- Wed 16th Dec 2020, 12:09
#6039
I am trying to use a Cisco SPA232D with the Irish phone system.
I have been trying for some time to get it to work properly with different impedance and gain settings.
My PSTN line is via a Vodafone modem/router...for which nobody seems to know the line characteristics.
My system works well except that occasionally it mis-dials numbers by adding a digit or two at the start of the number.
ie. dial 0216666666 and it dials 33021666, which is recognised by my dial plan as a local number.
The 232D interface shows that the number has been sent by the ATA correctly, so problem must be in the gain/impedance match with the PSTN line. I have tried the suggested UK settings on this site.
I am currently using FXS i/p gain -12, FXS o/p gain of -8 (when i use higher values here, the ATA seems to detect incorrect number from the FXS phone)
I am using SPA to PSTN gain of 3, and PSTN to SPA gain of 6.
I have tried a huge variety of parameters, but find that about once a day (oddly normally first call of the day) the dialled number is sent incorrectly.
I would be very grateful if anyone could help me out with a suggestion.
Thank you.
I have been trying for some time to get it to work properly with different impedance and gain settings.
My PSTN line is via a Vodafone modem/router...for which nobody seems to know the line characteristics.
My system works well except that occasionally it mis-dials numbers by adding a digit or two at the start of the number.
ie. dial 0216666666 and it dials 33021666, which is recognised by my dial plan as a local number.
The 232D interface shows that the number has been sent by the ATA correctly, so problem must be in the gain/impedance match with the PSTN line. I have tried the suggested UK settings on this site.
I am currently using FXS i/p gain -12, FXS o/p gain of -8 (when i use higher values here, the ATA seems to detect incorrect number from the FXS phone)
I am using SPA to PSTN gain of 3, and PSTN to SPA gain of 6.
I have tried a huge variety of parameters, but find that about once a day (oddly normally first call of the day) the dialled number is sent incorrectly.
I would be very grateful if anyone could help me out with a suggestion.
Thank you.
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