frequecies dect phones

I know about the following frequencies for DECT cordless phones:
1881.792 MHz
1883.520 MHz
1885.248 MHz
1886.976 MHz
1888.704 MHz
1890.432 MHz
1892.160 MHz
1893.888 MHz
1895.616 MHz
1897.344 MHz

but I fgured there might be more. Are there?
The reason I ask is because I have a philips dect phone and when I use it
and run my
scanner on the above frequencies I get nothing. Before you jump on me I
know that you
can't listen to dect phones on a scanner and I know about the encryption,
but I just
wanted to find out what frequency my phone used (if not one of the above).
I did try
contacting philips but they don't respond andthe above numbers are all I
could find on
google.
Thanks for any help.