1. This Revision Petition has been filed by the petitioners challenging the judgment dated 13.4.2016 passed by the learned VII Additional Sessions Judge, Chennai confirming the judgment dated 22.09.2010 passed by the learned Additional Chief Metropolitan Magistrate, Egmore, Chennai for the offence punishable under Section 20 read with 4 of Indian Telegraph Act with Simple Imprisonment of six months and fine of Rs. 1,000/- each and in default of payment of fine, to undergo Simple Imprisonment for a period of two weeks. It has been further ordered that sentences awarded shall run concurrently.

2. The brief facts of the case of the prosecution is as follows:

(i) Joint surprise check was conducted by the officer of CBI along with the officials of Chennai Telephone on 02.8.2001, at the premise of M/s. Wipronet Ltd. Alwarpet. PW-1 and PW-3 also participated in the said surprise check and Ex.P1 was prepared and found out that illegal switching of international incoming calls were going on at Wipronet premises. Rough sketch about M/s. R.M.B. Software Net work was identified and marked as Ex.P3. The data print out taken were identified and marked as Ex.P4. PW-4, taken out print out of