TELECOM Digest OnLine - Sorted: Re: Replacement for Siemens Gigaset

Re: Replacement for Siemens Gigaset

DevilsPGD (
Mon, 14 Nov 2005 12:11:07 -0700

In message <> (Robert Bonomi) wrote:

> In article <>,
> CharlesH <hoch@exemplary.invalid> wrote:

>> Thor Lancelot Simon wrote:

>>> I would stay away from the 900Mhz phones for a few reasons. First,
>>> the only multi-line phones available in 900Mhz are notoriously
>>> unreliable. Second, eavesdropping on many 900Mhz phones, even modern
>>> ones, is trivial.

>> How does one eavesdrop on a Digital Spread Spectrum (DSS) 900MHz
>> cordless phone? I would have thought that with the spreading code
>> being changed every time the phone is put into the base, they would be
>> essentially uncrackable, like CDMA cell phones.

> The phone and the base station have to negotiate the spreading code
> used for each session. If you can eavesdrop on that negotiation, you
> _can_ predict the frequency hops, rendering it 'trivial' to track as a
> third-party listener.

Sure, except that the negotiation is typically performed by the base
and handset via a wired connection OR at extremely low power (since it
only happens when they're physically connected)

Post Followup Article Use your browser's quoting feature to quote article into reply
Go to Next message: "Re: "Soft Dial Tone" on Uuused lines"
Go to Previous message: beavis: "Re: Sony BMG "Service Pack 2a""
May be in reply to: "Replacement for Siemens Gigaset"
Next in thread: Robert Bonomi: "Re: Replacement for Siemens Gigaset"
TELECOM Digest: Home Page