Common issue. Some of the older units need to be flashed. VOIP does not like quick bursty crap.
Also put a butt set on and listen to the call out. You may need to slow down the dialout string. Place a comma before the dial-out. With FTTH systems it takes a little longer to draw dial tone and these untis like to go off hook and just spill digits.
We see the same issue with gas stations and credi card readers.
Re: Weight monitoring over telephony
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