Ready for Making Tax Digital?

Keeping digital records from 1st April 2022

From the beginning of April 2020, all UK VAT-registered businesses will need to keep digital records of all transactions, and then submit VAT returns electronic using compatible software.

Whereas many businesses have already started using Making Tax Digital (MTD), the new deadline means that all businesses of any size that are VAT registered will need to comply.

Signing Up to MTD by the next VAT period due

The new electronic service replaces the ‘manual’ VAT return for businesses on their next submission after the 1st April start date, which remains at the same quarterly interval. So (for example) if the business’s current VAT period is February to April, then this can be completed in the usual way when due in May. But the following VAT period of May to July will require a digital submission in August (and thereafter). Signing up to MTD needs to be made at least 7 days before the date the first MTD return is due. It’s important however not to sign up less than 5 days after the last non-MTD return, to avoid duplication of payments. 

Signing up is accomplished via the MTD GOV.UK website, requiring a Government Gateway ID with business and VAT registration information.

Obtaining and using compatible software

Various providers of accounting software are available to both record digital transactions and make the electronic VAT submissions. This also includes using spreadsheets, though in that case bridging software will be needed to make the submission. 

A top tip for NatWest Bank business customers is that they will provide the MTB compliant accounting software FreeAgent at no cost.

Assisting with your business requirements

@YellowsBestLtd  would be interested to receive feedback on your transition to MTD and any other business transformation challenges you are facing. If appropriate, there may be areas of your business development or operations that we can support with consultancy services e.g. sales and marketing assistance. Please get in touch to discuss how we can be of help.

We look forward to hearing from you! 

Repairs

Maintenance of new and legacy systems

In order to accomplish our mission of “Keeping Customers Operational”, we often assist with the repair of parts for infrastructure systems, which are typically established, long-standing and therefore proven and fit-for-purpose. It makes sense to maintain and extend the life of these systems, as wholesale replacements will be costly and disruptive. This is particularly applicable when the service requirements have not changed, so functionality upgrades are not necessary.

Often, new product spares are expensive, difficult to source with long lead times, or no longer manufactured due to the product range having been discontinued and/or the original vendor having ceased business. In such circumstances, it becomes even more important to restore existing parts to working condition, tested and warrantied.

Available hardware services vary depending on the wide range of deployed technologies, and sometimes repairs are not possible due to component shortages or poor condition of the parts (e.g. suffering from water damage). But often both ‘legacy’ and newer items can be refurbished. Rebuild and recovery of software configurations can also be required and performed.

@Yellowsbestltd would be keen to hear from you should you have any repairs requirements. We would welcome receiving any defective items you have in order to perform a no-cost assessment to establish the feasibility and likely cost of restoration. Please get in touch to let us know how we can help.

By example, there follows a list of a few recent requests we have been able to assist with. We look forward to hearing from you with any feedback you may have.

Recent repairs requests

BERMotherboard
Motherboards
LED Displayboards
PSU & Control Units
Professional CCTV cameras
Consumer Electronics
Legacy workstations
Personal Computers
Computer Software

Operational Technology (OT) vs Information Technology (IT)

OT and IT: What’s the Difference?

Information Technology (IT)

Information Technology (IT) is a familiar concept to most modern office workplaces encompassing the products and networks providing data-centric computing, supporting various business functions such as finance, personnel, management and administration. This has grown to being fundamental to corporations large and small, and continues to rapidly develop in scale and capability.

Operational Technology (OT)

By contrast, Operational Technology (OT) is understood by utilities, transport, manufacturing and other industrial sectors, as encompassing an array of systems engineering, event monitoring and process control to facilitate operations. Historically, the technologies and products used to implement the required infrastructure have been bespoke and separate from other corporate systems.

The growth of standardisation

With the explosion of computing devices, the internet and communications generally, the underlying IT hardware and software have become ubiquitous and standardised. The majority of businesses now deploy products and networks which are interchangeable with most other global corporations, bringing overall costs down, increasing ease-of-use and enabling global inter-operations.

In recent years, there has been a trend to capitalise on these developments by seeking to replace old OT bespoke systems with widely available and deployed IT products.   

The problem with convergence

Despite the advantages brought by a move to using IT technologies to fulfil Operational infrastructure needs, there are some draw-backs. 

Although no-one wants systems to fail, and high performance is often a key requirement, in traditional OT systems, there is an emphasis on availability, reliability and ‘mission-critical’ operations, dictating deterministic technologies which standard IT products are not designed to provide. The packet-oriented ‘best-efforts’ nature of TCP/IP networking solutions is not sufficient to provide the performance required. Some operational systems have specific timing requirements, utilising PDH and SDH TDM-based technologies to deliver signalling and tele-protection information. 

For years, ‘security’ against ‘remote attacks’ was not an issue, because most OT systems were regionally based and not connected to the wider world. And even those with remote monitoring and control tended to use bespoke equipment which was not widely understood or utilised by non-specialists. With a move to going ‘on-line’, and utilising ‘standard’ IT equipment to fulfil OT requirements, this is no longer necessarily the case. Which brings the possibility of outages due to system or denial of service attacks. ‘Cyber-security’ in recent years has needed to become part of the considerations for OT infrastructure, learning from the experiences of threats to IT systems and ‘denial-of-service’ attacks. 

And whilst modern IT communications bring gigabit data bandwidths, OT data needs have remained modest, often to fulfil the unchanged monitoring requirements for an enormous existing deployed network of slow-speed kilobit data devices, such as pumps, valves and actuators. 

In short, the needs and desires of businesses for computing devices, networking systems and global communications to provide ever-increasing bandwidth and application support continues to diverge from the requirements of industrial operations, requiring availability, compatibility and mission-critical performance.  

Future trends

Whilst vendors of networks, computing and communications continue to develop advanced technologies to meet the growing needs of IT for businesses, the desired ‘convergence’ to replace OT systems continues to be a work-in-progress.

OT systems tend to be built with longevity as a priority over cost of ownership, due to the challenges of replacement once in continuous operation. Whereas IT products are often ‘written down’ and replaced over a much shorter timescale, with a view to taking advantage of continuous developments to provide higher performance and productivity.

Consequently, technologies that are considered ‘legacy’ by IT professionals continue to be maintained and even further deployed as trusted and proven OT systems to fulfil operational needs. 

Your operational systems requirements

@YellowsBestLtd would like to know your infrastructure goals, deployment experiences and maintenance challenges and how we may assist you to fulfil your OT and IT requirements, for both new and existing operational systems. We look forward to understanding your needs for technical support, solutions sourcing, repair services and equipment spares.

Challenging times demand time for a change!

New “UK” launch

It’s been a challenging time for businesses generally, and particularly in the United Kingdom, with Brexit in many cases adding cost and time to trading, and Covid-19 restricting travel and networking.

So it seemed an appropriate time to launch a new varient of the Yellows Best Limited website, now additionally utilising “.co.uk” as a signifier of commitment to our home market location.  

Keeping Customers Operational

The new YellowsBest.co.uk promotes the same blend of Services and Solutions for “Keeping Customers Operational”, but presented in a different and modern single-page layout, making it particularly mobile device-friendly where ‘vertical scrolling’ is more appealing than using the traditional ‘horizontal tabbed’ layout.

We hope this provides Customers old and new with a welcome alternative, though the original YellowsBest.com will continue to be maintained, along with it’s associated blog for ‘informal’ views and news updates.

Assisting with your requirements

It would be interesting to receive feedback as to how useful you may find this additional site, and whether there is anything else you’d like to see featured.

Of course, @YellowsBestLtd online content ultimately serves the purpose of highlighting the types of services and solutions we can provide. Customers may therefore be prompted to get in touch to discuss their specific requirements, which we can usually assist with.

Rest assured, if you use either contact address:

enquiries@yellowsbest.co.uk

enquiries@yellowsbest.com

we’ll receive your message and will be in touch by return. We look forward to hearing from you! 

eTrike Conversion Project

More fun going electric

With the combination of moving to a more sustainable future along with a fitness drive encouraging people to be more active, one thing growing in popularity is the “eBike”, which supplements the efforts of the rider with a low speed assistance from an electric motor.

eBike

This means you don’t need to be young or super-fit to enjoy getting out and about, with good speeds and longer distances very achievable. And if you want a challenge, you can always switch the assistance off!

Ebikes come ready built to ride away, but an existing machine can be converted.

The three-wheeler challenge 

Given the benefits to two-wheeled cycling from going electric, a similar upgrade to an existing 3-wheeled recumbent trike was called for.

eTrikeOriginal
eTrike awaiting conversion

In principle, this is ‘simply’ a matter of adding an electric motor and a battery, which is indeed what was done, but there were a few challenges along the way.

Step 1: choosing the electric motor location

The first major decision to make when converting or purchasing any electric cycle is the location of the motor; there are three options: front-wheel, rear-wheel or bottom-bracket mount. For the Trike, with its two small forward wheels, front mounting is not possible. The rear option would require the replacement of the wheel with one with a hub motor, and anyway this can be considered an inferior location given that the motor drive is separate from the rider’s push of the pedals. 

Consequently, a bottom-bracket motor was selected, which confusingly on a recumbent trike is not a ‘centre mount’ because it is located at the front, ahead of the front wheel.

Step 2: Motor selection

There are now an expanding number of manufacturers of electric cycle motors, but some of these are only built into new bicycles, and others are prohibitively expensive kits. However, some very affordable Chinese products are available via AliExpress. The selection of the Tongsheng 36V 250W Tsdz2 model from pswpower was made.

TSDZ2
Tongsheng Tsdz2

Given the restriction in the UK of a maximum speed of 15.5 mph for powered assistance and limit of 250W, this unit is perfectly adequate for the intended task.

Step 3: Bottom Bracket ‘special’ fit

The ‘Bottom Bracket’ is the place on all cycles which enables the pedals to rotate, with bearings facilitating the movements of cranks. However, there are many ‘standards’ of different manufacturers models, so getting a motor to fit in place is not necessarily straight-forward. The existing Trike had what is known as an Ashtabula or ‘American’ one-piece crank’ (OPC) Bottom Bracket, whereby the cranks for the pedals on each side are formed from a single unit and uses a 51.3mm bearing cup pressed into the frame.

OnePeiceCrank
American style one-piece-crank


CrankRemoval
Removal of the cranks

Unscrewing the crank retaining nut was aided by use of a Park Tool HCW-18 spanner. One of the pedals was taken off, the bearings teased out, and the crank fed out. Then a brass drift punch bar helped to hammer out the mounting cups from each side.

The difficultly then came that the mounting shaft of the Tsdz2 motor is smaller than the bottom bracket diameter, and is also offset. Fortunately, there is a perfect conversion solution to this problem already available, called the Eccentric BB adapter. This converts the Ashtabula empty shell to standard BSA size 34mm diameter (68mm width), but also is asymmetrical mounting which perfectly accommodates the offset motor shaft. This though is somewhat tricky to source; eventually located at Luna Cycle in CA, USA.

eccentricBBadapter
Eccentric BB American to BSA adapter

Fitting the adapter required careful insertion either side, being a close fit and needing gentle assistance with a mallet, also ensuring that the rotation of two halves lined up.

BBadapter
Eccentric Adapter in place

But once fitted, the motor was slid in and the offset mounting ensured that the shaft located without difficulty or fouling of the frame. The retaining bracket was fitted to the motor and secured with two M5x16 bolts, and then the M33 retaining nut was screwed into place and tightened using the special ring spanner tool supplied with the motor.

MotorInPlace
Securing the Motor

The fixing block was then attached with an M8x40 bolt, and the motor assembly secured in place using the bridge-plate, needed to prevent the possibility of the motor rotating in the crank when being powered in operation.

Step 3: Cranks and pedals

The cranks then fitted to the motor spindles either side. The supplied 170mm long parts were too long for the recumbent machine, being designed for a standard bicycle, and hence a pair of 152mm cranks were sourced, which matched the length of the original ones, which being an all-in-one unit couldn’t be reused. Neither could the pedals, which were a different screw size, and so standard gauge replacements were fitted.

CrankFitment
Fitting the Cranks

These feature a reverse thread for the left-hand side, which therefore was secured by anti-clockwise rotation, whilst the right hand naturally secures clockwise. 

Step 4: Battery fitment

Next came the addition of the 36V 13Ah Lithium-Ion power source. There are various types that can be used on standard bicycles, including down-tube or top-tube units, and bottle-type, but the recumbent trike doesn’t have space for any of these. Instead, it was necessary to add a rear carrier, mounting over the rear wheel, to house a rack mounting battery purchased through eBay from 167-tradeworld-uk. This wasn’t a completely straight-forward fit, as first the rear axle position had to be slightly centralised to accommodate the brackets, and then 16mm pipe clips were needed be added to the frame behind the seat for attaching the front stays to secure the rack. This ensured that the rack didn’t slide or rotate forwards or backwards in use with the weight of the battery.

Rear Rack and Battery

With the rack secured, the purpose-built battery housing was screwed in place on the lower row of the carrier. Then the battery was slid into place and secured with its key lock. Charging of the battery can be made in situ, though it can also be removed for this purpose. This was fully charged using the dedicated mains / 36V power supply adapter.

Step 5: Display mounting

An important part of the electric conversion system is the incorporation of a display, which connects the power and controls the cycling assistance, whilst also providing useful data such as speed, distance and charge remaining.

VLCD5 Display

For this project, a VLCD5 display was chosen, ideal for the purpose. Due the limited room and mounting options, given that there are no high up handlebars or top tube on the recumbent trike, the display was mounted centrally on the low steering crossbar. This was secured via the two horizontal attachment loops, thus in use being positioned between the rider’s legs.

Optional remote button control

The optional remote button control was additionally located on the left handle grip, though this was subsequently found to be of no practical use in operation.  

Step 6: Wiring up

With all the main components in place, all that was left was to make the various wiring connections, starting with linking the battery to the motor. The battery came with an XT-60 socket, whereas the motor has 4mm bullet connectors. Also, due to the forward mounting location of the motor, a cable of approximately 1m was needed to link the parts, converting the connection types in the process. 

Next, the speed sensor was fitted to the left-hand rear wheel stay and accompanying magnet to the spokes, by means of cable ties. This is the means by which the control unit calculates and therefore displays the speed and distance travelled.

Speed Sensor and Wheel Magnet

The attached cable contains a splitter which is used to connect to both the display unit and also optional front and rear lights. Chosen for this purpose was an AXA Echo 15 switch for the front, and a Lynx rack mounting e-bike red LED for the rear, both of which fortunately accepted the 2.8mm mini spade connectors on the wiring harness.

Front and Rear lights

This combination cable was again too short to link the display with the sensor, so an additional 1m speed sensor extension N58B cable was added, this having the required 6-pin male/female connectors to plug into the splitter cable and the corresponding motor connection.

Step 7: Powering up and Configuring

The final step was to switch on the battery using the key and control panel with a press of the power button, and then set about configuring the system parameters.

Display switched on

The wheel size was set to 20 inches, and the distance measurement to miles. The i-button on the display module cycles the modes from ODO (total distance), TRIP, AVG (speed) and TIME. The +/- buttons increase/decrease the selected assistance level from ECO (minimum), TOUR, SPEED to TURBO (maximum).

The front and rear lights can be switched on and off with a short press of the power button. The rear battery light can be additionally manually switched on.

A long press of the power button switches the display off.

Finishing up and testing 

To finalise the build, some cable sheaths were added to tidy up the wiring, and cable ties secured all the leads. The original flag (useful for visibility for such a low-down vehicle) was cable tied in position against the rear rack.

eTrike complete with Flag

The eTrike frame was adjusted for the right seating position. Now was time for a test ride! 

Completed eTrike project

The completed machine performed perfectly well, providing, as most electric cycles do, assistance from a stationary start up to the legal maximum of 15.5 mph. Pedalling effort is still required by the rider, but the effect is to ‘flatten’ hills (and reducing the need for gear changes), making the experience less strenuous and more enjoyable, maintaining a greater average speed and achieving longer ride distances.  

In conclusion, the eTrike conversion was relatively straight-forward, once all the necessary component parts had been identified and sourced. Since recumbent trikes are a somewhat specialised form of cycle, and tend not to be alike, then it is to be expected that a degree of customisation is required to achieve the build of a suitable electric conversion.  

Your transformation projects

@YellowsBestLtd assists customers in developing their business and improving and maintaining their infrastructure. Should you have any requirements or plans, please get in touch to discuss how we may be of assistance. 

Mobile Evolution and the Extinction Event

When Giants ruled … mobile communications

A long time ago, great “Dinosaur beasts” of Mobile Communications were supreme.  The beginnings were in the 1970’s with the launch of a Motorola handset weighing 2kg. This was followed by other barely portable products with huge batteries such as the Nokia Talkman. Only for the ‘new adopters’ who had to be in touch all the time.

Then came the ‘Bricks’ 

From these humble beginnings, soon a range of solid, reliable but ‘bricklike’ big and heavy phones appeared, like the Nokia 2110 and the Motorola Dynatac 8000X, as featured in the 1987 movie “Wall Street”. Designed for upwardly mobile business people.

Diverse expansion 

Then came a period of rapid expansion with a diverse range of more affordable products to suit wide consumer tastes. Various forms, colours and accessories became more and more important, with slide phones like the Nokia 8110 as featured in the 1999 film “The Matrix” and flip phones like the Motorola Razr, providing a ‘Star Trek’ appeal.

Feature explosion

An expansion of more and more features to make mobiles do more fuelled the explosion of product ranges. Cameras and music players were added to increase the functionality of these increasingly sophisticated and compact pocket-sized devices, such as the Nokia 6230.

6230
Nokia 6230

A glance at the 2004 Carphone Warehouse catalogue shows how varied mobiles had become, with the top 10 dominated by Nokia, Sony-Ericsson, Siemens and Motorola as the biggest manufacturers of the time.

2004 Carphone Warehouse “Top 10”

‘Tyrannosaurus’ functionality heavyweights 

For a while, the king of the land was the bulky, terrifyingly expensive but impressive (for its time) Nokia Communicator, offering phone, text, email and even fax. Opening up to reveal a full QWERTY keyboard, the range started with the 9000 which appeared in the 1997 film “The Saint” and had evolved by 2007 into the even more powerful E90.  

LegacySmartPhone
Nokia E90 Communicator

Extinction Event: The Death of the incumbents

But then came biggest shock to the world of mobile communications: the launch of the first Apple iPhone on 9th January 2007.

Like a meteorite striking the earth, this shock spelt the end for many mobile types which couldn’t compete with the sudden demand for ‘touch-screen’ devices using apps.

Indeed companies like Nokia, once the biggest of them all, couldn’t adapt and died a death, as well documented in the BBC documentary “The Rise and Fall of Nokia

Survival of the fittest

The ‘smartphones’ from Apple and later Android-based from the likes of Samsung became an increasing hit, wiping out much diversity and seeing a seismic shift away from many form factors to the now standard “slate” style of device.

Apple iPhone 4
Apple iPhone 4

Some ‘featurephones’ as they came to be known have lingered on, and in recent years companies like HMD global, who under licence have taken some iconic Nokia designs such as the 3310 and made a successful relaunch. Diversity is now finally creeping back with new variants such as the ‘folding’ Samsung Galaxy Z Fold2.

Your Paradigm shifts

Any memories or stories to tell? @YellowsBestLtd would be keen to hear your thoughts and experiences of sudden technology ‘paradigm shifts’. Let us know if we can be of any assistance with your future solution or services requirements. 

Lessons from the ‘Lockdowns’ for Business

Seeking the ‘new normal’

Most workplaces have seen some considerable disruption over the last year due to the restrictions necessary to deal with the global Covid-19 virus pandemic. Hopefully things are going to get easier over the coming months. But before we race to ‘get back to normal’ (if that’s indeed possible), let’s consider some unexpected benefits we might want to hang onto.

Work is what you do, not where you do it

Commuting has always been a drag. The time wasted driving, not to mention the cost, in order to reach an office in which documents are written, emails are read and replied to, and phones calls are made. Or instead, various ‘productivity’ applications are used. All of which could be done from home. What is needed is a ‘mind-shift’ to recognise that “I’m off to work” can mean engaging in an activity rather than physically travelling somewhere. 

What’s the point of an office?

The broad acceptance that an office is where ‘work happens’ is due to the familiarly of their existence over a number of years. Once upon a time there were good reasons why work had to be so: people needed the facilities they provided, including main-frame computers, desk telephones, fax machines, printers, typing-pools (yes, really – people once didn’t type their own documents!) And memos – remember those ‘internal mail’ envelopes? But now, with laptops and mobile phones and broadband internet, it’s no longer critical to all share the same space.

People ‘like’ keeping in touch

The reality of the office is that it’s no longer a critically functional resource hub, but there are some social benefits over working remotely. It’s a place to meet and greet, share ideas and stories, help each other and generally contribute to high morale. People enjoy discussing last night’s TV or the football. Lasting bonds and relationships are formed, sometimes even being introduced to future partners. Not sure all employers would see this to be their ‘role’; the social side can of course be achieved in other ways. Anyway, flexible remote working offers the opportunity for better work-life balance.

Meanwhile, bosses like collecting their workers in one place as then it’s easier to ‘manage by walking about’. There’s a trust element: how can the staff be really hard at work if they’re not visible, aka ‘chained to the desk’. But following McGregors’s ‘Theory X (authoritarian) and Theory Y’ (participative) style of management, you either micromanage them because they’re not motivated, or trust people to take pride in their work and get the job done. So forcing people into an office isn’t the answer to productivity. Rather, pick the right people, train and support them, give them ownership of their tasks. Let them work where and when they need to. Use performance reviews as a tool (not a chore) to keep on track and set rewarding goals.   

Quantity or Quality

The crazy thing about the 9-5 office culture is people vary between not having enough time to get a job done, and piloting a desk ‘looking busy’, because they’re supposed to be ‘in’. Flexible working on the other hand recognises that people have lives with things that need scheduling from time to time, around varying business demands and commitments. Allowing people the discretion to manage their work-life balance means better motivated and focussed staff who will put the extra effort in when needed. Or else, managers need to take strong decisions on appropriate resources and team composition. Working ‘smarter not harder’ certainly doesn’t mean forcing everyone into an office and making them work all hours.

Meetings expand to fill the time available

It seems like ‘work’ to spend hours in meetings showing each other an endless supply of presentation slides. Discussions often arise involving only a few participants while others wait passively. The reality is very little is accomplished that couldn’t have been better reviewed remotely, in one-to-one conversations or communicated more broadly via team or company-wide bulletins.

Keep your germs to yourself!

Due to the emphasis on ‘attendance’ (perhaps ingrained in people from their school years), there’s often a culture of ‘bravely struggling in’ when ill with a cold, thus almost guaranteeing the sharing amongst all colleagues. Above all else, the pandemic has shown the sense in keeping people separated to reduce the spread of illness. 

Better for you, better for the environment

Not everyone can work from home, and certain tasks can’t be done remotely. But it’s time for a re-evaluation of what journeys are ‘necessary’ and what are the most productive work patterns, both in terms of getting the job done (without sitting in traffic jams for hours) and maintaining a flexible, motivated workforce. Not least because of the unsustainable effect on our planet’s finite resources and impact of climate change due to limitless business activities and excessive travel.

Are you ready for the ‘paradigm shift’?

@YellowsBestLtd we’d be interested to hear your thoughts and feelings about the changes brought about by Covid-19, and how you see habits changing for the future. Will you be rushing back to the office, or reaping new flexibility from remote working? Please get in touch, and let us know how we can help with your continuing business requirements. We look forward to hearing from you.

New Year, New Stock! ‘Dynanet’ Spares

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).

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 NumberDescription
CC 24002DB2 2×2 Mb/s Branching Unit (B2), 75ohm
B2
DB2 B2 – CC 24002
Part NumberDescription
CC 24011DB2 2 Mb/s Switching Unit (X2), 75ohm
X2
DB2 X2 – CC 24011
Part NumberDescription
CC 24101DN2 2×2 Mb/s Interface Unit (IU2), 75ohm
IU2
DN2 IU2 – CC 24101
Part NumberDescription
CC 24111DN2 Control Unit (CU), 75 ohm
CG 24170DN2 Bus Power Unit (BPU)
CG 24171DN2 Extended Bus Power Unit (EBPU)
CU 24013Data Interface Unit (DIU) 2M, nx64k: G.703/704, 75ohm
nx64k
DIU nx64k – CU 24013
Part NumberDescription
D-21470Euro Connector, 3×7
3x7
Connector 3×7 – D-21470
Part NumberDescription
D-24204Optical Teleprotection Interface Unit, C37.94
C37.94
C37.94 – D-21470
Part NumberDescription
T31094.01DCN Adapter C4.0
DCNA
DCN Adapter C4.0 – T31094.01
Part NumberDescription
T37870.01NDM 19in 17-slot Subrack
Subrack
19in Subrack – T37870.01
Part NumberDescription
T37871.01NDM DN2 19in 17-Slot Subrack
T37882.02NDM DC Unit (NDUe)
NDUe
NDUe – T37882.02
Part NumberDescription
T37885.01NDM Ring Generator
Ring Generator – T37885.01
Part NumberDescription
T37885.02NDM Ring Generator + DC/DC converter
Ring Generator – T37885.02
Part NumberDescription
T37889.01NDM Backup Unit (NBU)
NDM Backup Unit – T37889.01
Part NumberDescription
T65580.01ACL2i PF GEN Line Terminal Card
ACL2i PF GEN – T65580
Part NumberDescription
TA 21513Optical Line Terminal Repeater (DF2-8), 1300 nm LED MM/SM
TA 21516Optical Line Terminal Repeater (DF2-8), 1300 nm LASER SM
TA 21518Optical Line Terminal Repeater (DF2-8), 1300 nm LASER LP
DF2-8 – TA 21518
Part NumberDescription
TC 21101DM2 Multiplexing Unit, 75ohm
DM2
DM2 – TC 21101
Part NumberDescription
TC 21301DM8 Multiplex Equipment, 75ohm
TC 21705Supervisory Substation
TC 21710.01TMS Adapter
TU 21122.5Data Interface Unit (DIU) 48..64k, V.11, 10ch
TU 21124Data Interface Unit (DIU) nx64k, V.11/V.35/X.21, 2ch
TU 21124.05Data Interface Unit (DIU) nx64k, V.11/V.35/X.21, sync
TU 21125Data Interface Unit (DIU) 48..64k with sync, X.21
DIU X.21 – TU 21125
Part NumberDescription
TU 21205Channel Unit SUB/SUB
TU 21206Channel Unit SUB/SUB
Channel Unit Subscriber / Subscriber – TU 21206
Part NumberDescription
TU 21215Channel Unit SUB/EXCH
TU 21216Channel Unit SUB/EXCH
Channel Unit Subscriber / Exchange – TU 21216
Part NumberDescription
TU 21234.20Channel Unit E&M/VF-P, 10 ch, 20 E&M ch
TU 21236.10Channel Unit 8ch E&M/uP: 1xUKe&m/VF
VF E&M
VF E&M – TU 21236.10
Part NumberDescription
TU 21255.01Channel Switch, 4 port

Season’s Greetings

It has been an unexpectedly challenging year, unprecedented times indeed!

Unfortunately, it seems likely that we will face more difficulties ahead. The global pandemic still needs to be beaten, and the U.K. leaving the EU will result in unpredictable trading conditions.

Having just celebrated our fifth anniversary, YellowsBest looks forward to continue working with our partners and assisting Customers’ businesses through the uncertain times ahead.

We wish you all the best for a safe, seasonal celebration.

Celebrating our fifth anniversary!

Five years of successful trading! Thanks to all our Customers and Suppliers.

@YellowsBestLtd has been in business for five years.

5 years of trading
5 years of trading

Our aim continues to be “Keeping Customers Operational”; understanding requirements and fulfilling them by providing a range of management services and solutions, including:

  • consultancy, for business development, sales and marketing
  • technical support, onsite engineering or 24/7 NOC remote assistance
  • systems supply, including legacy IT servers / workstations
  • spares for infrastructure, such as telecoms and CCTV cameras
  • repairs at module and component level, e.g. LED displayboards, PSUs
  • value recovery through reverse logistics, resale and recycling

As we continue to move forward, we’d very much like to understand what other services and solutions we can 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.