Linksys Debuts Cordless Skype Handset

An anonymous reader writes "A new cordless Skype-based VoIP handset will hit Internet and retail stores next week. According to Linksys, the CIT200 handset will allow users to make VoIP phone calls as easily as today's cordless handsets make conventional land line calls. The device uses DECT wireless protocol, claimed to eliminate interference with 2.4GHz phones or devices. It comes with a DECT dongle that plugs into a PC's USB port. It's expected sell for around $130. Initially, Linksys is requiring that the PC run Windows XP or 2000, so no Linux yet."

Comments

Welcome to another let down by the FCC.

[TechyImmigrant]

DECT is and area where the FCC has let you down.

In Europe, the EEC set aside spectrum (1900Mhz) for the purpose of running DECT. The protocol is neat, it does TDD, pi/4 DQPSK and phones have enough smarts to share the spectrum amongst themselves without interfering.

In the USA, your cordless phones are thrown to the dogs in the unlicensed bands. No predetermined spectrum for the application, so phones have to fight it out at 2.4 and 5Ghz with 802.11, microwave ovens and anything else that uses the band. Better still, since there is no uniform standard for interoperability, your handset will only work with the base it came with and not with another manufacturer's.

DECT in 2.4Ghz (achieved with frequency hopping, so it's not true DECT) does interfere with 802.11. I've done the tests. I've designed both DECT silicon and 802.11 silicon and I can assure you they interfere when they share the same unlicensed band.