Amazon Connect Customer: China Calling Compliance Best Practices

Maintaining compliant calling operations to China (country code +86) presents significant challenges for global businesses as telecommunications regulations continue to evolve. If your organization relies on Amazon Connect Customer for customer communications to Chinese destinations, understanding and implementing compliance best practices helps you avoid service disruptions and protect your customer relationships.

A global travel services company maintained uninterrupted China calling operations through Amazon Connect Customer by implementing approved number configurations and rate limiting controls, protecting their revenue stream and customer relationships when regulatory requirements changed. Their experience shows how the right tools and approach help businesses operate confidently in complex regulatory environments.

In this post, we’ll walk you through five critical best practices for compliant China calling: configuring approved number combinations, eliminating prohibited number types, implementing rate limiting controls, configuring outbound caller ID, and implementing number validation. By following these practices, you can maintain reliable connectivity to Chinese customers while meeting telecommunications requirements.

China’s regulatory environment for calling

Chinese telecommunications carriers enforce specific standards for international calls to China. To operate successfully, you need the following capabilities. For the full list of requirements and eligibility criteria, see Outbound calling restrictions in the Amazon Connect Customer Administrator Guide.

• Direct Inward Dialing (DID) numbers with call-back functionality
• Rate limiting within specified parameters
• Number validation before calling
• Compliant caller identification
• Approved number types excluding Toll-Free Numbers (TFN) and Universal International Freephone Numbers (UIFN) for outbound calling

You can meet each of these requirements using Amazon Connect Customer alongside AWS monitoring and validation services, maintaining reliable China connectivity regardless of call volume.

Understanding compliance requirements

Chinese carriers enforce telecommunications standards consistently to maintain network quality and security. Without compliant configurations, you might experience:

• Service interruptions affecting customer communications: Rate limiting controls (Best Practice 3) help you stay within approved thresholds
• Loss of calling capability to Chinese destinations: Approved number configurations (Best Practice 1) and eliminating prohibited types (Best Practice 2) reduce this risk
• Operational challenges for customer support and sales teams: Number validation (Best Practice 5) prevents failed calls before they happen
• Impact on business continuity and customer relationships: Outbound caller ID configuration (Best Practice 4) builds recipient trust

Each of the best practices in this post directly addresses these risks. For example, rate limiting controls help you stay within carrier-approved thresholds, reducing the risk of service interruptions. Approved number configurations help you avoid spam flags and recipient fees that lead to calling capability loss.

AWS provides the tools needed to help you meet regulatory requirements from day one. The monitoring and validation capabilities across these services support proactive management, helping your calling operations remain stable and reliable. It is your responsibility to verify that your use of these tools complies with applicable telecommunications regulations.

Critical success factors

The following five best practices are the foundation of compliant China calling with Amazon Connect Customer. We recommend starting with the first two (approved numbers and eliminating prohibited types), as the remaining steps build on having a compliant number inventory.

1. Configure approved number combinations

Success Criteria: 100% of outbound calls use approved DID numbers.

To configure approved number combinations, follow these steps:

Request Approval: Submit a request to AWS Support with your exact telephony numbers list.

• Use Direct Inward Dialing (DID) numbers from the service.
• Numbers cannot be from Hong Kong, Macau, or Taiwan. Note: This country list is subject to change. Always check the Amazon Connect Customer documentation for the latest information.
• Consider distributing numbers across different Amazon Connect Customer instances to reduce the impact if carriers suspend calling capability on one instance.

Set Up Call-back Capability

• Verify each DID number can receive inbound calls. Configure an inbound contact flow that plays a message clearly stating your company name.
• Test call-back functionality after configuration changes such as the contact flow, queue, or routing policies.

Provide Use-case Description

• Submit a detailed use-case description.
• Confirm eligibility against supported use-cases in the Amazon Connect Customer Administrator Guide.

2. Eliminate prohibited number types

Success Criteria: Zero usage of TFN/UIFN numbers for China calling.

Chinese carriers prohibit two number types for outbound China calling:

• Toll-Free Numbers (TFN): These can generate spam flags with downstream providers, potentially resulting in negative reputation scores and unexpected recipient fees. For more details, see Outbound calling restrictions – Toll-free numbers in the Amazon Connect Customer Administrator Guide.
• Universal International Freephone Numbers (UIFN): Chinese carriers block UIFN numbers for outbound use to China. For more details, see Outbound calling restrictions – UIFN numbers in the Amazon Connect Customer Administrator Guide.

To address this, audit your current number inventory and replace prohibited numbers with approved DID numbers.

3. Implement rate limiting controls

Success Criteria: Call rates stay within the regulatory limits as specified in the Outbound calling restrictions – China documentation (for example, no more than 5 calls per minute using the same outbound caller ID as of the time of writing).

You have two implementation options depending on your calling method:

• For Direct Outbound Calls: Implement a rate limiting solution, such as the Amazon Connect Customer Outbound Rate Limiting sample from AWS Samples on GitHub. Configure rate limits per regulatory requirements.

• • For Amazon Connect Customer quick connect configuration: For outbound calls to China using quick connects:
    • In your Amazon Connect Customer instance, use contact flow only for the “Queue quick connect” type. Phone number quick connect and User quick connect are not supported.
    • Create a contact flow with the “Transfer to queue flow” type.

Create a new contact flow and select the “Transfer to queue flow” type for compliant outbound China calling.

• • Design the contact flow with the “Transfer to phone number” block using E.164 format (the international telephone numbering format), for example, +86XXXXXXXXXX.

Design the contact flow using the Transfer to phone number block with the destination number in E.164 format (for example, +86XXXXXXXXXX).

• • For the contact flow configured in the previous step, configure the quick connect with queue and flow specifications.

Configure the quick connect with the queue type, specifying the queue and the contact flow created in the previous step.

Monitoring: Set up observability and real-time alerts for rate limit violations. For example, you can use the following approach with Amazon Connect Customer and Amazon CloudWatch:

• Turn on Amazon Connect Customer contact flow logs.
• Create a CloudWatch Log Metric Filter to track call rate metrics.
• Create a CloudWatch Alarm to trigger when calls approach or exceed limits.
• Set up a CloudWatch Dashboard for real-time visibility.
• Configure Amazon Simple Notification Service (Amazon SNS) notifications to receive real-time alerts when calls exceed limits.

4. Configure outbound caller ID

Success Criteria: 100% of outbound calls display compliant caller identification.

Follow the Set up outbound caller ID documentation in the Amazon Connect Customer Administrator Guide for step-by-step instructions.

5. Implement number validation

Success Criteria: Validate number accuracy to prevent failed calls.

The following are two approaches for call validation:

• Use the AWS End User Messaging Phone Number Validate API for initial validation. Keep in mind that results may not reflect real-time number status, so this option works best when you need a quick initial check rather than a real-time check.
• Third-party validation services: For near real-time verification, you can integrate third-party validation services into your call workflow. This option is better suited when you need up-to-date number status before placing calls. Consult the AWS Partner Network or check AWS Marketplace for available solutions. AWS does not endorse specific third-party solutions. We recommend that you evaluate partner solutions independently based on your requirements.

Next steps

1. Audit your current number configurations against the requirements in this post, as non-compliant numbers can lead to immediate service interruptions.
2. Submit approval requests for new numbers through AWS Support.
3. Implement rate limiting using the GitHub sample or the quick connect configuration described in this post.
4. Configure number validation using AWS End User Messaging or a third-party service.
5. Verify that you and your team understand the restrictions and approved number types.
6. For ongoing operations, we recommend that you maintain observability dashboards and alerts, update approved number lists as requirements change, test call-back functionality for new numbers and after configuration changes, and validate team awareness of restrictions.

Conclusion

For the latest compliance requirements, see Outbound calling restrictions in the Amazon Connect Customer Administrator Guide. To implement rate limiting, see the Amazon Connect Customer Outbound Rate Limiting sample. For number validation, see the AWS End User Messaging Phone Number Validate API documentation.

Compliant China calling requires getting five things right: approved DID numbers, no prohibited number types, rate limiting within carrier thresholds, compliant caller ID, and validated destination numbers. By implementing these best practices, you can maintain reliable connectivity to your Chinese customers while reducing the risk of service disruptions.

After establishing compliant China calling operations, consider extending these practices to other regulated markets where you serve customers. You can also explore Amazon Connect Customer outbound campaign features to optimize how you manage high-volume calling operations.

Support resources

• Read the Amazon Connect Customer documentation for the latest compliance requirements and configuration steps.
• Contact AWS Support for technical implementation assistance.
• Reach out to your AWS Account Team for additional guidance tailored to your use case.

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