Вот что обещают китайцы:
The PA1688 is currently in volume production and shipping in VoIP products in China, Taiwan, and Europe today. What differentiates the PA1688 VoIP processor is its high-level of software and firmware integration coupled with very cost-effective pricing. This is a proven VoIP terminal platform with reference designs available for evaluation today.
PA1688 VoIP processor contains an enhanced instruction controller in parallel with a DSP and interfaces to an SDRAM and an AC97codec. The PA1688 stores its firmware and protocol stacks on a programmable FLASH memory.
The veracity software stacks for the PA1688 chip provides all features required for a turn-key VoIP product with voice messaging. Software and Firmware supports major ITU-G.7XX audio codec. H.323v4 call control protocols, MGCP RFC2705, SIP RFC2543, Net2phone private system and standard network protocols are supported.
PA1688 chip enables manufactures to introduce a high-quality VoIP terminal, while minimizing the time to market.
Features:
DHCP support for LAN or Cable modem
PPPoE support for ADSL or Cable modem
Setted by HTTP web browser; advanced setted by Telnet
Upgraded by FTP/TFTP
Support H.323v4 call control protocols, MGCP RFC2705, SIP RFC2543 and Net2phone private system
Цен на камни не знаю, не производим мы железо пока... Но сюдя по тому, что цена конечного продукта в упаковке с БП и в корпусе меньше 50$, то камни не слишком дороги

)
Поищу производителя - вышлю его координаты.
Ещё вопрос: у Вас ICQ есть? Если есть, то не могли бы Вы постучаться ко мне.