You are wrong, Sanyo has two models of cordless phones using 2.4
Ghz bandwidth and GE has six models using 2.4 Ghz bandwidth.
Actually DECT phones don't use 2.4 Ghz bandwidth, they uses GSM 900
Mhz bandwidth class 2. Our GSM networks are 900 Mhz, 1800 Mhz and
1900 Mhz class 3 bandwidth, so no bandwidth interference.