Expertise
Telecommunications
Communication links between sites, substations and control rooms: fibre, transport systems, backup radio links.
What the solution consists of
Every link between sites has a backup of a different physical type, and the state of the fibre and equipment is visible in monitoring.
Fibre-optic lines
Routes on poles, underground and along pipe racks; splice closures, patch panels, OTDR measurements, line records.
Transport systems
DWDM/CWDM to multiply fibre capacity, SDH and MPLS-TP for process telecom with ring redundancy.
Radio and cellular links
Microwave links and radio bridges between sites, LTE routers with two operators as a backup for remote sites.
Substation telecom
Links for telecontrol, protection relays and dispatch telephony to the technical requirements of grid companies.
Link monitoring
Availability, errors, attenuation and equipment temperature; alerts to the control room and by e-mail.
Records
Communication network diagram, fibre line records, patching tables, a log of measurements and repairs.
How it works: a scenario
A fibre break in the field, automatic failover to the radio link and a return after the repair: the exchange with the control room keeps running throughout.
Main link: fibre
Substation telecontrol and telephony run over the fibre line; the radio link between the masts stands by, and monitoring sees both links.
A break in the field
An excavator cuts the cable; the OTDR shows the distance to the break, so the crew goes straight to the right section.
Failover to the backup
Traffic moves to the radio link automatically and the exchange with the control room is not interrupted; the log records the time and the cause.
Back to the main link
After the splice closure is repaired, traffic returns to the fibre; the measurements and the log go into the line records.
What we do
- Fibre-optic lines: route design, cable laying, splicing, splice closures, patch panels, line records
- OTDR testing and attenuation measurement, fault location, splice closure repair
- DWDM/CWDM, SDH and MPLS-TP transport systems with ring redundancy
- Microwave links and radio bridges between sites
- LTE links with two operators as a backup for remote sites
- Substation process telecom: telecontrol, protection relays, dispatch telephony
- IP telephony and public address for control rooms
- Link monitoring: availability, errors, attenuation, alerts
- Migration from legacy transport systems without interrupting data exchange
- Support: scheduled measurements, upkeep of line records and diagrams
How the work goes
Survey
Routes, splice closures, patch panels, active equipment; measurements; a list of links and their redundancy.
Design
Communication network diagram, optical power budget of the lines, specification, a work plan by maintenance windows.
Construction and installation
Cable laying, splicing, equipment installation, post-installation measurements.
Commissioning and testing
Redundancy check under a programme: break of the working link, failover, recovery.
Support
Monitoring, scheduled measurements, repairs, updating of line records and diagrams.
Typical tasks
A single link to a remote site
We add a backup link of a different physical type: fibre plus radio or cellular; failover is automatic.
An ageing transport network
We migrate to modern transport systems without interrupting data exchange.
No data on the state of the fibre
We measure, draw up line records and set up monitoring.
A substation without a telecontrol link
We set up a link over fibre or radio to the grid company's technical requirements and hand it over under a test programme.
Not enough fibres
We multiply the capacity of the existing fibre with CWDM/DWDM instead of building a new route.
Frequent breaks on the route
We locate the section with an OTDR, eliminate the cause, and reroute the line or add a backup.
What the customer receives
Communication network diagram
Routes, nodes, links and their redundancy, patching tables.
Fibre line records
OTDR traces, attenuation per fibre, splice closures and patch panels, equipment specification.
Test reports
Redundancy and failover checks, acceptance reports, instructions for the operations team.
Result: working links with redundancy, fibre line records, diagrams and monitoring.
Questions
How should fibre be backed up: by radio or by cellular?
It depends on the distance, the terrain and the required bandwidth. A microwave link gives a stable channel with line of sight; LTE is simpler and cheaper but depends on coverage and the load on the operator's network. The choice follows from the survey.
Can the existing fibre be used?
Yes, after measurements. If there are few fibres, we multiply their capacity with CWDM/DWDM; damaged sections are repaired or rerouted.
How is the state of the links controlled after handover?
Monitoring of availability, errors and attenuation with alerts to the control room; scheduled measurements under the support contract.
Do you work to the technical requirements of grid companies?
Yes: telecontrol and telephony links for substations are set up to the grid company's technical requirements and handed over under a test programme with its participation.
09Contacts
Let us discuss your engineering task
Describe the site and the task: survey, modernisation, integration or support. We will reply and propose a format of work.
What happens after you get in touch
- Phone
- +7 777 824 89 99 (WhatsApp)
- info@net-core.kz
Contact us directly
Call us, message us on WhatsApp or send an e-mail — tell us about the site and the task.