Have a look at the "Nokia Stuff" on gotfuturama.com .
The Siemens Tune they have is noted in musical notes:
from CGEF
P (1/16) E3 (1/4) P (1/8) E3 (1/8) A3 (1/4) Gis3 (1/4) D3 (1/4) P (1/8) D3 (1/8) Fis3 (1/4) E3 (1/4) E3 (1/4) E3 (1/4) P (1/8) A3 (1/8) A3 (1/4) D3 (1/4) D3 (1/4) P (1/8) E3 (1/8) E3 (1/4) E3 (1/4) E3 (1/4) P (1/8) A3 (1/8) A3 (1/4) D3 (1/4) D3 (1/4) P (1/8) G3 (1/8) G3 (1/8) Fis3 (1/8) E3 (1/4) P (1/8) E3 (1/8) A3 (1/4) Gis3 (1/4) D3 (1/4) P (1/8) D3 (1/8) Fis3 (1/4) E3 (1/4) E3 (1/4) P (1/8) E3 (1/8) A3 (1/4) Gis3 (1/4) H3 (1/4) P (1/8) H3 (1/8) G3 (1/8) G3 (1/8) Fis3 (1/8) Fis3 (1/8)