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clayton: Very interesting, thanks for the information, I thought there were only 3 ringing cadences not 4? maybe that cadence is what we also need to test.
I agree most of the Brother fax machines are fussy with the ring pattern.
BarTender: Just found a section from the Chorus NGA Voice TR-069 Technical User Guide:
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Ringing Cadences
The current NZ PSTN uses four Ringing (or Distinctive Alert (DA)) patterns/cadences for indicating the specific function required by the caller (for example telephone or facsimile).
Analogue lines may have distinctive ringing cadences applied, usually activated by dialling different telephone directory numbers.
NGA voice uses format of an "Initial Ringing" pulse, followed by analogue CLIP data sending, followed by one of the four existing PSTN Ringing cadences. This is different from the NZ PSTN which has traditionally not used a separate "Initial Ringing" pulse, and where applicable analogue CLIP data has been sent during the first long silent period between the first and second ringing cadences.
The NGA Voice Ringing cadences are as shown in the following table. Cadence ringing timings have tolerances of no more than ±10%.
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I suspect your Fax Machine is getting bent out of shape about the Inital Ringing.
If there is a specific modem compatibility needed the analog service required V34 is it different for fibre?
clayton: Just a update using Brother MFC with faxability on Fibre landline.
A firmware update from Brother has fixed the problem, updates for all machines should be rolled out in the next 4 weeks or so.
Thank you all for your input to resolve this issue.
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