GSM Algorithm

Where i can get the complete technical details for implementing GSM algorithms. Complete details of this standard. Or from where i can buy the details of this standard ?

Give me some links or relevant informations.

Check:

www.etsi.org -> Services&Products -> Free Download of Standards (Registration is required.)

and:

www.3gpp.org -> Specifications

You can get information from http://www.gsmworld.com/ site

Also you can download the following and go through it. these are good book to get knowledge about GSM. It is available in this site
under "General Interest E-Books, Specifications & Articles"


Convergence Technologies for 3G Networks
GSM, cdmaOne and 3G Systems
GSM Networks: Protocols, Terminology, and Implementation