I have a SPA400 in place for years but was only using it for voicemail which worked great.
Lately I needed to reconfigure it to work with a single analogue line plugged into Line 1. But the SPA400 showed the line as On-Hook with 0V (somethimes it shows off hook with 0V). I have tried all the other analogue ports with the same result.
After a full factory reset and a setup (both manual & wizard) the SPA400 still showed the same problem. I found that if I just kept restarting the device it would eventually detect the analogue line @55V. If it stayed running after this it would be OK but it also loses the analogue line after a random period of time.
Locale is Ireland.
Firmware is 188.8.131.52
SPA400 Config Attached
Has anyone seen this snag before and can it be fixed?
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