Pakistan Telecommunication Authority (PTA) has decided to further improve its protection policy for mobile/telephony users with the amendment of its regulations for telecom operators and their services that may cause inconvenience to subscribers.
Authority has said that The subscription of the repeated fraudulent call/SMS originator should be terminated along with the IMEI number of the originating handset within in 24 hours of the receipt of the complaint.
Pro Pakistani reported that 
If the originator is repeatedly involved in obnoxious communication even after issuance of warning, the operator shall suspend the telephone subscription of the originator within 24 hours of the receipt of the complaint and operators are asked to record any such subscriptions in the black list along with complete user antecedent.
Telecom operators shall maintain the “Grey and black list” of subscribers involved in obnoxious communication along with complete user antecedents.
The grey list shall comprise of telephone subscriptions along with complete user antecedents who have been issued a warning on account of making obnoxious communication.
The Black list shall comprise of telephone subscriptions along with complete user antecedents who are repeatedly found to be involved in obnoxious activity after issuance of warning and whose telephone subscription has been suspended on account of indulging in obnoxious activity.
Subscriptions placed in the Blacklist of obnoxious communication shall only be restored/ recycled after approval of the PTA and subject to a written undertaking by the originator not to indulge in obnoxious communication again.
Provided that in the case of more than one instance of indulging in obnoxious activity after the termination of subscription, the said user antecedents shall be placed in the list of blacklisted user antecedents and shall not be eligible for any other telecom service from any operator.
User antecedents placed in the black list as well as black listed user antecedents shall be posted on the website of the Operator.
The subscriptions involved in generation of spamming from a telecom network shall be suspended by the concerned operator however it shall be restored only after approval of the authority subject to a written undertaking by the originator not to indulge in spamming again.
All operators shall maintain a black list of subscribers involved in generation of spamming and whose subscriptions have been suspended on account of involvement in spamming activity. User antecedents placed in the black list shall be posted on the website of the operator.
Operators shall ensure the implementation of the standard operating procedures with an effective technical measures are for controlling fraudulent and obnoxious calls, spamming SMSes on their respective networks.
All operators shall provide complete information regarding the particulars telemarketers, content service providers.
Do not Call Register contains complaints on spamming, fraudulent, unsolicited and obnoxious communication shall be provided to authority on demand, PTA amended draft stated.