for its disposal or repair.
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The correct settings for use with this modem in New Zealand are as follows:
ATB0 (CCITT operation)
AT&G2 (1800 Hz guard tone)
AT&P1 (Decadic dialling make-break ratio = 33%/67%)
ATS0=0 (not auto answer)
ATS10=less than 150 (loss of carrier to hang up delay, factory default of 15
recommended)
ATS11=90 (DTMF dialling on/off duration=90 ms)
ATX2 (Dial tone detect, but not (U.S.A.) call progress detect)
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When used in the Auto Answer mode, the S0 register must be set with a value
of 3 or 4. This ensures:
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a person calling your modem will hear a short burst of ringing before the
modem answers. This confirms that the call has been successfully
switched through the network.
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caller identification information (which occurs between the first and
second ring cadences) is not destroyed.
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The preferred method of dialing is to use DTMF tones (ATDT...) as this is
faster and more reliable than pulse (decadic) dialing. If for some reason you
must use decadic dialing, your communications program must be set up to
record numbers using the following translation table as this modem does not
implement the New Zealand “Reverse Dialing” standard.
Number to be dialed: 0 1 2 3 4 5 6 7 8 9