China SIP Trunk
Provider & Solutions

CTS has been a leading China SIP Trunk provider since 2007. We help enterprises get 100% legal local numbers across Shanghai, Beijing, and nationwide.

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CTS China SIP Trunk & SIP Trunking Services

CTS focuses on helping enterprises use VOIP in China. We provide local numbers in the cloud, leveraging SaaS architecture to simplify connectivity.

Related Resources

📘 How to Get a China SIP Trunk Number — Step-by-step guide

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Microsoft Teams Direct Routing

CTS helps clients use SIP Trunking for Microsoft Teams Direct Routing in China.

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Global enterprise customers using CTS SIP trunking for Microsoft Teams Direct Routing in China

Whole China City +86 DID Available

CTS supports 95% of China city DID phone numbers with SIP Trunking.

+8621 Shanghai / +8610 Beijing / +8620 Guangzhou / +86755 Shenzhen / ...

CTS China SIP trunk coverage map showing major cities across China including Shanghai, Beijing, Guangzhou, Shenzhen and 30+ cities nationwide

Global SIP Trunk Connection

Customers can set up SIP connections to the CTS China Cloud SIP Server using a public IP, enabling connectivity anywhere in the world.

Global SIP trunk connection diagram showing how enterprises connect to CTS China Cloud SIP Server from anywhere in the world

Business & Technical Consulting

Customers sign contracts directly with the telecom provider under CTS consulting. We manage SIP trunk technical setup and troubleshooting.

CTS business and technical consulting process for China SIP trunk deployment from application to go-live

How to Apply for Service

  1. Provide your company name, address, and DID requirements.
  2. Government telecom review (1-2 weeks).
  3. Sign contract with government telecom.
  4. DID ready in 1-2 months, set up in CTS SIP Server.
  5. CTS connects you within 3 days.

China SIP Trunk Price and Billing

Pay To Pay For Pay Amount
Telecom Provider China City DID
Monthly Fee + Call Rates		 USD 8 per DID
USD 0.018 per minute
postpaid
CTS Private Cloud SIP Server in China
Monthly		 USD 100 for 30 channels
prepaid
CTS One-time Setup and Consulting USD 500 per application

Direct Payment and Centralized Payment

Customers can pay China Telecom directly, or CTS can pay on behalf of customers with an added service fee.

China SIP trunk billing structure diagram showing payment flow between customer, CTS, and telecom provider

Ready to Get Your China SIP Trunk?

Email us now for your China DID requirement.

Email CTS Now Call +86 21 33689396
CTS five-star customer satisfaction rating from enterprise clients