AT&T System 85 manual 1MMM 2HHH 3LLL 4LHH 5HHL 6HLL 7HLH 8LHL

GENERAL INFORMATION

External Ringing Tones

The following external ringing tone patterns are generated by the system:

RINGING TONE PATTERN (In ms)

11200 on, 4000 off; repeated

2400 on, 200 off, 600 on, 4000 off; repeated

3200 on, 100 off, 200 on, 100 off, 600 on, 4000 off; repeated.

For most currently available voice terminals, the user can select a Personalized Ringing pattern (out of eight possible ringing patterns). The tone patterns are the same as those previously described. The three tones are 530 Hz [low (L)], 750 Hz [medium (M)], and 1060 Hz [high (H)]. The tone sequences are as follows: (Each of these sequences is prefaced by a medium level tone.)

RING PATTERN TONE SEQUENCE

1MMM

2HHH

3LLL

4LHH

5HHL

6HLL

7HLH

8LHL

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