Appendix c - dial pulse and tone-dial frequencies, Appendix c – Multitech MT1432BA User Manual

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MultiModemBA User Guide

Appendix C - Dial Pulse and Tone-Dial Frequencies

Dial Pulses

Closed

Open

B

A

Digit 2

Digit 1

In the example above, the digit 2 is pulse dialed, followed by the digit 1. Each pulse consists of an A
mSec. open and a B mSec. closed, where A will be either 60 or 67 mSec and B will be either 40 or 33
mSec., for a total of 100 mSec. per pulse, or a rate of 10 pulses per second. The interdigital pause
time is 800 mSec. The pulse ratios are controlled by the &P command.

Tone Dial Frequencies

Hz

Digits

697

770

852

941

Hz

1209

1336

1477

1633

1

2

3

A

4

5

6

B

7

8

9

C

0

#

D

*

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