For many years, the ‘Dynanet’ family of PDH Transmission telecoms products have well served Public Operator and Private Network Customers across the Telecoms, Utilities, Transport and Public Safety markets with high availability mission critical infrastructure, and indeed some networks are continuing to provide good operational service.
They were first introduced by Nokia over 20 years ago, and were continued in recent years by DNWP. Production of the majority of the product range was ceased in 2019.
Spare parts for continued operational service
@YellowsBestLtd satisfies world-wide customer product sourcing requirements for current and ‘legacy’ equipment technologies from a wide range of Original Equipment Manufacturers (O.E.M.s).
For the ‘Dynanet’ range, we have recently obtained of a number of additional refurbished and surplus equipment items. Hence, for those customers continuing to maintain their networks, there now exists the opportunity to increase stocks of spare parts to take advantage of the current availability.
Stocklist of items for immediate supply
Here is a list of the main items currently in stock, though there may be a few additional parts that can be supplied. Hence, please check and if you do have any requirements, please let us know. We look forward to hearing from you.
Part Number
Description
CC 24002
DB2 2×2 Mb/s Branching Unit (B2), 75ohm
DB2 B2 – CC 24002
Part Number
Description
CC 24011
DB2 2 Mb/s Switching Unit (X2), 75ohm
DB2 X2 – CC 24011
Part Number
Description
CC 24101
DN2 2×2 Mb/s Interface Unit (IU2), 75ohm
DN2 IU2 – CC 24101
Part Number
Description
CC 24111
DN2 Control Unit (CU), 75 ohm
CG 24170
DN2 Bus Power Unit (BPU)
CG 24171
DN2 Extended Bus Power Unit (EBPU)
CU 24013
Data Interface Unit (DIU) 2M, nx64k: G.703/704, 75ohm
DIU nx64k – CU 24013
Part Number
Description
D-21470
Euro Connector, 3×7
Connector 3×7 – D-21470
Part Number
Description
D-24204
Optical Teleprotection Interface Unit, C37.94
C37.94 – D-21470
Part Number
Description
T31094.01
DCN Adapter C4.0
DCN Adapter C4.0 – T31094.01
Part Number
Description
T37870.01
NDM 19in 17-slot Subrack
19in Subrack – T37870.01
Part Number
Description
T37871.01
NDM DN2 19in 17-Slot Subrack
T37882.02
NDM DC Unit (NDUe)
NDUe – T37882.02
Part Number
Description
T37885.01
NDM Ring Generator
Ring Generator – T37885.01
Part Number
Description
T37885.02
NDM Ring Generator + DC/DC converter
Ring Generator – T37885.02
Part Number
Description
T37889.01
NDM Backup Unit (NBU)
NDM Backup Unit – T37889.01
Part Number
Description
T65580.01
ACL2i PF GEN Line Terminal Card
ACL2i PF GEN – T65580
Part Number
Description
TA 21513
Optical Line Terminal Repeater (DF2-8), 1300 nm LED MM/SM
TA 21516
Optical Line Terminal Repeater (DF2-8), 1300 nm LASER SM
TA 21518
Optical Line Terminal Repeater (DF2-8), 1300 nm LASER LP
DF2-8 – TA 21518
Part Number
Description
TC 21101
DM2 Multiplexing Unit, 75ohm
DM2 – TC 21101
Part Number
Description
TC 21301
DM8 Multiplex Equipment, 75ohm
TC 21705
Supervisory Substation
TC 21710.01
TMS Adapter
TU 21122.5
Data Interface Unit (DIU) 48..64k, V.11, 10ch
TU 21124
Data Interface Unit (DIU) nx64k, V.11/V.35/X.21, 2ch
TU 21124.05
Data Interface Unit (DIU) nx64k, V.11/V.35/X.21, sync
Surplus and Refurbished Items for continued operational service
Many Customers have ‘legacy’ telecommunications networks which are continuing to provide good operational service. Particularly where functional requirements have not changed, it makes sense to avoid or delay costly and time-consuming change-out replacement projects, by obtaining spare parts.
@YellowsBestLtd satisfies world-wide customer product sourcing requirements for current and ‘legacy’ equipment technologies from a wide range of Original Equipment Manufacturers (O.E.M.s).
Stocklist of Nokia ‘Dynanet’ Spare Parts – Available for immediate supply
For the ‘Dynanet’ family of PDH Transmission telecoms products, which has provided 20+ years of service, we still have a few spare units are in stock and available for immediate supply. These items have been mostly retrieved from operational service during Customers’ decommissioning projects, and have been refurbished, tested and are warranted for working operation.
Given that production of the majority of the product range was ceased in 2019 or before, it is recommended to consider purchasing spare parts whilst there is still availability.
Here is a list of the main items currently in stock, though there may be a few additional parts that can be supplied. Hence, please check and if you do have any requirements, please let us know. We look forward to hearing from you.
Part Number
Description
CC 24002
DB2 2×2 Mb/s Branching Unit (B2), 75ohm
CC 24011
DB2 2 Mb/s Switching Unit (X2), 75ohm
CC 24101
DN2 2×2 Mb/s Interface Unit (IU2), 75ohm
CC 24111
DN2 Control Unit (CU), 75 ohm
CF 24186
DN2 19in Subrack
CF 24186.09
DN2 19in Subrack, grey-L91 EMC
CG 24170
DN2 Bus Power Unit (BPU)
CG 24171
DN2 Extended Bus Power Unit (EBPU)
CU 24013
Data Interface Unit (DIU) 2M, nx64k: G.703/704, 75ohm
D-21470
Euro Connector, 3×7
D-24204
Optical Teleprotection Interface Unit, C37.94
T30506.09
17-slot DYNANET Subrack
T30851.02
Subrack Power Adapter (SPA)
T31094.01
DCN Adapter C4.0
DCN Adapter C4.0 – T31094.01
Part Number
Description
T37870.01
NDM 19in 17-slot Subrack
T37871.01
NDM DN2 19in 17-Slot Subrack
T37882.01
NDM DC Unit (NDU)
T37882.02
NDM DC Unit (NDUe)
T37885.01
NDM Ring Generator
Ring Generator – T37885.01
Part Number
Description
T37885.02
NDM Ring Generator + DC/DC converter
Ring Generator – T37885.02
Part Number
Description
T37889.01
NDM Backup Unit (NBU)
NDM Backup Unit – T37889.01
Part Number
Description
T65520.01
ACL2 RM DC Power Gen
T65580.01
ACL2i PF GEN Line Terminal Card
ACL2i PF GEN – T65580
Part Number
Description
TA 21513
Optical Line Terminal Repeater (DF2-8), 1300 nm LED MM/SM
TA 21516
Optical Line Terminal Repeater (DF2-8), 1300 nm LASER SM
TA 21518
Optical Line Terminal Repeater (DF2-8), 1300 nm LASER LP
DF2-8 – TA 21518
Part Number
Description
TC 21101
DM2 Multiplexing Unit, 75ohm
TC 21301
DM8 Multiplex Equipment, 75ohm
TC 21705
Supervisory Substation
TC 21710.01
TMS Adapter
TG 21261
Ring Generator 25HZ 15W
TU 21122.5
Data Interface Unit (DIU) 48..64k, V.11, 10ch
TU 21124
Data Interface Unit (DIU) nx64k, V.11/V.35/X.21, 2ch
TU 21124.05
Data Interface Unit (DIU) nx64k, V.11/V.35/X.21, sync
Continued Supply of Spare Parts – Surplus and Refurbished Items
@YellowsBestLtd satisfies customer product sourcing requirements for current and ‘legacy’ equipment technologies.
Despite the recent ‘rampdown’ announcement by DNWP for the ‘Dynanet’ range, we should be able to continue to supply refurbished and surplus equipment for as long as required, but the likely effect of the discontinuation of production will be to squeeze the availability of remaining stocks, with a consequential impact on pricing.
Hence, it is recommended that if there is anything that might be needed, it would be best to consider purchasing it in good time to ensure availability of items and best prices.
Here is a list of the main items immediately available from current stocks, though there may be a few additional parts that can be supplied. Hence, please check and if you do have any requirements, please let us know. We look forward to hearing from you.
Part Number
Description
24204
TPSO H/W Module
CC 24002
DB2 Branching Unit, B2 2×2 Mb/s 75 ohm
CC 24011
DB2 2 Mb/s Switching Unit, X2 75 ohm
CC 24101
DN2 Interface Unit (IU2) 2×2 Mb/s 75 ohm
CC 24111
DN2 Control Unit (CU) 75 ohm
CF 24186
DN2 19″ Subrack
CF 24186.09
DN2 Subrack 19″, grey-L91 EMC
CG 24170
DN2 Bus Power Unit (BPU)
CG 24171
Extended DN2 Bus Power Unit (EBPU)
CU 24013
Data Interface Unit (DIU) 2M, nx64k: G.703/704, 75 ohm
T30506.09
17-slot DYNANET Subrack
T30851.02
Subrack Power Adapter (SPA)
T37870.01
NDM ACM2 19in 17-slot subrack
T37871.01
NDM DN2 19″ 17-Slot Subrack
T37882.01
NDM DC Unit (NDUe)
T37882.02
NDM DC Unit (NDUe)
T37885.01
NDM Ring Generator
Ring Generator – T37885.01
Part Number
Description
T37889.01
NDM Backup Unit (NBU)
NDM Backup Unit – T37889.01
Part Number
Description
T65520.01
ACL2 RM DC Power Gen
T65580.01
ACL2i PF GEN Line Terminal Card
ACL2i PF GEN – T65580
Part Number
Description
TA 21513
Optical Line Terminal Repeater 2-8 M, 1300 nm LED MM/SM
TA 21516
Optical Line Terminal Repeater 2-8 M, 1300 nm LASER SM
TC 21101
DM34 Mux Card
TC 21301
DM8 Multiplex Equipment, 75 ohm
TC 21705
Supervisory Substation
TC 21710.01
TMS Adapter
TG 21261
Ring Generator 25HZ 15W
TU 21122.5
Data Interface Unit (DIU) 48..64k V.11 10ch
TU 21124
Data Interface Unit (DIU) NX64k V.11/V.35/X.21 2CH
Phased Discontinuation of Production – 31st May 2019 – 31st January 2020
The production of the ‘Dynanet’ family of PDH Transmission telecoms products, first introduced by Nokia over 20 years ago, and continued in recent years by DNWP, is finally being ended.
This product range has well served Public Operator and Private Network Customers across the Telecoms, Utilities, Transport and Public Safety markets with high availability mission critical infrastructure, and indeed some networks are continuing to provide good operational service.
Essentially almost all the old equipment items, with a very few exceptions such as the TPS64, are being completely discontinued in a phased way according to these milestones, which have already commended:
31st May 2019 – DM8 Multiplexers, DF2-8 Optical Terminals, RPSA
31st October 2019 – DM2 Multiplexers, Subs/Exch & VF Cards, DN2 IU2, Service Terminals, V.28/V.11 DIU
31stJanuary 2020 – DB2, DN2 CU & BPU, G.703 & V.110, DIU, Ethernet I/F, Ring Gen, NDM 19” Subrack, NDA
@YellowsBestLtd satisfies customer product sourcing requirements for current and ‘legacy’ equipment technologies.
Should you wish to read the full ‘ramp-down’ notice and know more about obtaining equipment before it is no longer available, then please get in touch.
The UMUX platform provides carrier-grade reliable multi-service multiplexing and aggregation functions over copper and fibre networks. A variety of voice (POTS, FSX, FSO, ISDN) and data (e.g. G.703, V.11, V,24, V,35) interfaces, SHDSL and Ethernet (including PoE+ and EoS) services are available.
UMUX module range
The modular and flexible housing provided by the UMUX 1500 (8U, 21-slot) and UMUX 1200 (4U, 8-slot) 19” subracks provide the perfect solution for all applications and locations, offering redundant controller and power supplies.
‘Legacy’ telecoms history
The UMUX SDH product portfolio was originally launched 1991 by Ascom, which subsequently became Keymile.
In 2003, by when 70,000 units had been deployed worldwide, the ‘enhanced’ UMUX multiservice access platform was introduced, offering the delivery of ATM, TDM and IP based services from the same platform, with support for IP/Ethernet, ADSL, VoDSL and G.SHDL.
Keymile was sold to ABB in 2017 when the UMUX range was discontinued, and then was acquired in 2019 by DZS.
Continuing to provide operational service
The UMUX, together with the UNEM network management system and ‘sister’ LINERUNNER and MILEGATE products, continues to provide operational service with various global Operator, Utilities and Transport companies.
@YellowsBestLtd supports requirements to maintain these networks by supplying various spare part items from refurbished and surplus stocks in perfect working order.
There follows a list of the main elements that are typically provided, though other items can be provided. Please let us know of any specific requirements you may have. We look forward to being of assistance.
The Nokia ‘Dynanet’ family of PDH Transmission telecoms products has served customers well for the last 20+ years, and indeed some networks continue providing good operational service.
Dynanet Subtrack
@YellowsBestLtd has supported requirements to maintain these networks by supplying various spare part items from refurbished and surplus stocks in perfectly working order.
However, demand has recently reduced and warehouse space is needed, so now the time has come to recycle / dispose of a large proportion of the remaining equipment. Consequently, there remains a short-term opportunity to obtain any items still required to maintain existing deployed infrastructure, before the products are gone.
Here is a stock list of the main items currently available, though there may be a few additional parts that can be supplied. Hence, please check and if you do have any requirements, please let us know – before it’s too late! We look forward to hearing from you.
Part Number
Description
24204
TPSO H/W Module
CC 24002
DB2 Branching Unit, B2 2×2 Mb/s 75 ohm
CC 24011
DB2 2 Mb/s Switching Unit, X2 75 ohm
CC 24101
DN2 Interface Unit (IU2) 2×2 Mb/s 75 ohm
CC 24111
DN2 Control Unit (CU) 75 ohm
CF 24186
DN2 19″ Subrack
CF 24186.09
DN2 Subrack 19″, grey-L91 EMC
CG 24170
DN2 Bus Power Unit (BPU)
CG 24171
Extended DN2 Bus Power Unit (EBPU)
CU 24013
Data Interface Unit (DIU) 2M, nx64k: G.703/704, 75 ohm
T30506.09
17-slot DYNANET Subrack
T30851.02
Subrack Power Adapter (SPA)
T37870.01
NDM ACM2 19in 17-slot subrack
T37871.01
NDM DN2 19″ 17-Slot Subrack
T37882.01
NDM DC Unit (NDUe)
T37882.02
NDM DC Unit (NDUe)
T37885.01
NDM Ring Generator
T37889.01
NDM Backup Unit (NBU)
T65520.01
ACL2 RM DC Power Gen
T65580.01
ACL2i PF GEN Line Terminal Card
TA 21513
Optical Line Terminal Repeater 2-8 M, 1300 nm LED MM/SM
TA 21516
Optical Line Terminal Repeater 2-8 M, 1300 nm LASER SM
TC 21101
DM34 Mux Card
TC 21301
DM8 Multiplex Equipment, 75 ohm
TC 21705
Supervisory Substation
TC 21710.01
TMS Adapter
TG 21261
Ring Generator 25HZ 15W
TU 21122.5
Data Interface Unit (DIU) 48..64k V.11 10ch
TU 21124
Data Interface Unit (DIU) NX64k V.11/V.35/X.21 2CH
@YellowsBestLtd has now reached the significant milestone of completing three years of trading; something often useful to be able to state when qualifying for opportunities and registering with business customers.
Our aim continues to be “Keeping Customers Operational”; understanding requirements and fulfilling them by providing a range of management services and solutions, including:
consultancy, such as business development planning
technical support, e.g. day-rate engineering, NMS assistance
systems supply, including legacy IT servers / workstations
spares for infrastructure, in particular telecoms and CCTV cameras
repairs at module and component level, e.g. LED displayboards
value recovery through reverse logistics, resale and recycling
As we move forward in year four, we’d very much like to discover what else to provide to our existing Customers, as well as what would be of interest to potential clients. We’re always keen to enhance our range of #business services, increase the #enterprise infrastructure we support and expand our mix of #sustainable solutions we offer for supply and maintenance of new and legacy #technologies and products.
Please get in touch to discuss your challenges; whether you’re implementing new systems or maintaining existing infrastructure to serve your operational business needs. We look forward to hearing from you.
@YellowsBestLtd our mission is to provide our Customers with Management Services and Solutions so their infrastructure networks continue to serve and perform – “Keeping Customers Operational”
Needs vary from the launch of the latest IT and Telecoms technologies through to the support of well-established legacy systems.
Given that each organisation is unique, both in its business practices and deployed infrastructure, then we find that its best to take a flexible approach and provide tailored services to suit exacting demands.
Our no-cost and no-obligation Customer consultation is all about finding out needs, regardless of technology or manufacturer, and then sourcing the required solution(s), which may mean seeking out difficult to obtain products or requiring the supply of specialist services. So in essence, it’s not about us ‘selling’ them something we have, but rather our clients ‘telling’ us what to provide. Making it easier and more convenient for busy procurement and operational teams, saving them effort, time and cost.
We’re always keen to see how we can enhance our range of #business services, increase the #enterprise infrastructure we support and expand our mix of #systems solutions to supply the required #technologies and products for our customers.
Please help us understand what services would be of interest to you to support your systems requirements, by getting in touch; we look forward to hearing from you.
Customers who own infrastructure systems usually require some form of test equipment to assist with the build, operation and maintenance activities.
Given the mixture of old and new technologies now deployed, consequently the range of available test equipment options has grown considerably. And like the infrastructure systems themselves, new functionality demands and obsolescence issues also affect the associated test equipment needs and availability.
@YellowsBestLtd assists Customers by sourcing the required test equipment, supplying either modern or legacy units. Often refurbished ex-hire equipment in excellent condition and at commercially attractive prices makes sense over leasing. This ensures the continued availability of sets of the appropriate specification, which may become discontinued by the manufacturers over time.
If necessary, we can also arrange the repair of existing units, especially those that perform very specific functions that cannot easily be replicated with more recent equipment.
There follows a brief description of many of the types of test equipment available; we would be very keen to hear from you to understand your specific requirements, so please get in touch!
Calibration Checkboxes
Calibration checkboxes, or electrical checkboxes, are used for routine observations of test equipment and allow users to maintain accuracy in between official calibration procedures. Suitable for use with PAT testers and with other testers and instruments.
Calibration Checkbox
Component Analysers
These test the efficiency and status of components including transistors and capacitors. An essential instrument for development engineering when specific components are used in product design.
Component Analyser
Earth Loop Testers
Loop impedance testers, or loop testers, verify the loop impedance of a live electrical circuit without disconnecting from the electrical supply. Most testers include non-tripping RCD technology as standard to prevent unexpected outages.
Earth Loop Tester
Earth Testers
These verify that electrical current paths are safely earthed. Earth spike testers, high current loop testers with earth stakes and leads are available.
Earth Tester
EMF Meters
EMF meters are used for verifying the presence of electrical magnetic fields given off by electrical equipment. Ideal for use in heavy-duty electrical applications and laboratory testing conditions.
EMF Meter
EVSE Testers
EVSE testers are purpose-built for the installation, testing and maintenance of electrical vehicle supply equipment and are an essential for use by electrical vehicle charging point installers, manufacturers and anyone else involved with EVSE equipment.
EVSE Tester
Insulation & Continuity Testers
A wide range of insulation and continuity testing instruments which include Megger insulation testers, insulation resistance testers, Fluke testers and insulation meters from Amprobe, DiLog, Seaward, Metrel, Martindale, Kewtech and Extech.
Insulation and Continuity Tester
LCR Meters
LCR meters get their name from their testing capabilities – they can test inductance (L), capacitance (C) and resistance (R).
LCR Meter
Multifunction Testers
Ideal for use when completing or testing an electrical installation. The huge range of MFTs include the Fluke 1600 range and Megger installation testers.
Multifunction Tester
Optical Fibre Inspectors
Quickly find and inspect the right port. Like having a built in flash-light so you can see in dark areas and dense panels. Pause button holds the image for viewing when it’s hard to get it just right. Bright backlit display. Screw-on probe tips to support most connector types.
Optial Fibre Inspectors
Optical Fibre Visual Fault Locators
Locates fibres, finds faults, verifies continuity and polarity. Locates visual faults including tight bends, breaks and bad connectors. Easily verifies polarity and identifies fibres. Features continuous and flashing modes.
Optical Fibre Visual Fault Locator
Optical Power Meters
Multimode and Singlemode Power and Loss Measurements. Multiple kit configurations with light sources for single mode, multimode and PON fibre optics. Min/Max capability automates tracking of intermittent power fluctuations.
Optical Power Meter
PAT Testers
For Portable Appliance Testing (PAT) routine safety checking of electrical equipment, including dual insulation test voltages and portable RCD lead testing, with adjustable PASS testing limits and substitute/mains powered leakage testing procedures.
PAT Tester
Power Quality Analysers
These provide a comprehensive snapshot of how power is being used in your facility and verify where energy is being lost. The latest power analysers and power analysis tools include those from Fluke and Hioki.
Power Quality Analyser
Production Line Safety Testers
Perfect for laboratories and product design applications, the equipment in this category can be used to verify electrical safety, service equipment using multiple electrical parameters and to simulate PAT conditions.
Production Line Safety Tester
Proving Units
An essential accompaniment to a voltage tester, proving units verify that the tester remains accurate both before and after testing. Both the NICEIC and NAPIT strongly recommend using these regularly when testing.
Proving Unit
RCD Testers
For testing RCD trip time and overall residual current device safety/efficiency. Available are handheld RCD testers, Megger RCD testers, RCD analysers and multifunctional RCD testers which also measure loop and PSC.
RCD Tester
Socket Testers
These testers are placed into a socket to assess faults with the wiring using audio/visual feedback.
Socket Tester
Telecom Datacom Analysers
Ideally suiting traditional telecommunications networking requirements, typically providing testing at V.24, V.35, V.11/X.21 interfaces at rates up to 2 Mb/s. Also a full range of BER/BLER measurements, control-circuit timing analysis with transitions diagrams and storage in text and graphic form.
Telecom Datacom Tester
Voltage Testers
Voltage Testers
These verify the presence of voltage, and allow full test of voltage levels. Instruments are available from the leading test equipment manufacturers such as Fluke, Kewtech, Martindale, Amprobe and Megger.
Most Customers’ infrastructure systems now consist of a wide range of technologies from the very old to relatively recent, having been built to serve operational requirements for a number of years. In many cases, these requirements don’t significantly change, and it therefore makes sense to keep these systems in place to maximise the use of the investment and avoid whole-scale change-outs that would be costly, disruptive and unnecessary.
@YellowsBestLtd locates hard-to-find replacement spare parts to keep legacy infrastructure in operational service that has been deemed ‘obsolete’ by the manufacturers, as well as supplying additional spares for newer systems that can be used to increase capacity or provide alternative interfaces.
Typically we provide refurbished spares, tested and working, but often it is the case that unused products from surplus stocks can be supplied. Hence for both old and new systems, we are usually able to source parts at very commercially competitive rates and with short lead-times.
Here is a selection of items that we’ve recently been helping customers procure or obtain parts for. Keen to hear what requirements you may have, so please get in touch.
