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Regulatory Notices
C-14
Pulse Dialing
The &Pn command is provided for software compatibility only. The pulse ratio is fixed at
67:33 and cannot be changed. The setting of this parameter is ignored by the internal control
software.
Timing
The S-Register ranges for S6, S7, S8, and S11 are restricted and cannot be altered outside
the UK permissible limits.
Repeat Attempts
The modem cannot initiate repeat call attempts. Ensure that host control software cannot
initiate repeat attempts which do not comply with BS6789:Section 3.1 Clause 7 call patterns
A,B,C or D. Table 3 call patterns is reproduced here to assist you in ensuring that your
software is correctly set.
Table 3 BS6789:Section 3.1 Repeat attempts, number of attempts, and duration between
attempts