Client Advisory: Carrier-Level Content Monitoring of Telecommunications Traffic into Mainland China

21 Sep 2026

Understand how PRC telecommunications regulations affect voice and messaging traffic into China.

In this article

1. Purpose and scope

This advisory is issued to Customers of LoopUp who originate voice or messaging traffic terminating in the People's Republic of China ("PRC"). Its purpose is to explain the statutory basis for content-based monitoring conducted by PRC-licensed basic telecommunications carriers ("Carriers"), including China Telecom, China Mobile, and China Unicom, and to set out the practical implications for Customers whose call or message content includes certain financially sensitive terminology.

This advisory is descriptive only and does not constitute legal advice. Customers with traffic profiles materially affected by the matters described below should seek advice from PRC-qualified counsel.

2. Legal and regulatory basis

Carrier-level content monitoring of the kind addressed in this note is undertaken pursuant to the Anti-Telecom and Online Fraud Law of the People's Republic of China (中华人民共和国反电信网络诈骗法), adopted by the Standing Committee of the National People's Congress on 2 September 2022 and effective from 1 December 2022 (the "Law"). The Law imposes affirmative obligations on Carriers to establish risk-monitoring and early-warning systems capable of identifying communications traffic associated with fraud, to conduct identity verification of telecommunications users, and to restrict or suspend service where a user's traffic is assessed as presenting a fraud risk that is not resolved on verification.

The Law operates alongside a coordinated multi-agency enforcement framework involving the Ministry of Industry and Information Technology ("MIIT"), the Ministry of Public Security's National Anti-Fraud Center (国家反诈中心), and the People's Bank of China, each of which has published supporting guidance directed at the identification and interception of fraudulent telecommunications activity. Carriers implement the resulting monitoring obligations through internal, non-public technical measures, including automated screening of call and message content against categories of terminology associated with fraud typologies. The specific lexicon applied by any given Carrier is an operational matter for that Carrier and is not itself prescribed by the Law.

Compliance with these obligations is mandatory for Carriers, not discretionary. A Carrier that fails to maintain adequate monitoring is itself exposed to regulatory sanction, including financial penalty and, in serious cases, restriction of its operating licence. Content-based monitoring of the kind described in this note should accordingly be understood as a function of Carrier compliance with PRC law, rather than as a measure adopted at the initiative of any individual Carrier (or LoopUp), and it applies uniformly to all Carriers and all telecommunications providers routing traffic into the PRC, irrespective of the identity of the underlying enterprise customer.

3. Rationale for content-based screening

The terminology subject to automated review is derived from patterns observed in fraud typologies prevalent in the PRC, in particular impersonation fraud in which perpetrators pose as financial institutions, credit-reporting agencies, loan platforms, debt-collection agents, or law enforcement authorities in order to induce a transfer of funds from the intended victim. Terms such as "loan" (贷款), "credit report" (征信), "overdue" (逾期), "fund audit" (资金清查), and "investment platform" (投资平台) recur with disproportionate frequency in such scripts and are accordingly weighted by Carrier detection systems as indicative of elevated fraud risk.

The same terminology occurs with equal frequency in lawful commercial communications, including recruitment, financial services, and account-servicing contexts. A flag generated by a Carrier's automated system is a statistical indicator warranting review; it is not, and should not be understood as, a determination or allegation that the Customer or any counterparty has engaged in unlawful conduct.

4. Categories of terminology subject to review

Without purporting to be exhaustive, and noting that specific lexicons are determined unilaterally by each Carrier and may be revised without notice, terminology of the following categories has been identified by Carriers as subject to heightened automated review: (i) consumer credit and lending terminology (e.g., loan, credit limit, overdue); (ii) credit-reporting and credit-repair terminology (e.g., credit report, damaged credit, credit assistance); (iii) investment and fund-related terminology (e.g., investment platform, fund audit); and (iv) terminology invoking law enforcement or judicial process (e.g., police report). Customers operating high-volume calling or messaging campaigns that make legitimate use of this terminology — most commonly recruitment and financial-services campaigns — are more likely to encounter Carrier review as a function of volume and frequency rather than of the substance of the communication.

5. Operational consequences of a flagged communication

A communication identified by a Carrier's automated screening system ordinarily results in an internal Carrier alert for further review. It does not, in the ordinary course, result in automatic blocking of the communication or suspension of the originating number. Carrier authority to restrict or suspend service is generally reserved for traffic exhibiting a sustained pattern consistent with fraudulent activity, considered together with other risk indicators such as unverified account status or anomalous calling volume, rather than for isolated or incidental use of the terminology referenced above.

Accordingly, Customers conducting business communications in the ordinary course should not expect the matters described in this advisory to result in a material disruption to service. Where a specific business line generates repeated Carrier review as a consequence of routine and legitimate use of the referenced terminology, this is generally capable of resolution through Carrier-level verification of the relevant number as a registered enterprise line, as described in Section 6 below.

6. LoopUp's approach and available mitigations

Where LoopUp is notified by a Carrier of guidance of the kind addressed in this advisory in respect of a specific Customer, LoopUp will communicate that guidance to the Customer and, where appropriate, will liaise with the relevant Carrier to seek verification and whitelisting of the Customer's business numbers as legitimate enterprise traffic.

Customers operating recruitment, financial-services, or other high-volume campaigns into the PRC that make routine use of the terminology described in Section 4 are encouraged to notify their LoopUp account team of the relevant business line(s) in advance, to enable proactive engagement with the relevant Carrier. Customers may also wish to review call and message scripts used in such campaigns to favour precise, factual phrasing over language replicating the urgency-oriented register characteristic of fraud scripts, where this can be done without compromising the substantive content of the communication. Neither step is a legal requirement for lawful business communications; both are offered as practical measures to reduce the incidence of automated review.

7. General application across the telecommunications sector

The obligations described in this advisory arise from PRC law of general application and are not specific to LoopUp or to any Customer. Any enterprise routing voice or messaging traffic into the PRC through any provider is subject to equivalent Carrier-level monitoring as a matter of PRC regulatory compliance. The matters addressed in this note should accordingly be understood as a standard incident of conducting telecommunications-based business with counterparties in the PRC, rather than as a condition particular to LoopUp's service.

8. Disclaimer

This note is provided for general informational purposes only. It reflects LoopUp's understanding of publicly available regulatory materials as at the date of issue and does not constitute, and should not be relied upon as, legal advice. The Customer is required to ensure compliance with the Law and acknowledges the application of the above. LoopUp makes no representation as to the completeness or continued accuracy of this note, and Carrier practices in this area are subject to change without notice. Customers should consult PRC-qualified legal counsel in respect of the application of the Law, or of any Carrier notice received, to their specific circumstances.

9. Reference materials