I have a problem with a SPA400 constantly rebooting. The problem occured when I did some changes in the "Voice"-tab. I changed the "Caller ID/CP Tone Method" from american to european, and the SPA400 started rebooting constantly.
The only way I could avoid this was to reset the device and change the "Caller ID/CP Tone Method" before I did anything else. But now I'm afraid to do any changes in the future, in case it breaks down again.
I had similar problems after upgrading the firmware to 184.108.40.206, made some changes via the web interface and hey presto same problem as you. It got so bad that even a factory default reset would be ineffective and could not gian access to the interface at all. Had to return the unit for replacement.
Now the replacement is displaying odd behavoir after upgrade to 220.127.116.11 in that no changes via web interface are retained after restart. I too want to change the "Caller ID/CP Tone method" from "UK BT" to "UK CCA" as all my outbound calls on the FXO's are mis-dialing. Looks like another RMA case!
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