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VoIP phone base station taps uCLinux

Jan 30, 2008 — by Eric Brown — from the LinuxDevices Archive — 48 views

A Portuguese wireless equipment manufacturer has developed a uCLinux-based DECT phone basestation reference design. Bithium – Sistemas de Telecomunicacoes's Freedom design supports dual PSTN/VoIP cordless phones.

(Click for larger view of the Bithium Freedom design)

Bithium's reference design features the debut of two new telecom chipsets. Freedom includes the IA3223/IA3222 DAA (data access arrangement) line-monitoring chipset from Silicon Valley fabless semiconductor firm Integration Associates (IA). The reference design also uses Netherlands-based Sitel Semiconductor's SC14450 baseband processor, which supports codecs such as G.722, G.711, G.726 and G.729.

IA3223/IA3222 block diagram
(Click to enlarge)

Freedom supports both the DECT (digital enhanced cordless telecommunications) cordless-phone standard, and the CAT-iq (cordless advanced technology internet and quality) digital broadband VoIP standard, which is based on DECT. The PSTN- and SIP-compatible VoIP phone station uses the IA chipset to cost-effectively house and separate the two voice technologies, says Bithium. uCLinux was chosen for its “high flexibility,” says the company, and “its full potential for making Linux applications easily usable.”

Stated Bithium GM Antonio Muchaxo, “Integration's chipset provided the ideal solution to address the requirements of this design both in cost (DAA BOM) and support which helped us to meet our schedule.”


The Freedom reference design is expected to ship to VoIP terminal manufacturers in the first quarter of this year, at an undisclosed price. More information on Freedom and Bithium may be found here.

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