Need: Short Analysis of Errored Seconds

[Cepillo]

Dear Bro!
I am a new on GSM/DCS RNO/RNP :)
But i worked on BSS and Transmission of BSS.
I need a Short Analysis of Errored Seconds and their relation and effect on drops in radio interface.
Could you please direct me in the right direction?
I will be glad to any docs.
Thanks!

[Cepillo]

Any suggestions?
How the errored seconds influence to drops in radio interface?
How can i describe this in several sentences?

Many many thanks!