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TONE-PT (Tone Generator)
Issue 1 June 2005 2355
g. Error Types 257 and 513: infrequent errors, at a rate which does not bring up an alarm,
probably do not affect service, unless there are customer complaints of no tones, or
incorrect tones which can not be explained in any other way. However, if an alarm is raised
because this error is being repeatedly logged, then the circuit pack should be replaced. See
Replacing the IPSI or Tone-Clock Circuit Pack
on page 2337.
h. Error Type 1281: tone-generation administration requires a TN780 or TN2182
Tone-Clock, or a TN2312 IPSI circuit pack, but the existing Tone-Clock circuit does not
provide the needed functionality. The Base Tone Generation Set on page 1 or the custom
tones beginning on page 2 of the tone-generation screen may have values not
supported by the existing Tone-Clock.
Error Type 1281 indicates that the tone-generation screen has custom tones translated
and that the alarmed tone board does not support the customized tones. TN768 tone
boards do not support any customized tones. TN780 tone boards support up to 6 of the
following customized frequencies/levels only:
Silence 404Hz at 11.0 dB
350Hz at 17.25 dB 404Hz at 16.0 dB
425Hz at 4.0 dB 480Hz + 620Hz at 24.0 dB
425Hz at 11.0 dB 404Hz + 425Hz at 11.0 dB
425Hz at 17.25 dB 375Hz + 425Hz at 15.0 dB
440Hz at 17.25 dB 404Hz + 450Hz at 11.0 dB
350Hz + 425Hz at 4.0 dB 1000Hz at 0.0 dB
350Hz + 440Hz at 13.75 dB 1000Hz at +3.0 dB
480Hz at 17.25 dB 525Hz at 11.0 dB
620Hz at 17.25 dB 1400Hz at 11.0 dB
440Hz + 480Hz at 19.0 dB