Technical requirements and test methods for digital microwave telecommunication equipments(systems)of plesiochronous digital hierarchy (PDH)
Specification of Positive Temperature Coefficient (PTC) thermistors for the over-current protection of communications installations
Specification of Positive Temperature Coefficient (PTC) thermistors for the over-current protections of communications installations
High Frequency Switch-Mode Rectifier for Telecommunications
High Frequency Switch-mode Rectifier for Telecommunication
Laminated Metal Plastic Strip for Communication Cable and Optical Fibre Cable Part 5:Laminated Metal Plastic foil
Laminated Metal Plastic Strip for Communication Cable and Optical Fibre Cable Part 4:Laminated Copper Plastic Strip
Laminated Metal Plastic Strip for Communication Cable and Optical Fibre Cable Part 3:Laminated Steel Plastic Strip
Laminated Metal Plastic Strip for Communication Cable and Optical Fibre Cable Part 2:Laminated Aluminium Plastic Strip
Laminated Metal Plastic Strip for Communication Cable and Optical Fibre Cable Part 1:General
Test procedures for telephone sets
Technical Requirements and Measuring Methods of Telegraphone