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Database: 189760 (25 Oct 2025)
YD/T 3373-2018 English PDF
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YD/T 3373-2018
: (SIP relay technical requirements for operators to provide services to enterprise users)
Status: Valid
Standard ID
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YD/T 3373-2018
English
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(SIP relay technical requirements for operators to provide services to enterprise users)
Valid
YD/T 3373-2018
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Basic data
Standard ID
YD/T 3373-2018 (YD/T3373-2018)
Description (Translated English)
(SIP relay technical requirements for operators to provide services to enterprise users)
Sector / Industry
Telecommunication Industry Standard (Recommended)
Classification of Chinese Standard
M19
Word Count Estimation
7,780
Date of Issue
2018-12-21
Date of Implementation
2019-04-01
Regulation (derived from)
Ministry of Industry and Information Technology Announcement No.67 of 2018
Issuing agency(ies)
Ministry of Industry and Information Technology
Summary
This standard specifies the network architecture requirements, service requirements, protocol requirements, numbering route and number transmission requirements, bearer network requirements, service quality requirements and security requirements of SIP trunks used by operators to provide services to enterprise users. The service provider provides the SIP trunk to the enterprise in the user access mode or the peer-to-peer mode. The user access mode means that the enterprise user registers with the carrier server and uses the service provided by the operator. The peer-to-peer interworking mode refers to the internal deployment of the enterprise. The server is registered with the internal server of the enterprise. The enterprise server and the carrier server communicate with each other through the SIP protocol to realize the interworking between the enterprise user and other users. The SIP trunk in this standard refers to the SIP trunk provided by the operator to the enterprise through peer-to-peer interworking. This standard applies to SIP trunks provided by operators to enterprises.