These are products I thought were cool that I have seen, seen on the internet and it looked interesting, tried, recommend, or I think would come in handy in a pinch. This is by no means an exhaustive list.
Pretty much every product has pros and cons.
FHSS (Frequency Hopping Spread Spectrum) Cordless Phones
about spread spectrum security. all the phones I list are wireless network friendly. FHSS seems to be best security-wise.
KX-TG6074PK 5.8 GHz FHSS Digital Cordless Answering System with 4 Handsets, available from panasonic to find a dealer and get a price, call 1-800-405-0652
no additional handsets available. talking caller ID.
KX-TG5480S 5.8 GHz FHSS GigaRange® 2-Line Digital Cordless Phone System with Answering System, available from panasonic $130
no additional handsets available.
KX-TG6073S 5.8 GHz FHSS Expandable Digital Cordless Answering System with 3 Handsets and Talking Caller ID, available from panasonic $130
additional handsets available from panasonic $60.
KX-TG6022B 5.8 GHz Expandable Digital Cordless Phone with 2 Handsets, available from panasonic $70
additional handsets available from panasonic $60.
FHSS phones at newegg $40-420
I do not know what all the technology and security difference is between dect 6.0 and fhss. fhss is from what I read much harder to tap into (frequency-hopping-spread-spectrum).
DECT 6.0 Cordless Phones
about spread spectrum security. all the phones I list are wireless network friendly. DECT 6.0 is not spread-spectrum, but it is encrypted (though weak encryption). see wikipedia article.
DECT 6.0 phones at newegg $40-130
I do not know what all the technology and security difference is between dect 6.0 and fhss except that fhss is from what I am told better security-wise (frequency-hopping-spread-spectrum).