The Cyber Crime Cell and Special Operation Team of Cybderabad Police Commissionerate arrested six persons who were allegedly involved in illegal routing of VoIP calls by using local and non-local numbers.
"In the recent arrest of Naib Subedar P K Poddar from here and Asif Ali from Meerut in an espionage case, their handlers from Pakistan used these types of illegal VoIP exchanges to avoid detection," a release from Cyberabad Police said.
Asif Ali, who was arrested by the Special Task Force of Uttar Pradesh Police on August 16 from Meerut in connection with passing information about Army and allegedly depositing Rs 3 lakh sent by his handlers in Pakistan intelligence to Poddar and two other army personnel, was taken into custody by Central Crime Station--a wing of Hyderabad Police.
Both of them are presently in judicial custody.
"The accused in this case were getting grey VoIP traffic (non CLI-caller line identification) from international carriers and terminating the calls through domestic networks using illegal exchanges installed in their premises using GSM/CDMA gateways," police said.
Absconders, terror elements, Pak intelligence operatives use these types of grey exchanges as their calls cannot be traced back. These VoIP exchanges use fake post-paid SIM cards in huge numbers and operate from an unknown location to avoid detection, they said.