Project of external communication networks. Design of external communication systems Typical design of telephone sewerage

The organization of a communication channel between the automatic telephone exchange and the existing facility is carried out via a newly laid fiber-optic cable. The communication channel uses the Ethernet 10/100 Base data transfer protocol. To convert analog signals IP gateways are used for telephony signal Ethernet 10/100 Base-T. The total length of the designed cable route is 4122 m, of which 950 m in the existing cable duct with VOK DPS 048T cable, and 3172 m with VOK DPO-048 cable in a 40 mm polyethylene tube. The depth of the fiber-optic cable in the polyethylene tube is 1.2 m relative to ground level. In places where the cable passes under the roadway and when crossing underground structures, it is carried out in asbestos cement pipe D=100 mm. Centralized notification system This section contains a description of the equipment and principles of constructing a warning system for civil defense and emergency signals, designed for a multifunctional sports complex"Toksovo" and the surrounding area. To implement the tasks of alerting the population using civil defense and emergency signals, the following equipment is used:

• amplifier for sound broadcasting and warning signals “RTS-2000 OK”;
• power amplifier 250 W "RTS-2000 UM-250";
• horn loudspeakers installed on the territory of the sports complex;
• equipment of the P-160 complex of the civil defense headquarters, installed in the premises of the radio center of the Leningrad regional branch of OJSC NWT;
• data network equipment.

As base device The warning system, which has the ability to receive and relay messages from the central warning station (CSS), uses the RTS-2000 OK broadcasting, warning and control signal amplifier. The RTS-2000 OK amplifier is installed in a closed telecommunications cabinet. Alarm and radio equipment is installed in a wall-mounted telecommunications cabinet in administrative building complex. In accordance with the initial data of the Civil Defense and Emergency Management Department, the warning system must provide:

• automatic connection to territorial automated system centralized notification Leningrad region(TASCO LO);
• transmission of the “Attention everyone” signal (sirens) and TASCO speech signals.

In the event of an emergency at the city, district, regional or federal level, automatic switching on of equipment and retransmission of central warning signals to street loudspeakers must be ensured. To implement these tasks, an RTS-2000 OK warning signal amplifier, a power amplifier, horn loudspeakers, equipment of the P-160 complex of the Civil Defense Headquarters, installed in the premises of the radio center of the Leningrad Regional Branch of OJSC NWT, and equipment of a newly organized data transmission channel are used. When the “Start” command is received from the central communication center via a modem communication channel from the radio center premises via a newly organized channel, the RTS-2000 OK amplifier decodes this command, indicates the receipt of the command on the front panel of the RTS-2000 amplifier and turns on an alert. At the end of the centralized notification, the RTS-2000 amplifier switches the system to its original state. Power supply the equipment from sources uninterruptible power supply according to the 1st category. In accordance with clause 3.2 of the “Regulations on the St. Petersburg Territorial Warning Subsystem (OSS)”, in order to notify the population in the adjacent territory, the project provides for the installation of GR 10.03 loudspeakers (17 pcs.) with a power of 10 W on concrete poles or lighting poles on the territory of a multifunctional sports complex "Toksovo." The horn loudspeakers are connected using KSPZP 1x4x1.2 cables to a wall-mounted telecommunications cabinet located in the administrative building of the sports complex, with cables laid in the communication cable duct provided for by project 14-20/11-06-P-NSS. The orientation of outdoor loudspeakers and their directional patterns are presented in the drawing (see 14-20/11-06-P-SO.7). To receive centralized warning signals, loudspeakers must ensure that the signal level exceeds the noise level by 15 dB. At this noise level, the loudspeakers will ensure signal reception at a distance of up to 130-150 meters from the loudspeaker installation point. Connecting speakers to common system centralized notification for civil defense and emergency situations is carried out through an amplifier (see 14-20/11-06-P-SO.2) Construction of a wire broadcast distribution network The wired broadcasting network is planned to be installed in 55 cottages and judges' houses of the ski jumps of the sports complex (see 14-20/11-06-P-SO.6). In all rooms, administrative and technical rooms(in rooms with constant occupancy) it is planned to install radio sockets with a subscriber loudspeaker. Distribution of wired broadcasting signals is carried out using a 2x1.2mm PRPPM cable from a telecommunications cabinet installed in the administrative complex, then in the communication cable duct (see 14-20/11-06-P-NSS), as well as throughout the buildings and structures of the complex, up to subscriber radio sockets. Lay cables throughout the buildings and structures of the complex hidden in cable ducts provided for in the cable ducts section of the project.

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This working draft is based on:

Technical specifications of the Leningrad regional branch of OJSC NWTelecom No. 03-009/1372 dated April 14, 2008

Initial data provided by the customer.

The project was carried out in accordance with VSN 60-89 “Communication, signaling and dispatching equipment for residential and public buildings" Design standards, RD45.120-2000 “Technological design standards”, GOST 21.406-88 “Wired communications. Conventional graphic designations on diagrams and plans", SNiP 2.08.01-89* "Residential buildings", PUE "Rules for the installation of electrical installations", as well as existing safety provisions.

Telephonization. External networks

This project provides:

Construction of a 2-hole telephone sewer from the existing one. No. 255 to the designed residential building No. 1, with the installation of one inspection device of the KKS-2 type, on which to install reinforced type bottom covers with locking device"Crab". The construction of telephone sewerage is carried out using asbestos-cement pipes d=100 mm.

Construction of a 2-hole telephone sewer from the existing one. No. 216 to the designed residential building No. 2. The construction of telephone sewerage is carried out using asbestos-cement pipes d=100 mm.

Construction of a 2-hole telephone sewer from the existing one. No. 251 to the designed residential building No. 3. The construction of telephone sewerage is carried out using asbestos-cement pipes d=100 mm.

Laying of the fiber-optic cable VOK-48 from the telephone exchange premises at the address: Tikhvin, 3 microdistrict, no. 23 to terminal No. 212, in which install an optical coupling type MOGU-M-01-IV and then laying 3- x 16-fiber cables to telecommunication cabinets in each residential building (according to the diagram) - in the existing telephone sewer, then in the designed telephone sewer before entering the residential building being telephoned.

The construction of telephone sewerage, cable laying, installation of couplings and electrical measurements should be carried out in accordance with RD 45.120-2000.

Occupational health, safety and industrial sanitation measures.

In production construction work for installation of equipment and laying of cables, compliance with safety regulations must be ensured in accordance with the requirements of SNiP III-4-80 and POT RO 45-009-2003 (St. Petersburg, 2003).

Design solutions ensure fire safety while observing the measures provided for in the working drawings.

When working in wells, it is necessary to check the presence of gas in the well where the work will be done and in all wells adjacent to it. Wells must be ventilated before work begins.

Before starting work in the cable entry room, the air must be tested for the presence of hazardous gases using a gas analyzer. Use blowtorches gas burners and welding machines are permitted after it has been established that there are no explosive gases in the room. Smoking is prohibited in the cable entry room!

Due to the absence of harmful emissions, environmental protection measures are not provided for in this project.

Telephone installation of offices, buildings, new buildings and other facilities involves the creation of a modern telecommunications system with wide possibilities transmission of voice information both inside the office (implemented using a mini-PBX) and outside it (connection from the network of OJSC MGTS or other telecom operators).

Telephone installation involves carrying out a full range of works on installing telephones in buildings and structures and includes:

1) getting all necessary documents, namely, in the process of developing a telephone installation project for a new building, following works:

• Obtaining technical specifications for installing telephones at a facility in technical department OJSC "MGTS"
• Work in technical accounting of the telephone exchange of OJSC "MGTS" with technical documentation to select the optimal route for laying cables in the telephone sewer
• Development of a project for external telephone networks taking into account the technical conditions and requirements of OJSC MGTS
• Project development internal network telephone installation taking into account the technical conditions and requirements of OJSC MGTS
• Obtaining all necessary approvals for the delivery of the external and internal telephone networks project.

2) If telephone installation of the facility requires telephone sewer design, the following work is performed:

• Order a geobase from the State Unitary Enterprise "Mosgorgeotrest"
• Registration of permission to work with technical documentation in the technical records of OJSC MGTS
• Work in technical accounting of the telephone exchange of OJSC "MGTS" with technical documentation to select the optimal route for the construction of telephone sewerage
• Development of a cable sewer route (part of a telephone sewer project), installation of wells (subject to the availability of a consolidated network plan and technical specifications of the operating organization)
• Production of longitudinal profiles for cable ducting (part of the telephone ducting project)
• Development of a telephone sewer project
• Obtaining approvals from related organizations, the operating organization, OJSC "MGEC", OJSC "Rostelecom", District Administrations, DEZ, GUIS, the department of underground structures (OPS) in the State Unitary Enterprise "Mosgorgeotrest", etc. Approval of the telephone sewerage project in the technical accounting of OJSC "MGTS".

Thus, telephone installation project includes sections:

• internal telephone network;
• external telephone networks;
• telephone sewer.

In the current development conditions, telephone exchanges often issue technical specifications on removal of line-cable structures from the construction area, which requires development additional project takeaway LKS. The scope of work on the removal of line-cable structures is comparable to the scope of work on installing telephones at the facility, and, as a rule, includes the following sections:

• removal of external telephone networks;
• telephone sewer.

Our company, GK OKS LLC, also performs this work. Design and approval of a telephone installation project requires design organization licenses of the FSB of the Russian Federation to work with information constituting a state secret. Having a license from the FSB of the Russian Federation and permission from OJSC MGTS to work with technical documentation significantly speeds up the release of the project.

3) Creation of a communication infrastructure at the property in order to provide residents/tenants with access to local telephone communications wire line. Work to create communication infrastructure at the site includes supplying backbone and distribution networks to a residential building/office building, creating new and strengthening existing cable entries. A fiber-optic communication line can be used to connect to the network, copper cable etc.

See an example of a telephone installation project below.

The result of work on installing telephones in buildings and structures is the receipt of a Certificate of Acceptance of Telephone Installation.

Telephone installation of objects is one of the leading activities of our company. LLC "GK OKS" undertakes organizational and technical measures for installing telephones in buildings and structures with the provision of an acceptance certificate for telephone installation in the IGASN form. An individual scheme of work with each Client is used.

In accordance with MRR-3.2.06.06-06 “Collection base prices on design work for construction in the city of Moscow" and MRR-3.1.10.02-04 "Standards for the duration of design of construction projects in the city of Moscow" average estimated cost telephony design is:

• design of an internal telephone network (Internal telephone network project) – 56,000 rub.
• design of a structured cable network (SCS Project) - 65,000 rub.
• design of an external telephone network (including design of a telephone sewer system, Project External Telephony Networks) – 65,000 rubles.
• removal of networks from the construction zone (Project Removal of line-cable structures from the construction zone) – 90,000 rubles.
• design of laying a fiber optic cable (VOK Project) – 85,000 rubles.

For efficient and high-quality telephone installation of facilities, specialists from GC OKS LLC design and install analog and digital office telephone exchanges (mini-PBX, PBX).
It's hard to imagine modern business without effectively organized telephony. The telephone is a convenient compromise between a personal meeting and distant correspondence. For many, it is psychologically more comfortable to talk to a person on the phone than to look him in the eyes. The heart of telephony in any company is the office mini-PBX (), which connects employees with each other and with the outside world.

Mini-PBXs are divided into:

• analog PBX (description of analog mini-PBX >>>);
• digital IP-PBX (description of digital mini-PBX >>>).

Functionality of mini PBX:

• automatic (without operator) operation of mini PBX;
• local conversation "everyone with everyone" without occupying a city line;
• conference - simultaneous conversation of several internal and city subscribers;
• automatic selection of a free city line when entering the city;
• message about the release of the city line;
• auto dial mode;
• call forwarding;
• "Director - Secretary" mode;
• selection of telephones that respond to external calls;
• different ring for external and internal calls;
• selective installation of bans on exiting the city or intercity;
• remote listening of premises;
• connecting an answering machine, fax, modem;
• registration and management of the PBX via a computer;
• loud notification to employees.

Group of companies "United Complex Systems"offers a comprehensive supply of equipment for telephony facilities (