Unwanted calls promoting property deals, loans, credit cards, insurance policies and other products have become a regular nuisance for many mobile users. Simply blocking one number often provides only temporary relief because callers may switch SIMs or use another number to continue contacting consumers.
India's telecom regulatory framework is increasingly focusing on a broader approach to tackle such unsolicited commercial communication. Instead of relying only on individual phone numbers, detection mechanisms can also examine suspicious calling behaviour, automated calls, repeated violations and consumer complaints.
The objective is to make it more difficult for persistent spammers to escape enforcement merely by changing their calling number.
Spam Detection to Focus on Calling Behaviour
Traditionally, identifying a suspicious phone number was an important part of controlling spam. However, number-based blocking alone can have limitations when commercial callers repeatedly switch numbers.
Under strengthened anti-spam mechanisms, telecom service providers can use additional indicators to identify potentially suspicious activity.
These may include unusually high calling volumes, repeated calling patterns, robocalls, auto-dialled calls and pre-recorded commercial messages.
Technology-based detection systems, including analytical and AI-driven tools, can help telecom operators identify unusual patterns across multiple numbers. This means enforcement can increasingly focus on the behaviour associated with spam rather than looking at one number in isolation.
Such systems may prove particularly useful when the same entity repeatedly changes numbers to continue making unsolicited calls.
Consumer Complaints Can Trigger Further Scrutiny
Customer complaints remain an important part of the anti-spam framework.
According to the provisions described in the available information, three complaints received within a 10-day period, together with other indicators such as technology-based detection, could lead to further examination of a suspected number.
However, receiving complaints does not automatically mean that a number will be immediately disconnected or penalised. Any subsequent action would depend on the applicable TRAI regulations, supporting evidence and the investigation carried out by the telecom service provider.
Telecom companies may also exchange relevant information on suspected spam numbers to improve detection and enforcement across networks.
This approach is intended to make it harder for repeat offenders to simply move from one number or network to another and resume the same activity.
Repeat Violators Could Face Blacklisting
Stronger consequences can apply to entities that repeatedly violate commercial communication rules.
Telemarketers found repeatedly breaching applicable requirements may face blacklisting for a specified period, which can extend up to one year under the provisions described in the source information.
This is particularly significant for operators that attempt to evade restrictions by abandoning a flagged number and continuing their activities using another connection.
By linking enforcement more closely to repeated behaviour, the framework aims to address the source of persistent spam rather than only individual calls.
Automated Commercial Calls May Attract Termination Charges
The framework also includes provisions relating to certain application-to-person, or A2P, voice calls.
For applicable automated commercial calls, telecom operators may levy a termination charge of up to 5 paise per minute, according to the information provided.
A2P communication generally refers to communication initiated through an application or automated system and delivered to an individual user.
The provision is intended to discourage indiscriminate high-volume automated calling while encouraging businesses and communication providers to follow the prescribed commercial communication framework.
Consumers should note that this should not be interpreted as a 5-paise-per-minute charge imposed on ordinary mobile users receiving such calls. It relates to applicable commercial communication arrangements between service providers and entities operating such systems.
Why Changing Numbers May Become Less Effective for Spammers
One of the most important aspects of the evolving approach is the focus on identifying patterns rather than depending exclusively on a particular mobile number.
If detection systems identify repeated high-volume calls, similar automated activity or other suspicious patterns across different connections, simply switching numbers may not be enough for an operator to avoid scrutiny.
Consumer complaints can provide another signal that helps telecom companies identify potentially problematic calling behaviour.
The effectiveness of these measures, however, depends on implementation, investigation and compliance with the applicable regulatory framework.
What Should You Do When You Receive Spam Calls?
Blocking a number can prevent further calls from that particular connection, but consumers can take additional steps when they repeatedly receive unsolicited or suspicious calls.
Avoid sharing OTPs, banking credentials, UPI PINs, card details, passwords or other sensitive information with unknown callers. Consumers can also use their telecom operator's official spam-reporting facility to report unwanted commercial communication.
If the same type of unsolicited communication continues, filing a complaint through the prescribed official channel can be more useful than repeatedly blocking individual numbers.
Keeping basic details such as the calling number, date and time may also help when reporting repeated violations.
Reporting Spam Can Help Improve Detection
Consumer reports are important because they provide telecom operators with information that can be used alongside technical indicators to identify suspicious communication patterns.
As anti-spam systems become more focused on behavioural analysis, automated calling and repeat violations, callers who frequently switch numbers may find it increasingly difficult to avoid detection.
For mobile users, the key takeaway is simple: don't just ignore persistent spam. Block suspicious numbers when necessary, report unsolicited commercial calls through official channels and never disclose sensitive financial or personal information to an unknown caller.
