User's Manual
Table Of Contents
- Table of contents
- 1 Notes on the document
- 2 Safety regulations
- 3 Product description
- 3.1 Characteristics of the DIB-R5
- 3.2 Components
- 3.3 Interfaces
- 3.4 Wiring diagrams
- 3.5 Redundancy options
- 3.6 Scope of delivery
- 4 Operation
- 4.1 Safety measures and prerequisites
- 4.2 Switching on the DIB-R5 flexibleTx
- 4.3 Function tests and operational monitoring
- 4.3.1 Work equipment for function tests
- 4.3.2 Connecting the service computer
- 4.3.3 Checking operating states
- 4.3.4 Checking the availability
- 4.3.5 Checking standby carriers ‒ optional
- 4.3.6 Function tests and GNSS operational monitoring
- 4.3.7 Function tests and PTP operational monitoring (optional)
- 4.3.8 Checking external antenna coupling systems
- 5 Service interruption
- 6 Recommissioning
- 7 Maintenance
- 8 Troubleshooting
- 9 Index
Figure 29: Antenna configuration with four CHUs and external antenna coupling system
3.5 Redundancy options
The ACCESSNET-T IP provides numerous redundancy concepts to ensure the availa-
bility of services and features reliably even in exceptional situations. The concept of
designing system functions, function blocks, network elements and connection routes
redundantly, may be required to ensure site reliability and system reliability. Site and
system reliability refers to the capability of the network to perpetuate the operation of the
overall system, even if one site or route drops out completely or partially (due to technical
failure, natural phenomena, acts of terrorism etc.).
The system technology allows flexible network structures and scalable redundancy solu-
tions that account for the different requirements for availability and capacity within an
complete network.
If the DIB-R5 flexibleTx should be isolated from the rest of the network, it still provides
most of its features in local fallback operation. Especially security-related features like
authentication and air interface encryption are supported. Hence, DIB-R5 flexibleTx ena-
bles a fully functional fallback operation and full redundancy for the important compo-
nents transceiver (CHU), control unit (BSCU) and power supply.
The following chapters describe the available redundancy options in conjunction with
DIB-R5 flexibleTx:
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Redundant main control channel (MCCH)
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Carrier redundancy
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Controller redundancy
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Fallback operation
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Stand-alone operation
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Redundant V
AC
power supply
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Redundant connection to the transport network
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Redundant synchronization (GNSS, PTP)
The redundancy options can be combined with each other.
Product description
Redundancy options
DIB-R5 flexibleTx
58 Operation Manual 90DIBR5flexibleTxOM02 - 1.2