Products Archives - Management Services and Solutions

‘Legacy’ Infrastructure Ongoing Maintenance

Continuing in Keeping Customers Operational

Over the last nine years, @YellowsBestLtd has sought out new, surplus and refurbished products and spare parts to assist with the aim of supporting Customers to maintain rather than replace their infrastructure networks, and as we enter our landmark tenth year, we continue to do so.

The alternative of wholesale replacements requires prohibitive investment costs and long project timescales to implement. And it can be the case that suggested replacements cannot provide equivalent operational lifetimes which therefore become obsolete faster than existing deployments.

Given the investment that has been made over many years, coupled with the fact may operational requirements have not changed, it makes sense to keep systems in place. By suppling spares, offering repair services and technical assistance, we are able to support these aims.

Systems Replacement and ‘Value Recovery’

Eventually, it does become necessary or desirable to undertake network refreshes. Often, we can help evaluate, source and implement suitable systems.

As discussed recently at the Engineering Design Show, we are able to utilise the capabilities of a network of local manufacturers to replicate and if necessary reverse-engineer components and products to meet exacting performance requirements.

When replacing existing networks, we are able to offer to Remove, Resell and/or Recycle existing equipment, generating revenue from the ‘Value Recovery’, and importantly ensure that items are disposed of in the most ethical and environmentally respectful way.

Equipment recently supplied and/or currently stocked

Certain product families continue to prove their excellent availability and reliability, and we are fortunate to continue to be able to provide stock of many of these items, either in new, surplus or refurbished condition.

Examples of such products follow; should there be anything specific you require, please do not hesitate to get in touch; we look forward to hearing from you!

Nokia ‘Dynanet’ PDH – Definitive Spares List

Keymile UMUX – Multiservice Access Solutions

Marconi XMP1 – telecommunications

Nokia, Marconi and Ericsson SDH – Synfonet, SMA and OMS

Sagem – ADR SDH family

RadiFlow – Cybersecurity Solutions for the Industrial IoT

TETRA – Equipment and Terminals for PMR Networks

Bosch – Professional CCTV Cameras

‘Dynanet’ PDH Telecom Spares

Continuing in Operation, Still Available for Supply

The ‘Dynanet’ product family is a range of PDH telecommunications products first launched by Nokia over 20 years ago. This equipment has proven to be incredibly reliable and dependable, extensively deployed by Operators, Utilities and Transport companies to provide resilient and highly available transmission networks.

A continuing challenge for public and private network owners is the ongoing maintenance of infrastructure systems to support their business needs. In many cases, it makes sense to continue to operate legacy systems which are still fulfilling unchanged requirements, rather than contemplate costly and time-consuming change-outs and replacements.

Keeping Customers Operational

@YellowsBestLtd seeks out new products and legacy equipment spares to assist with these aims. Recent enquiries have been fulfilled supplying refurbished and surplus stocks of equipment cards, as well as built-to-order cables and connectors to suit exact requirements.

There follows a few examples of items we have recently supplied. Also, our more extensive Definitive ‘Dynanet’ spares list here provides details of many items still available from surplus and refurbished stock. We would welcome any enquiries for the supply of similar or alternative parts, or support services to provide hardware repairs. Please get in touch; we look forward to hearing from you!

Example items, recently supplied

Multiplexers
Part Number	Product Code	Description
CC 24002	DB2 B2	DB2 2×2 Mb/s Branching Unit (B2), 75ohm

CC 24002 – DB2 B2

Multiplexers
Part Number	Product Code	Description
CC 24011	DB2 X2	DB2 2 Mb/s Switching Unit (X2), 75ohm

CC 24011 – DB2 X2

Multiplexers
Part Number	Product Code	Description
TC21101	DM2	DM2 Multiplexing Unit, 75 ohm

Mechanics
Part Number	Product Code	Description
T37870.01	SUBRACK	NDM 19in 17-slot Subrack

T37870.01 – Subrack

Power Supplies
Part Number	Product Code	Description
T37882.02	NDUe	NDM DC Unit (NDUe)

T37882.02 0 – NDUe

Voice Interfaces
Part Number	Product Code	Description
TU21236.10	VF E&M	CU 8ch E&M/uP: 1xUKe&m/VF

TU 21236.10 – VF E&M

Optical Line
Part Number	Product Code	Description
TA 21513	DF 2-8	Term. Repeater 2-8 M, 1300 nm LED MM/SM

TA 21513 – DF 2-8

Copper Line
Part Number	Product Code	Description
T65570.01	ACL2i	ACL2i DC GEN

T65570.01 – ACL2i

Management
Part Number	Product Code	Description
T31094.01	DCN	DCN Adapter C4.0

T31094.01 – DCN

TETRA Equipment and Terminals for PMR Networks

Public Safety, Utility and Transport organisations over many years have deployed Private Mobile Radio (PMR) infrastructure equipment with high availability and reliability to provide to provide dedicated, secure communications networks.

Modern implementations of PMR utilise the digital TETRA standard, which provides interoperability between systems and terminals from a range of manufacturers.

@YellowsBestLtd our mission is “Keeping Customers Operational”, by continuing to provided spares solutions, hardware repairs and support services to ensure continued long-term operations and maintenance.

Examples of the products we have recently been requested to provide spares solutions and repairs services include Motorola Desk Radio Terminals:

Terminal Products
Part Number	Product Code	Description
M47PCC6T25_N	MT912	MTM700 380-430 MHz DESK Terminal
M80PCC6TZ5_N	MT912M	MTM800 380-430 MHz DESK Terminal
FIRMWARE	CLEAR / TEA1 / TEA2	Choice for all radios
OPTION	EXP DASH	Expand Control Head, 5m cable

If you have similar or other Radio solutions requirements and legacy maintenance services needs, please get in touch to discuss how we may be of assistance.

Cable products

Cable solutions to fulfil bespoke requirements

Customers with deployed infrastructure networks require not only spares, repairs and support, but also cable products to ensure continued long-term operations and maintenance.

@YellowsBestLtd is pleased to continue to provide bespoke solutions to meet exact requirements. These items are newly manufactured, specifically made to order.

Examples include cables for Nokia ‘Dynanet’ VF E&M interfaces and Bus Wire:

Cable Products
Part Number	Product Code	Description
006-220	21236.10 Cable	21236.10 3mtr 20pr foil/braid LSZH Cable P1 & P2

Part Number	Product Code	Description
580-512	Bus Wire	30AWG Solid core unshielded silver cable 8 pair – 50m

“Keeping Customers Operational”

If you have similar or other new cabling requirements, requirements for legacy infrastructure spares, repairs and maintenance support, please get in touch to discuss how we may be of assistance.

Professional CCTV Cameras

Many business operations depend on the security delivered by professional standard CCTV cameras, offering reliability, availability and a wide range of advanced features for mission-critical surveillance applications. One manufacturer that provides an extensive range of such products is Bosch; one of their latest models we feature here.

Bosch MIC IP Starlight 7100i Outdoor PTZ

This example of a robust PTZ IP camera is suitable for deployment in extreme outdoor locations that require reliable 24-hour security monitoring. It features a range of advanced imaging technologies as well as Bosch’s Intelligent Video Analytics.

Featuring a 1/2″ 2MP CMOS sensor and a 6.6-198mm motorized zoom lens, the camera captures video at resolutions up to 1920 x 1080 at 60 fps in a 58.3 to 2.1° field of view. The camera delivers color video in lighting conditions as low as 0.0047 lux and uses an automatic IR cut filter to switch from color to B&W for day/night functionality.

An integrated high-speed pan/tilt system with an anti-backlash drivetrain provides 360° continuous panning and 290° tilting at up to 120° and 90° per second, respectively. Housed in an IP68- and IK10-rated enclosure and equipped with a window defroster, the camera is suitable for use in vandal-prone outdoor locations. Audio input and output ports allow for two-way talk while an SD card slot enables onboard storage of footage. ONVIF compliance ensures compatibility with a wide range of surveillance devices.

Solutions for New and Legacy Product Sources and Supply

@YellowsBestLtd seeks out new products and legacy equipment spares to assist with our aim of “Keeping Customers Operational“. Recent enquiries have included not only CCTV cameras, but also the supplying refurbished and surplus stocks of equipment cards, as well as built-to-order cables and connectors to suit exact requirements. Please get in touch to discuss any solutions or services requirements that you have; we look forward to hearing from you!

New parts for Legacy systems

Keeping Customers Operational

There follows a few examples of items we have recently supplied. We would welcome any enquiries for the supply of similar or alternative parts, or support services to provide hardware repairs. Please get in touch; we look forward to hearing from you!

Example items, recently supplied

Connectors
Part Number	Product Code	Description
D-21470	Euro	Euro Connector 3×7

Cables
Part Number	Product Code	Description
102-722-1	Coax-SMB 1m	BT3002 Coax Cable BNC Plug to SMB Right Angle, 1m
102-722-3	Coax-SMB 3m	BT3002 Coax Cable BNC Plug to SMB Right Angle, 3m
102-722-5	Coax-SMB 5m	BT3002 Coax Cable BNC Plug to SMB Right Angle, 5m

Equipment
Part Number	Product Code	Description
T37882.02	NDUe	NDM DC Unit
TA 21513	DF 2-8	Term. Repeater 2-8 M, 1300nm LED MM/SM
TU 21236.10	VF E&M	CU 8ch E&M/uP: 1xUKe&m/VF
TU 21216	SUB/EXCH	Channel Unit SUB/EXCH

More equipment spares are listed here

Cabling Solutions

Bespoke cable products to suit individual needs

@YellowsBestLtd seeks out new products and legacy equipment spares, ensuring the continued long-term maintenance of infrastructure system.

Equally as important can be the necessary cables to connect data and voice circuits. Often, these are items that can be damaged and disposed of, since repair is difficult or impossible. And original supply is no longer available. Fortunately, we are able to get these bespoke items newly manufactured, specifically made to order.

Here are a few recent examples:

Cable Products
Part Number	Product Code	Description
102-722-1	Coax-SMB 1m	BT3002 Coax Cable BNC Plug to SMB Right Angle, 1m

Coax-SMB-1m

Part Number	Product Code	Description
102-722-3	Coax-SMB 3m	BT3002 Coax Cable BNC Plug to SMB Right Angle, 3m

Coax-SMB-3m

Part Number	Product Code	Description
102-722-5	Coax-SMB 5m	BT3002 Coax Cable BNC Plug to SMB Right Angle, 5m

Coax-SMB-5m

“Keeping Customers Operational”

If you have similar or other new cabling requirements and legacy maintenance needs, please get in touch to discuss how we may be of assistance.

Searching for NMS cables

Call out for any requirements for Network Management Systems cables

In addition to satisfying world-wide customer product sourcing requirements for current and ‘legacy’ equipment technologies, @YellowsBestLtd also seeks out peripheral items such as Network Management System (NMS) cables.

These items may be minor in nature and originally low-cost, but they are vital for continued use and configuration of transmission nodes via management systems which evolved way before modern wireless technologies and smart phone ‘app’ based tools. Such specialist cables are becoming increasingly hard to find, since once used and damaged, they are likely to be disposed of rather than refurbished, and no new replacements are being produced.

However, in the absence of surplus stocks, it is possible for us to arrange for the manufacture of specialist cabling products including those for NMS. Due to the particular nature of the connectors utilised, these have to be specially sourced, but the cable materials themselves can be specified and applied accordingly. However, it is the orginal design information that is most critical to obtain the right functionality and compatibility.

Whatever your requirements, if you are seeking equipment or cabling for new or legacy systems, then please let us know as we can usually assist. We look forward to hearing from you.

Searching for Keymile DUP14

Call out for any stocks of Keymile’s Dual Power Input Modules (DUPI4)

@YellowsBestLtd we satisfy world-wide customer product sourcing requirements for current and ‘legacy’ equipment technologies from a wide range of Original Equipment Manufacturers (O.E.M.s).

In particular, we have stocks of surplus and refurbished products from the Keymile UMUX range which we are able to supply to assist customers in maintaining their operational networks.

However, one item not in our stocks that is of immediate interest to several of our clients is the Dual Power Input Modules (DUPI4).

We are urgently seeking supply; if you can assist, please get in touch!

These items provide the ultimate power protection upgrade:

Unit centralises alarm functionality and power input control
Delivers built-in redundancy
Power protection for both sub rack and fan unit
Increased the VDC availability

The DUPI4 acts as a dual input power decoupler that selects between two independent VDC power feeds and delivers them directly to the sub rack’s power input. Thus, the DUPI4 ensures uninterrupted service delivery since the power feed change over is instantaneous.

‘Legacy’ telecoms history

The UMUX SDH product portfolio was originally launched 1991 by Ascom, which subsequently became Keymile. Keymile was sold to ABB in 2017 when the UMUX range was discontinued, and then was acquired in 2019 by DZS.

Comprehensive Functionality

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.

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.

Spares for 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.

The definitive ‘Dynanet’ spares list

Nokia ‘Dynanet’ PDH Transmission products

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).

In particular, we are able to supply products from the ‘Dynanet’ range, given that we have a significant amount of refurbished and surplus equipment items in stock for immediate delivery. Hence there continues to be spares support for current and even increased deployed networks.

Comprehensive Stocklist of ‘Dynanet’ Spares

Whereas the ‘Dynanet’ family contained a wide range of products produced and supplied over many years, some of which are relatively obscure and unlikely to be needed, there are a number of core items that have proved to be always in demand by Customers. Consequently, we have endeavoured to create a comprehensive stock list, containing part numbers, product codes and descriptions and images which is presented here, and would welcome any enquiries you have for spares requirements that we can fulfil. If however, you are seeking something more unusual, then please let us know as we can usually assist. We look forward to hearing from you.

Mechanics
Part Number	Product Code	Description
T37870.01	NDM	NDM 19in 17-slot Subrack

Part Number	Product Code	Description
T37871.01	NDM	NDM DN2 19in 17-Slot Subrack

Power
Part Number	Product Code	Description
T37882.01	NDU	NDM DC Unit

Part Number	Product Code	Description
T37882.02	NDUe	NDM DC Unit

Part Number	Product Code	Description
T37889.01	NBU	NDM Backup Unit

Multiplexers
Part Number	Product Code	Description
TC 21101	DM2	DM2 Multiplexing Unit, 75ohm

Part Number	Product Code	Description
CC 24002	DB2	Branching Unit, B2, 2x2Mb/s, 75ohm

Part Number	Product Code	Description
CC 24011	DB2	Switching Unit, X2, 2Mb/s, 75ohm

Part Number	Product Code	Description
CU 24111	DN2	Control Unit, DN2, 75ohm
CC 24101	DN2	Interface Unit, IU2, 2x2Mb/s, 75ohm

Optical Line Units
Part Number	Product Code	Description
TA 21513	DF2-8	Terminal Repeater 2-8M, 1300nm, LED MM/SM
TA 21516	DF2-8	Terminal Repeater 2-8M, 1300nm, LASER SM
TA 21518	DF2-8	Terminal Repeater 2-8M, 1300nm, LASER LP

Copper Line Units
Part Number	Product Code	Description
T65580	ACL2i	ACL2i PF Gen

VF and Sub
Part Number	Product Code	Description
CU 21206	SUB/SUB	Channel Unit SUB/SUB

Part Number	Product Code	Description
CU 21206.50	SUB/SUB	Channel Unit RSM (L/E Start) 6ch

Part Number	Product Code	Description
CU 21216	SUB/EXCH	Channel Unit SUB/EXCH

Part Number	Product Code	Description
TU 21236.10	VF E&M	Channel Unit 8ch E&M/uP: 1xUKe&m/vf

Data Interface Units
Part Number	Product Code	Description
TU 21125	DIU X.21	Data IF Unit 48..64k with sync, X.21

Part Number	Product Code	Description
TU 24013	DIU nx64k	Data IF Unit 2M, nx64k: G.703/704, 75ohm

Ethernet & ISDN
Part Number	Product Code	Description
TU 21133.03	ETHERNET	Ethernet IF 10/100 2ch, 3+3 if, switch

Supervisory
Part Number	Product Code	Description
TC 21705	SUPY SUB	Supervisory Substation

Special Units
Part Number	Product Code	Description
T37885.01	RING GEN	Ring Generator
T37885.02	RING GEN	Ring Generator + DC/DC converter

Optical Teleprotection
Part Number	Product Code	Description
D-24204	TPSO C37.94	Optical Teleprotection Interface, C37.94

Q1 Management
Part Number	Product Code	Description
T31094.01	DCNA	DCN Adapter C4.0

Connectors
Part Number	Product Code	Description
D-21470	Euro	Euro Connector 3×7