Cable Testing & Certification Guide

Introduction – Prove it or Fix it

A flawless installation is only half the story; until every link has been tested and certified, your cabling asset remains a collection of untrusted conductors. In the age of 10 G copper, 400 G fibre and 90 W PoE++, the margin for guess-work is gone. Certification is how you demonstrate that each channel meets the performance class promised in the specification, qualifies for a 25-year warranty and will still pass when auditors turn up in five years’ time.

This article sets out the essential tools, procedures and pass/fail thresholds that guide ACCL’s own projects, whether we are pulling Cat 6A in a new office or splicing OS2 trunks across a campus. Links in green take you to deeper reading, such as our Structured Data Cabling service or our Fibre-Optic Testing Services page.

Standards and Performance Classes – The Rule Book

Copper (balanced pair)

ISO/IEC 11801-1 and BS EN 50173-1 define channel performance classes (D for Cat 5e, E for Cat 6, EA for Cat 6A, etc.).
Field testers must follow ISO/IEC 14763-4 for measurement accuracy (Level Va for Cat 6A, Level VI for Cat 8).

Fibre

Insertion-loss and length testing conform to ISO/IEC 14763-3 (Tier 1).
Fault-location and event characterisation use OTDR traces (Tier 2).
Connector end-face quality is graded against IEC 61300-3-35.

Project specifications often add manufacturer-specific limits that sit inside these frameworks; ACCL’s Excel and Leviton warranties, for instance, tighten copper NEXT by 0.3 dB for extra headroom.

0333 900 0101 sales@network-data-cabling.co.uk Contact us

      EXCELLENT  
   Based on 67 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Taj | Postremo IT 💻 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service from ACCL. Setup a wifi installation in central London, with no issues! Highly recommended, fast turn around time.
  
 
      Posted on Google  
   
   Andrew Matthews 
 
 
 
 Trustindex verifies that the original source of the review is Google. We commissioned a Wi-Fi survey and installation of new fibre and Cat6 cabling to support a new Wi-Fi installation from Accl in July and August of 2026. ACCL were superb from start to finish. We cannot fault the quality of the work and we received great advice on our project. Very satisfied customer!
  
 
      Posted on Google  
   
   Brigt Valland 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very professional company, good at understanding our need and efficient delivery of new building network- and WIFI infrastructure. An extra star for making it easy for me to "remote" organize this from Norway.
  
 
      Posted on Google  
   
   Siobhan Codd 
 
 
 
 Trustindex verifies that the original source of the review is Google. We used ACCL for a full WiFi and network install at our Old Street office and are very pleased with the result. They supplied and installed seven Ubiquiti WiFi access points, a UniFi Dream Machine, a 24 port Layer 3 Ubiquiti switch, and ran new Cat6A Leviton cabling with two ports to every AP. The whole job was neat, well planned and done to a very high standard. The coverage across the office is excellent and it looks pretty cool too! Would happily recommend them to anyone needing cabling or network infrastructure done properly.
  
 
      Posted on Google  
   
   Mark Cooper 
 
 
 
 Trustindex verifies that the original source of the review is Google. An excellent service from start to finish!
The ACCL team installed our new network cabling, the foundation in readiness for supplying and installing a new IP CCTV camera system, professionally and efficiently. They were punctual, knowledgeable, and took the time to ensure everything was installed neatly and working perfectly. Their attention to detail and customer service were outstanding. I very much appreciate the initial project management and upfront planning, which combined to secure a successful delivery. I would highly recommend them to anyone looking for reliable network cabling or CCTV installation. Thank you for a fantastic job.
  
 
      Posted on Google  
   
   Mohammed Alhashimi 
 
 
 
 Trustindex verifies that the original source of the review is Google. I would like to express my sincere appreciation to Wayne and his team for the excellent work they carried out. From start to finish, they were professional, reliable, efficient, and clearly took great pride in delivering a high standard of service.

They were professional, efficient, and paid great attention to detail, ensuring everything was neat, clearly labelled, well organised, and completed to a very high standard. The end result was clean, structured, and exactly what we needed.

Wayne and his team were reliable, courteous, and clearly committed to doing the job properly rather than simply getting it done. I would highly recommend them to anyone looking for professional cabling work and a team that genuinely takes pride in the quality of their finish.
  
 
      Posted on Google  
   
   Laurence Rutter 
 
 
 
 Trustindex verifies that the original source of the review is Google. So easy to deal with! Great price and great guys! Did exactly what they agreed, on time and in budget. Would thoroughly recommend them to anyone.
  
 
      Posted on Google  
   
   AlonMel Music 
 
 
 
 Trustindex verifies that the original source of the review is Google. Wayne and team did an excellent job tidying our office data cabinet over the weekend. Professional, clean work—they went above and beyond with cable management and even relocated the router. Communication was impeccable throughout. Highly recommend.
  
 
      Posted on Google  
   
   Amritpal Singh 
 
 
 
 Trustindex verifies that the original source of the review is Google. "Outstanding service from ACCL. They did an incredible job with our networking and data cabling. The setup is neat, professional, and works perfectly. Extremely knowledgeable and easy to work with. I’ll definitely be using them for all our future IT needs!"

Huge Shout to Wayne Connors and David Little for managing this.
  
 
      Posted on Google  
   
   Andy Dawson 
 
 
 
 Trustindex verifies that the original source of the review is Google. We've worked with Wayne, David and the ACCL team for a number of years on projects throughout London. One of very few suppliers that we never have to question their proposal on detail or price, everything is clear, transparent and fair. Projects are always completed on time and there are never any costly surprises which we had previously experienced from other suppliers. They all have a vast knowledge on anything fibre optic cabling, copper cabling or wifi. ACCL is now the only data cabling company in our phone book. Highly recommended.
  
 
  
  
 
     Verified by Trustindex  Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

Test Equipment – Choosing the Right Instrument

Medium	Typical tool	Key capability	ACCL example kit
Cat 5e–Cat 8 copper	Modular field analyser with interchangeable adapters	Level VI accuracy, alien-crosstalk measurement	Fluke DSX-8000
Multimode & single-mode fibre (Tier 1)	Light source & power meter or dual-wavelength OLTS	Bidirectional insertion loss, length	Viavi OLTS-85
Fibre (Tier 2)	Optical Time-Domain Reflectometer	Event reflectance, splice loss, fibre end-point	EXFO MaxTester 730C
Connector inspection	Digital microscope	IEC 61300-3-35 automated grading	Viavi FiberChek Probe
PoE validation	Ethernet/PoE load tester	90 W draw, LLDP detection	AEM TestPro 100

All ACCL testers undergo factory calibration at least once a year; the certificate number appears in the hand-over pack so your facilities team can trust every dB.

Copper Certification – Step by Step

Planning & setup
Import the cable schedule into the tester’s project file, assign unique IDs that match outlet labels and verify the correct limits (Class EA for Cat 6A, Class I for Cat 8).
Wire-map & length
The tester sends low-frequency tones to check pin-for-pin continuity, split pairs and DC loop-length. Length must stay under 90 m permanent link or 100 m channel.
Insertion loss & NEXT/FEXT
High-frequency sweeps capture attenuation and crosstalk across the full band (up to 500 MHz for Cat 6A, 2 000 MHz for Cat 8). Failures usually trace back to untwisted pairs at the jack or kinked cable runs.
Resistance and TCL/ELTCTL
Modern PoE++ projects require Conductor Resistance Unbalance and Transverse Conversion Loss checks to ensure common-mode noise stays below IEEE limits.
Alien crosstalk sampling
On high-density Cat 6A runs, ACCL tests every 1-in-10 links as both disturber and victim. If any fail, we widen the sample or remediate the bundle design.
Documentation
Results upload via Wi-Fi to the project cloud. PDF certificates and native .flw files go into the O&M manual for warranty.

Pass threshold – the tester issues PASS only if all parameters meet or exceed the selected standard; a red FAIL on any single metric voids the channel.

Fibre Certification – Tier 1 Essentials

Reference setting
Clean and verify launch leads, set a 0 dB reference in one direction, then repeat in the opposite direction to catch connector asymmetry.
Insertion-loss measurement
The optical loss test set (OLTS) logs loss at 850 nm / 1 300 nm for multimode or 1 310 nm / 1 550 nm for single-mode. Each result is compared with the design budget:

Budget = (number of connectors × 0.35 dB) + (number of splices × 0.1 dB) + (attenuation coefficient × length).

A 100 m OM4 link with four connectors and no splices therefore allows about 1.4 dB.
Length verification
The OLTS time-of-flight reading must sit within the design; riser variations often add 5–8 % over “as-the-crow-flies” CAD lengths.
End-face inspection
Each connector is graded A–D for contamination and scratches. ACCL requires Grade B or better before insertion into active gear.

Any link that fails Tier 1 goes back for re-cleaning, re-splice or re-termination before moving to Tier 2.

Fibre Tier 2 – OTDR Forensics

OTDR traces pinpoint where loss occurs – a splice at 37 m, a tight bend at 58 m, a poorly polished pigtail at 98 m. ACCL uses automated event-table analysis, then a human engineer reviews reflectance spikes and classifies them as “within spec”, “monitor” or “repair”. We store .sor files alongside PDFs so future moves, adds and changes can overlay new traces for comparison.

0333 900 0101 sales@network-data-cabling.co.uk Contact us

      EXCELLENT  
   Based on 67 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Taj | Postremo IT 💻 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service from ACCL. Setup a wifi installation in central London, with no issues! Highly recommended, fast turn around time.
  
 
      Posted on Google  
   
   Andrew Matthews 
 
 
 
 Trustindex verifies that the original source of the review is Google. We commissioned a Wi-Fi survey and installation of new fibre and Cat6 cabling to support a new Wi-Fi installation from Accl in July and August of 2026. ACCL were superb from start to finish. We cannot fault the quality of the work and we received great advice on our project. Very satisfied customer!
  
 
      Posted on Google  
   
   Brigt Valland 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very professional company, good at understanding our need and efficient delivery of new building network- and WIFI infrastructure. An extra star for making it easy for me to "remote" organize this from Norway.
  
 
      Posted on Google  
   
   Siobhan Codd 
 
 
 
 Trustindex verifies that the original source of the review is Google. We used ACCL for a full WiFi and network install at our Old Street office and are very pleased with the result. They supplied and installed seven Ubiquiti WiFi access points, a UniFi Dream Machine, a 24 port Layer 3 Ubiquiti switch, and ran new Cat6A Leviton cabling with two ports to every AP. The whole job was neat, well planned and done to a very high standard. The coverage across the office is excellent and it looks pretty cool too! Would happily recommend them to anyone needing cabling or network infrastructure done properly.
  
 
      Posted on Google  
   
   Mark Cooper 
 
 
 
 Trustindex verifies that the original source of the review is Google. An excellent service from start to finish!
The ACCL team installed our new network cabling, the foundation in readiness for supplying and installing a new IP CCTV camera system, professionally and efficiently. They were punctual, knowledgeable, and took the time to ensure everything was installed neatly and working perfectly. Their attention to detail and customer service were outstanding. I very much appreciate the initial project management and upfront planning, which combined to secure a successful delivery. I would highly recommend them to anyone looking for reliable network cabling or CCTV installation. Thank you for a fantastic job.
  
 
      Posted on Google  
   
   Mohammed Alhashimi 
 
 
 
 Trustindex verifies that the original source of the review is Google. I would like to express my sincere appreciation to Wayne and his team for the excellent work they carried out. From start to finish, they were professional, reliable, efficient, and clearly took great pride in delivering a high standard of service.

They were professional, efficient, and paid great attention to detail, ensuring everything was neat, clearly labelled, well organised, and completed to a very high standard. The end result was clean, structured, and exactly what we needed.

Wayne and his team were reliable, courteous, and clearly committed to doing the job properly rather than simply getting it done. I would highly recommend them to anyone looking for professional cabling work and a team that genuinely takes pride in the quality of their finish.
  
 
      Posted on Google  
   
   Laurence Rutter 
 
 
 
 Trustindex verifies that the original source of the review is Google. So easy to deal with! Great price and great guys! Did exactly what they agreed, on time and in budget. Would thoroughly recommend them to anyone.
  
 
      Posted on Google  
   
   AlonMel Music 
 
 
 
 Trustindex verifies that the original source of the review is Google. Wayne and team did an excellent job tidying our office data cabinet over the weekend. Professional, clean work—they went above and beyond with cable management and even relocated the router. Communication was impeccable throughout. Highly recommend.
  
 
      Posted on Google  
   
   Amritpal Singh 
 
 
 
 Trustindex verifies that the original source of the review is Google. "Outstanding service from ACCL. They did an incredible job with our networking and data cabling. The setup is neat, professional, and works perfectly. Extremely knowledgeable and easy to work with. I’ll definitely be using them for all our future IT needs!"

Huge Shout to Wayne Connors and David Little for managing this.
  
 
      Posted on Google  
   
   Andy Dawson 
 
 
 
 Trustindex verifies that the original source of the review is Google. We've worked with Wayne, David and the ACCL team for a number of years on projects throughout London. One of very few suppliers that we never have to question their proposal on detail or price, everything is clear, transparent and fair. Projects are always completed on time and there are never any costly surprises which we had previously experienced from other suppliers. They all have a vast knowledge on anything fibre optic cabling, copper cabling or wifi. ACCL is now the only data cabling company in our phone book. Highly recommended.
  
 
  
  
 
     Verified by Trustindex  Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

Pass/Fail Criteria at a Glance

Parameter	Copper limit (Cat 6A)	Fibre limit (OM4 example)
Insertion loss	≤ 32 dB @ 500 MHz	≤ 1.4 dB over 100 m
NEXT (pair-to-pair)	≥ 35 dB @ 500 MHz	n/a
Alien NEXT (PSANEXT)	≥ 20 dB	n/a
TCL	≥ 8 dB	n/a
Connector loss	n/a	≤ 0.35 dB each
Splice loss	n/a	≤ 0.1 dB each
Reflectance	n/a	≤ -35 dB per event
End-face grade	n/a	IEC Grade B or better

Manufacturer warranties may tighten these numbers by a hair; always load the vendor limit set into the tester before the first measurement.

Certification Reports – Your Insurance Policy

A credible report contains:

Project name, address and map of backbone routes
Tester model, serial and calibration date
Limit set used and software version
Individual link records with time-stamp and operator ID
Summary of passes/fails and remedial work log

ACCL stores the native data files in a cloud portal so clients can retrieve them throughout the warranty life. Insurers increasingly ask for those files when investigating downtime claims; a missing report can jeopardise compensation.

Common pitfalls and how to avoid them

Dirty launch leads – skew the 0 dB reference, masking high connector loss. Clean and inspect before every shift.
Swapped wire-pairs – pass wire-map yet fail NEXT. Keep pair twists to within 13 mm of IDC to maintain balance.
Incorrect limit set – Cat 6 results loaded for Cat 6A project give false PASS. Cross-check before testing the first link.
Unbonded shield – F/UTP channels that test fine for NEXT but radiate EMI. Bond to the building earth per earthing guidelines.
Forgotten patch leads – warranty applies only to the tested channel. Test through to the equipment outlet or supply certified cords.

Where ACCL Adds Value

Our Data-Cabling Audits uncover latent failures in legacy estates; our 24/7 Data-Cabling Repair Services re-test after remedial work so the repaired link rejoins the warranty pool. Because ACCL is vendor-accredited, our test results upload directly to Excel and Leviton portals, triggering the warranty certificate automatically – no paperwork chase for your facilities team.

Conclusion – Measure, Certify, Relax

Testing and certification are not optional add-ons; they are the handshake between installation and dependable operation. With the right instruments, methodical procedures and an eye on the pass/fail thresholds, you lock in performance from day one and avoid nasty surprises the next time an OS patch doubles network traffic overnight.

Talk to ACCL if you need a full test plan for a new build, a spot-check on a suspect riser or rapid fault diagnosis on a live fibre. We will bring calibrated tools, certified engineers and clear reports – so you can sign off the project and sleep easy.

0333 900 0101 sales@network-data-cabling.co.uk Contact us

      EXCELLENT  
   Based on 67 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Taj | Postremo IT 💻 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service from ACCL. Setup a wifi installation in central London, with no issues! Highly recommended, fast turn around time.
  
 
      Posted on Google  
   
   Andrew Matthews 
 
 
 
 Trustindex verifies that the original source of the review is Google. We commissioned a Wi-Fi survey and installation of new fibre and Cat6 cabling to support a new Wi-Fi installation from Accl in July and August of 2026. ACCL were superb from start to finish. We cannot fault the quality of the work and we received great advice on our project. Very satisfied customer!
  
 
      Posted on Google  
   
   Brigt Valland 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very professional company, good at understanding our need and efficient delivery of new building network- and WIFI infrastructure. An extra star for making it easy for me to "remote" organize this from Norway.
  
 
      Posted on Google  
   
   Siobhan Codd 
 
 
 
 Trustindex verifies that the original source of the review is Google. We used ACCL for a full WiFi and network install at our Old Street office and are very pleased with the result. They supplied and installed seven Ubiquiti WiFi access points, a UniFi Dream Machine, a 24 port Layer 3 Ubiquiti switch, and ran new Cat6A Leviton cabling with two ports to every AP. The whole job was neat, well planned and done to a very high standard. The coverage across the office is excellent and it looks pretty cool too! Would happily recommend them to anyone needing cabling or network infrastructure done properly.
  
 
      Posted on Google  
   
   Mark Cooper 
 
 
 
 Trustindex verifies that the original source of the review is Google. An excellent service from start to finish!
The ACCL team installed our new network cabling, the foundation in readiness for supplying and installing a new IP CCTV camera system, professionally and efficiently. They were punctual, knowledgeable, and took the time to ensure everything was installed neatly and working perfectly. Their attention to detail and customer service were outstanding. I very much appreciate the initial project management and upfront planning, which combined to secure a successful delivery. I would highly recommend them to anyone looking for reliable network cabling or CCTV installation. Thank you for a fantastic job.
  
 
      Posted on Google  
   
   Mohammed Alhashimi 
 
 
 
 Trustindex verifies that the original source of the review is Google. I would like to express my sincere appreciation to Wayne and his team for the excellent work they carried out. From start to finish, they were professional, reliable, efficient, and clearly took great pride in delivering a high standard of service.

They were professional, efficient, and paid great attention to detail, ensuring everything was neat, clearly labelled, well organised, and completed to a very high standard. The end result was clean, structured, and exactly what we needed.

Wayne and his team were reliable, courteous, and clearly committed to doing the job properly rather than simply getting it done. I would highly recommend them to anyone looking for professional cabling work and a team that genuinely takes pride in the quality of their finish.
  
 
      Posted on Google  
   
   Laurence Rutter 
 
 
 
 Trustindex verifies that the original source of the review is Google. So easy to deal with! Great price and great guys! Did exactly what they agreed, on time and in budget. Would thoroughly recommend them to anyone.
  
 
      Posted on Google  
   
   AlonMel Music 
 
 
 
 Trustindex verifies that the original source of the review is Google. Wayne and team did an excellent job tidying our office data cabinet over the weekend. Professional, clean work—they went above and beyond with cable management and even relocated the router. Communication was impeccable throughout. Highly recommend.
  
 
      Posted on Google  
   
   Amritpal Singh 
 
 
 
 Trustindex verifies that the original source of the review is Google. "Outstanding service from ACCL. They did an incredible job with our networking and data cabling. The setup is neat, professional, and works perfectly. Extremely knowledgeable and easy to work with. I’ll definitely be using them for all our future IT needs!"

Huge Shout to Wayne Connors and David Little for managing this.
  
 
      Posted on Google  
   
   Andy Dawson 
 
 
 
 Trustindex verifies that the original source of the review is Google. We've worked with Wayne, David and the ACCL team for a number of years on projects throughout London. One of very few suppliers that we never have to question their proposal on detail or price, everything is clear, transparent and fair. Projects are always completed on time and there are never any costly surprises which we had previously experienced from other suppliers. They all have a vast knowledge on anything fibre optic cabling, copper cabling or wifi. ACCL is now the only data cabling company in our phone book. Highly recommended.
  
 
  
  
 
     Verified by Trustindex  Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

FAQ – Cable Testing and Certification

Q. What is the difference between a pass and a fail on a cable certification test?

A pass means the installed link meets every performance parameter (such as insertion loss, return loss and crosstalk) required by the specified category standard end to end. A fail on any single parameter means the link needs to be re-terminated or re-tested before it can be certified.

Q. What equipment is used to test and certify data cabling?

Certified field test equipment such as Fluke DSX series testers is used to produce independently verifiable results for every installed copper or fibre link, rather than a simple continuity check.

Q. What should be included in a commercial cabling handover?

A full set of certified test results for every link, as-built drawings, a cable schedule, cabinet and outlet labelling, and any relevant warranty documentation, so the installation can be verified and managed going forward.

Q. Why does cable certification matter for a manufacturer warranty?

Manufacturer-backed system warranties typically require certified test results as proof the installation meets the standard the warranty is based on – without them, a warranty claim can be difficult or impossible to support.

See it in practice: our seven-floor London network infrastructure upgrade for The Writer was tested and certified to exactly this standard. See also our structured data cabling hub.

0333 900 0101 sales@network-data-cabling.co.uk Contact us

      EXCELLENT  
   Based on 67 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Taj | Postremo IT 💻 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service from ACCL. Setup a wifi installation in central London, with no issues! Highly recommended, fast turn around time.
  
 
      Posted on Google  
   
   Andrew Matthews 
 
 
 
 Trustindex verifies that the original source of the review is Google. We commissioned a Wi-Fi survey and installation of new fibre and Cat6 cabling to support a new Wi-Fi installation from Accl in July and August of 2026. ACCL were superb from start to finish. We cannot fault the quality of the work and we received great advice on our project. Very satisfied customer!
  
 
      Posted on Google  
   
   Brigt Valland 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very professional company, good at understanding our need and efficient delivery of new building network- and WIFI infrastructure. An extra star for making it easy for me to "remote" organize this from Norway.
  
 
      Posted on Google  
   
   Siobhan Codd 
 
 
 
 Trustindex verifies that the original source of the review is Google. We used ACCL for a full WiFi and network install at our Old Street office and are very pleased with the result. They supplied and installed seven Ubiquiti WiFi access points, a UniFi Dream Machine, a 24 port Layer 3 Ubiquiti switch, and ran new Cat6A Leviton cabling with two ports to every AP. The whole job was neat, well planned and done to a very high standard. The coverage across the office is excellent and it looks pretty cool too! Would happily recommend them to anyone needing cabling or network infrastructure done properly.
  
 
      Posted on Google  
   
   Mark Cooper 
 
 
 
 Trustindex verifies that the original source of the review is Google. An excellent service from start to finish!
The ACCL team installed our new network cabling, the foundation in readiness for supplying and installing a new IP CCTV camera system, professionally and efficiently. They were punctual, knowledgeable, and took the time to ensure everything was installed neatly and working perfectly. Their attention to detail and customer service were outstanding. I very much appreciate the initial project management and upfront planning, which combined to secure a successful delivery. I would highly recommend them to anyone looking for reliable network cabling or CCTV installation. Thank you for a fantastic job.
  
 
      Posted on Google  
   
   Mohammed Alhashimi 
 
 
 
 Trustindex verifies that the original source of the review is Google. I would like to express my sincere appreciation to Wayne and his team for the excellent work they carried out. From start to finish, they were professional, reliable, efficient, and clearly took great pride in delivering a high standard of service.

They were professional, efficient, and paid great attention to detail, ensuring everything was neat, clearly labelled, well organised, and completed to a very high standard. The end result was clean, structured, and exactly what we needed.

Wayne and his team were reliable, courteous, and clearly committed to doing the job properly rather than simply getting it done. I would highly recommend them to anyone looking for professional cabling work and a team that genuinely takes pride in the quality of their finish.
  
 
      Posted on Google  
   
   Laurence Rutter 
 
 
 
 Trustindex verifies that the original source of the review is Google. So easy to deal with! Great price and great guys! Did exactly what they agreed, on time and in budget. Would thoroughly recommend them to anyone.
  
 
      Posted on Google  
   
   AlonMel Music 
 
 
 
 Trustindex verifies that the original source of the review is Google. Wayne and team did an excellent job tidying our office data cabinet over the weekend. Professional, clean work—they went above and beyond with cable management and even relocated the router. Communication was impeccable throughout. Highly recommend.
  
 
      Posted on Google  
   
   Amritpal Singh 
 
 
 
 Trustindex verifies that the original source of the review is Google. "Outstanding service from ACCL. They did an incredible job with our networking and data cabling. The setup is neat, professional, and works perfectly. Extremely knowledgeable and easy to work with. I’ll definitely be using them for all our future IT needs!"

Huge Shout to Wayne Connors and David Little for managing this.
  
 
      Posted on Google  
   
   Andy Dawson 
 
 
 
 Trustindex verifies that the original source of the review is Google. We've worked with Wayne, David and the ACCL team for a number of years on projects throughout London. One of very few suppliers that we never have to question their proposal on detail or price, everything is clear, transparent and fair. Projects are always completed on time and there are never any costly surprises which we had previously experienced from other suppliers. They all have a vast knowledge on anything fibre optic cabling, copper cabling or wifi. ACCL is now the only data cabling company in our phone book. Highly recommended.
  
 
  
  
 
     Verified by Trustindex  Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

Need Cable Testing and Certification?

Book a free site survey and get every link tested, certified and documented to the relevant standard.

0333 900 0101 sales@network-data-cabling.co.uk Contact us

Active Communication Company Ltd trades as ACCL, ACCL Data Cabling London and ACCL Data Cabling Kent · Commercial data cabling and network infrastructure specialists