Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Base is great - cordless phones are worthless, low quality

The cordless handsets work well for about 6 months - then battery issues (I think) turn the cordless handsets into crap - really - ununsable - static, garbled voice transmission, etc. Also, the number "1" button seems to fail within the first year on almost all handsets.Also, the base unit has no mute button on speakerphone. All-in-all, I would never buy this system again - and unfortunately, I'm stuck with it now that I have about $1,000 invested all-in-all - it's hard to toss it. I actually only use the base unit for business calls, because the quality is just so bad on the cordless handsets.