Technical Project for SCS and PBX Systems
The design institute participated in organizing the structured cabling system design for the building construction.
Organization of Structured Cabling System
This project volume contains solutions for organizing structured cabling systems, local area networks, and institutional automatic telephone exchange in the archive storage building.
Cable Network Design
What is SCS
The structured cabling system in the archive storage building is implemented according to information technology standards.
The SCS is designed based on equipment from leading manufacturers, cable channels, termination devices, and information outlets. The designed equipment ensures reliability, data transmission accuracy, protocol compatibility, and required information transfer speeds. Active equipment - LAN switches are provided in the local network section of this project.
Design of Main System Components
Servers are provided under a separate project. The archive storage building provides 184 ports for workstations, network devices (printers, faxes, scanners), telephone ports, and 20 Wi-Fi wireless access points. Wireless access points are organized in storage areas.
Workstation placement is calculated as follows:
- 1 workstation (2 SCS ports) per 6m² of office space;
- 4 workstations (8 SCS ports) in security rooms;
- 4 workstations (8 SCS ports) in managers' offices;
- 3 workstations (6 SCS ports) for middle management;
- Minimum 1 workstation (2 ports) per office area for network equipment connection.
The central SCS equipment includes 19" patch panels with 24 distribution ports and 50 telephone ports capacity.
The horizontal subsystem includes information outlets at workstations (telephone and LAN), cable lines from outlets to patch panels, and patch cords in floor distribution points.
SCS Structure Justification
Includes backbone cables:
- 4-core multimode fiber optic 50/125 for LAN - laid from the complex distribution unit to SCS distribution cabinets on all floors;
- UTP 50x2x0.5 unshielded twisted pair for telephone communication;
- Communication connections in the building distribution point.
For LAN network redundancy to improve backbone cable subsystem reliability, additional multimode fiber optic cables are provided between storage buildings.
The horizontal SCS subsystem uses UTP 4x2x0.5 Category 6 cable and provides data transmission up to 1 Gbps to workstations. The backbone subsystem provides 1 Gbps data transfer within each building and 10 Gbps between buildings.
Project Resources
SCS equipment is installed in 19" floor cabinets in server rooms and cross-connect rooms on each floor.
User cables of the structured cabling system are laid together with electrical socket network cables in separate compartments of the same cable channel.
Local Area Network Components
What is LAN
LAN stands for Local Area Network, designed to organize authorized access for archive storage users to information and technical resources, databases, software, and external global network resources.
LAN construction uses multi-level architecture based on hierarchy and modularity principles to ensure high reliability, scalability, and performance.
Due to low network load, the network core is implemented as a "collapsed core" where core and distribution levels are combined.
What is Network Core
The LAN network core task is high-speed traffic switching. Core devices perform high-speed routing, redundancy, load balancing, and efficient bandwidth utilization.
Traffic Distribution
The aggregation level performs connecting functions and user traffic distribution, requiring optimal load balancing between parallel connections.
Station Connection Procedure
The access level is organized in server rooms, cross-connect rooms, and checkpoint rooms for connecting workstations and peripheral devices to LAN.
Access level switches should facilitate connection administration and automate network support operations. PoE switches are provided for WiFi access points and IP telephone subscribers.
Server Level System Description
The server level is organized using core and distribution level switches. Server connections use Gigabit Ethernet standard.
Information protection from unauthorized access is ensured using standard protection mechanisms, certified protection tools, administrative methods, and access restrictions to server rooms and network equipment.
Types of Telephone Communication Systems
What is Telephone System in Design and Construction
This term refers to automatic telephone communication system designed to organize automatic telephone communication with service integration, providing internal communication, external network access, additional services, flexible call routing, and system expansion capabilities.
How to Implement Telephone System
The telephone system is built on converged software-hardware platform with IP architecture, featuring quality and high performance.
What is PBX
PBX in the combined storage building provides 2x2Mbps public network connections + 1x2Mbps internal network, 360 analog subscriber line ports, 72 digital UPoE ports, and IP telephony up to 60 simultaneous connections.
Analog, digital UPoE, and IP subscribers connect through cross-connect equipment and PoE switches.
PBX Functions
The PBX provides complete corporate-class communication services including voicemail and CTI Basic Client functions through functional software package.
The designed automatic telephone system includes institutional automatic telephone station, management terminal, channel equipment for provider connections, cross-connect equipment, uninterruptible power supply, and digital, analog and IP telephone sets.
PBX and SCS Installation
Designed cables are laid in corridors above suspended ceilings on wire cable trays and in cross-connect rooms on all building floors.
User cables are laid together with technological electrical socket network cables in separate compartments of the same cable channel.
Inter-floor cables are laid in weak current system risers - on walls using wire cable trays, in ceilings - in steel pipes.
Power Supply and Grounding
Equipment power supply is provided from two independent inputs through automatic transfer switches and uninterruptible power supplies.
Active equipment - LAN switches, IP switches - are powered by ~220V AC from outlet blocks installed in 19" cabinets, connected through UPS systems.
Protective grounding buses are provided in server rooms, telephone system rooms, and cross-connect rooms on each floor.
Applied Labor Protection and Safety Standards
The working project is developed according to health standards. Equipment noise doesn't exceed permissible levels. Installation works must follow safety measures and labor protection rules.
Equipment grounding must be performed according to electrical installation rules, construction standards, and manufacturer requirements. Protective grounding resistance should not exceed 4.0 Ohms.