How to Get China SIP Trunk Number

CTS consultants will help you get a China SIP Trunk through legal channels or third-party solutions.

CTS consultants will help you get a China SIP Trunk through legal channels or third-party solutions

China SIP Trunk / China SIP Trunking / SIP Trunk Install / SIP Trunk Setup / China SIP Provider / China SIP Server / China SIP Service

CTS focuses on helping enterprises use VOIP in China mainland, Hong Kong, and Taiwan.

Frequently asked questions about China SIP trunk services

Q: Who can provide SIP DID numbers in China?

A: China Telecom, China Unicom, and China Mobile can provide SIP trunk. Some third-party providers can also offer SIP trunk.

Q: I do not have a local company in China. Can I get a SIP number?

A: Sorry, you cannot. According to Chinese law, all phone numbers must be registered under a local company.

Q: When I contact Telecom/Unicom, they tell me it takes many days to apply for SIP service.

A: We can help expedite the process using our resources, so you can use your SIP number as soon as possible.

Q: When I search the web, why is there so little information about China SIP?

A: Government SIP trunk services were opened in 2018. Also, SIP requires technical expertise, so only a few people are knowledgeable about it.

Q: The telecom provider gave me a list of SIP parameters. It is very complex, and I have no idea how to proceed.

A: You need to purchase an SBC device and configure it with the parameters provided. We can help you with the configuration.

Q: Can I forward a SIP line to a remote office?

A: With the CTS SIP server, you can forward local SIP lines to remote locations.

Q: How can I check the ownership of a number?

A: Call 10000 (Telecom), 10010 (Unicom), or 10086 (Mobile) to verify if the number belongs to you.

Step 1 - Who can provide SIP Trunk Service in China

Who can provide SIP Trunk Service in China

CTS can help you with China SIP trunk consulting and setup
Two types of SIP trunk providers in China: Government Telecom Service Provider and 3rd Internet Telecom Service Provider

Related Resources

📊 Government vs 3rd Party SIP Providers — Compare your options

🔧 Get Your SIP Trunk Service — Start the application process

Government Telecom Service Provider

Complex both in technical and business processes

3rd Internet Telecom Service Provider

Flexible and easy for instant use

Provider China Telecom, China Unicom, China Mobile CTS and other providers
Connection Private network
internal connection to provider
Public network
connection through the internet
Type PSTN/E1/SIP(private) SIP Trunking(public)
Hardware CTS SBC Box with PSTN/E1/SIP module -
Bill payment Postpaid with monthly telecom phone bill Prepaid to 3rd party at first time
Number Owner license License is under the customer's own company Cannot provide owner license
Application time About 10 days after completing the business process 1 day after completing the business process
City number for application All cities in China Specified cities in China
Cost composition One-time Setup fee + number monthly fee + channels monthly fee + CTS service fee + one-time CTS SBC fee One-time Setup fee + number monthly fee + channels monthly fee + CTS service fee
Step 2 - China SIP Trunk Business Application Process

China SIP Trunk Business Application Process

CTS can help expedite your China SIP trunk business application
China SIP trunk business application process flow diagram
Step 3 - China SIP Trunk Technical Connection

China SIP Trunk Technical Connection

CTS can help with China SIP trunk technical setup and SBC configuration
China SIP trunk technical connection diagram showing SBC setup with telecom provider
CTS SBC device for China SIP trunk connection with telecom providers
Step 4 - China SIP Trunk forwarding to different locations

China SIP Trunk forwarding to different locations

CTS can help forward SIP numbers to overseas offices or cloud services
China SIP trunk forwarding diagram showing local numbers routed to remote offices and cloud services
Call us for China SIP trunk consulting

+86 21 33689396 (China SIP number)

+86 4008290998 (China Toll-free number)

Ready to Get Your China SIP Trunk?

CTS helps you navigate both government and third-party SIP trunk providers.

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