Looking at a BizHub C220 that previously had no issues with faxing. Customer moved machine to a different wall in same office, using same phone line outlet and now faxing is hit or miss. Swapped phone lines, tried with and w/o surge protector, re-seated fax board, and confirmed that number dialed was a good number. The machine will fax to some numbers and not to others, and when I arrived on scene I was able to send to a number that previously rejected the fax. The T codes I get vary also. Where do I find the explanation for these T codes?
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