service tax on common intercom system by group company

MANISH PANCHAL (service) (174 Points)

14 December 2007  

Dear sir

we have various group companies sitting in common area and using common intercom system but holding company paying bills for telephone line taken in its name on monthly bills issued by telephon company(BSNL) .Now this company issues debit note to its group companies which uses intercom facility. my question is whether service tax apllicable???

if applicable,then under which category either Business support service or Telephone service or any other ????