Yes, definitely you being a commerce student can apply for SITM and their is no preference given to any branch as such. 

SITM Pune offers MBA in Telecom Management with three specializations. You can also opt for MBA Executive programme. 

For full time MBA course you must have passed Bachelor’s degree with minimum 50% marks or equivalent from recognized institute/university. 

Weigtage of marks in SITM exam is:

SNAP Test: 50%

Group Exercise: 10%

Personal Interaction: 30%

Writing Ability Test: 10%

And for MBA Executive an additional three year working experience is required for admission.