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Re: [Unlock] Unlock SPA2102-R restricted access domains Unfortunately there's not much you can do. If you are good with soldering you can remove the flash chip and wipe an area which stores the customization data.
There is a forum member which used to unlock these remotely for a small fee but he has been offline for half a year.
Providers (through asterisk): voip.ms, freephoneline, smartcall.ro, ipcomms, callcentric. Hardware: Vonage VDV21, Moto VT2x42, Linksys SPA series, Grandstream HT series, Panasonic KX-TGP5x0