Regulatory Notices

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

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Compaq 6500 Family manual Pulse Dialing, Timing, Repeat Attempts