Geek Gazette has a review of the Sipura SPA-3000, a very unique VOIP adapter that can act as an analog telephone adapter for connecting a regular telephone to a VOIP provider or VOIP PBX, as well as act as a gateway between the regular telephone network (PSTN) and a VOIP provider. The later functionality allows you to dial into the gateway from the regular phone network and connect out through the VOIP network. For users of the open source Asterix PB..
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