I recently thought I had resolved the “wipeout” of BT caller ID by increasing the gain on my FXO port, but tonight, a second polarity reversal hit again, this time on a “RINGBACK”.
Is there any way, under 1.6.2.9, to make the caller ID more reliable? If it gets wiped out, Asterisk treats it as “withheld”, which I do not normally allow to ring the phones.
Of course, if distinctive ring detection worked at the same time, I could use that to detect “RINGBACK” rather than relying on the caller ID name field.