Pig Farming Group Office Building (TDM Technology) Fiber Access Solution
Table of Contents
2 Introduction to PDH+PCM Technology
2.1 Advantages of Using PDH+PCM for Fiber Access Construction
3 Network Solution for This Project
3.2 Office Building Fiber Access Solution
3.2.1 Campus Communication Room Aggregation Access
3.2.2 Office Floors and Office Terminal Fiber Access
3.3 Key Features of the Office Building Fiber Access Solution
4.1 IDM MSAP-G3CP Multi-Service Access Platform
4.1.3 Technical Specifications
4.2 IDM NTD421 Dual-Channel Telephone Optical Terminal
4.2.3 Technical Specifications
1 Overview
A pig farming group has constructed a new office building at its headquarters, planning to establish the entire group's informatization centered around this new office building. Two office buildings have been completed, with 28 floors and 21 floors respectively.
Fiber cabling has already been completed in these office buildings, with fiber deployed from the equipment room to offices on each floor. The next phase of construction is to provide corresponding optical communication equipment based on the existing fiber infrastructure, enabling integrated services for the two office buildings, including broadband, IPTV, telephone, and meter reading data access and transmission.
2 Introduction to PDH+PCM Technology
2.1 Advantages of Using PDH+PCM for Fiber Access Construction
PDH and PCM are telecommunications technologies that have been in use for decades. The technology is simple, and with the reduction in component prices in recent years, the cost of remote terminals has become the same as or even lower than PON ONU terminals. They can carry several 100M Ethernet or Gigabit Ethernet connections over fiber, while also providing traditional telephone and data services. When users require 50M~100M bandwidth, PON technology offers no significant advantage as it cannot support more terminals. PON technology is designed for telecom service providers, and providing meter reading interfaces would result in relatively high costs.
Additionally, some users require two physically isolated Ethernet networks at home, such as one for telecom and one for broadcast television, or one for the public network and one for the enterprise intranet. In such cases, PON is not applicable, and only traditional PDH+PCM technology can be used.
The advantage of PON lies in its ability to operate without power at the optical distribution point, whereas power can be conveniently provided within a residential community. Therefore, traditional PDH+PCM technology will demonstrate significant advantages. PDH+PCM technology can not only provide multiple line-rate 100M or 1000M bandwidths but also conveniently offer other user interfaces with independently allocated channels. It is suitable for locations with high communication quality requirements, such as enterprise office buildings, military, and public security office buildings and residential quarters, providing external and internal network services for users in need.
3 Network Solution for This Project
3.1 Project Requirements
The pig farming group has completed the construction of 2 new office buildings at its headquarters, and fiber cabling has also been completed. According to customer requirements, the office buildings' telecommunications services will adopt a self-construction and self-operation model, providing employees with low-cost, high-quality network and telephone services while achieving profitability from internal operations. This departs from the traditional carrier-operated service model.
The project must implement the following functions:
Internal telephone switching within the local office area;
Trunk access to the carrier PSTN telephone network;
Trunk access to the telephone networks of other plant areas;
Broadcast television IPTV access;
Broadband service access from carriers;
Access of water, electricity, and gas meter reading data in the office plant area;
Video surveillance access;
Security monitoring data access (smoke detection, infrared intrusion prevention, etc.).
3.2 Office Building Fiber Access Solution
This solution adopts the PDH+PCM access scheme, implementing access of broadband, telephone, video, broadcast television IPTV, and meter reading data from the campus communication room to the office buildings. Additionally, it enables network connectivity to the group headquarters campus network, achieving networking across the entire pig farming group.
The central office equipment in the communication room adopts Raytrans IDM MSAP-CP equipment as the core switching and aggregation device, installed in the weak current equipment room of the office buildings. IDM NT421 terminal equipment is installed on office floors and within offices.
The network diagram for this project is as follows:
