I have an SPA-3102 gateway which has routed calls between my PSTN and VoIP carrier effectively for the better part of the past 4 years. Recently, it went off hook on my VoIP line, and it won't hang up (go back on hook). The attached phone is fine -- I checked it in isolation; I checked the VoIP line in isolation, it too is fine; and the PSTN line is fine - also checked in isolation.
When I swap 3102's (I have a few of them) everything is perfect. I just can't get this particular 3102 to go on hook. Furthermore, with this 3102, there is no dial tone, and IVR isn't working.
A contributing factor may be the recent firmware update I performed on my 3102. (That is the only significant event of recent.) Notwithstanding, the gateway continued to work fine after that for a week or so...
I have re-updated the firmware -- with the thought there may be something in there... Same results. I have cycled the power on the unit multiple times; I have taken it off line with no power for a good spell and then tried again... Same results.
Is there a way to reset these without IVR/touch tones?
Can anyone direct me to an earlier firmware? (At this time I am at firmware 5.1.10; my hardware version is 1.4.5(a).)