Service & Support

For multi-channel digital telephone systems, two standardized formats have been internationally recommended…

The PCM equipment system is currently the most commonly used integrated access communication equipment in domestic…

PDH (Plesiochronous Digital Hierarchy) is a system in which high-precision clocks are respectively set at each node of…

I. PDH PDH is the Plesiochronous Digital Hierarchy, divided into the European standard and the US/Japan standard.

In digital communication transmission systems, there are two series of digital optical terminals.

I. Introduction Although ADSL has become the current mainstream broadband access technology…

A Passive Optical Network (PON) refers to an optical distribution network (ODN) between the OLT and ONU that contains…

PON (Passive Optical Network) refers to a network in which the Optical Distribution Network (ODN) contains no…

PSTN is a circuit-switched network based on analog technology. Among numerous WAN interconnection technologies…

PTN supports bidirectional point-to-point connection channels for multiple packet-switched services…

A relay is one of the most commonly used actuating elements in electronic equipment.

Radio Frequency Identification (RFID) technology, also known as electronic tags or wireless radio frequency…

The full name of the RS232 interface is the 'serial binary data exchange interface technical standard between Data…

Pre-sales Service: Customers can obtain comprehensive product information through various channels before purchasing…

A Safe City is about building urban safety and harmony through the three-prevention system (technical prevention system…

I. Development Directions of Next-Generation SDH Technology and Products The development direction of next-generation…

technology The birth of SDH technology was inevitable. With the development of communications…

Figure 1 SDH G.709 multiplexing mapping structure Basic multiplexing unit Standard container C…

Regarding the future direction of the SDH system, there are two voices in the industry…

In security surveillance projects, fiber optic technology is increasingly used to transmit images, audio…

The transmission of any actual application information between communication devices is always accompanied by the…

The core diameter of multimode fiber is 50~62.5μm, with a cladding outer diameter of 125μm.

What is E1? E1 is the abbreviation for the European 30-channel Pulse Code Modulation (PCM), with a rate of 2.048Mbit/s.

The basic transmission module in SDH is STM-1, with a transmission rate of 155.52 Mbps.