YD 5077-2014 (English Version) PDF

Scope: This specification is the technical basis for construction quality inspection, stage acceptance, and completion acceptance in the installation project of fixed telephone switching network TDM switching equipment, soft switching equipment, and user database SDB equipment. It can be implemented as a reference for other network switching equipment installation projects. The acceptance index requirements for special projects not included in this specification can be implemented based on the requirements of the technical specifications and design documents of the engineering project. If there is any conflict between this specification and relevant national standards and norms, the national standards and norms shall prevail.

YD 5077-2014 history

2014 YD 5077-2014 Accepting Specification for PSTN Installation Engineering
2005 YD/T 5077-2005 Accepting Specification for PSTN Exchange Installation Engineering
1998 YD 5077-1998 Accepting Specifications for SPC Exchange Installation Engineering