GSM and inter ference

[Bob Campbell]

Since getting my n75  I get the most annoying and intrusive   intermittent 
bursts of static rf  on my home telephone. 
the closer the N75 is to the corded phone, the louder the static noise. 
I have to turn off the gsm phone  to make it stop. 
My brother has Verizen and reports the same phenomenon. 
I don't know the kind of phone he has. 
Anyone heard of this problem?  
And what can be done to eliminate it? 
Thanks, 
Bob C. Berkeley CA.