Emergency network cable repair: business-critical infrastructure, downtime measured in lost revenue
When a network cable fault takes critical infrastructure offline — a contractor's drill has gone through a wall and severed the run feeding half the office, rodents have chewed the cable in the comms-room ceiling void, water ingress has flooded the comms cabinet — SEG Ltd provides emergency cable repair across England. Network cable failures don't just affect IT; they take CCTV offline, drop access control comms, kill the EPOS, and stop phones working. Downtime is measured in lost revenue, missed deliveries, and stranded staff.
Our emergency response is built around fast fault location and on-the-spot re-termination. We attend with a Fluke DSX-5000 cable certifier (also acts as TDR for break location on copper), an OTDR for fibre fault location, and a stocked van: replacement Cat5e/Cat6/Cat6a patch and bulk cable, keystones, faceplates, splice trays, fibre connectors and fusion splicer. For a typical "contractor put a drill through a cable" emergency we can usually locate the break to within a metre using TDR, re-pull or splice in the right place, and re-certify the link — often in a single visit.
For fibre breaks we use OTDR to locate the fault along the route (typically within a few metres) and fusion-splice repair where appropriate. Pre-terminated runs sometimes need full replacement, but most field-spliced runs can be repaired in-situ. Contact us or call 0330 133 9801 — describe what's happened (cable strike, water, rodent, unknown) and where, and we'll dispatch with the right kit.
Common emergency cable repair scenarios
Contractor cable strike
Drilled through, screwed through, severed during partition work or floor-box installation. TDR locates to within a metre. Splice or re-run depending on accessibility. Most repaired same visit.
Rodent damage
Common in ceiling voids and risers. Often multiple cables affected at the same point. We splice or re-run, plus advise on rodent-resistant containment for the affected route.
Water ingress / flooded comms cabinet
Cable damage from water, plus the more urgent problem of energised electrical equipment in water. Power isolation first, then cable damage assessment and replacement, then drying and re-testing of any recoverable equipment.
Fibre break on inter-building backbone
OTDR locates the break point along the duct or aerial route. Splice repair where possible; new cable pull for severely damaged runs. Critical for sites with separated comms rooms.
External / underground cable hit
Streetworks contractor hits a duct. Excavate to the break, splice or replace the affected length, re-bury per HAUC standards.
Mass-termination failure after building works
Multiple links failing simultaneously after a refurbishment — usually a patch panel that's been disturbed. Re-termination at the panel with re-certification.
How an emergency cable call works
1. Triage
Describe what's happened: cable strike, water, rodent, unknown. Where is the affected link (which floor / room / building). What's offline as a result. We dispatch with the right gear.
2. Locate + repair
On-site fault location with TDR or OTDR — typically within an hour of arrival for most fault types. Re-termination, splice, or re-pull depending on damage and accessibility.
3. Certify + document
Repaired link Fluke-certified to category spec. Test pack issued in PDF — useful for warranty, IT documentation, and any future fault investigation.
Emergency cable repair FAQs
For copper, TDR identifies the break point usually within a metre or two — typically within an hour of arrival on site. For fibre, OTDR is similarly fast. We don't dig up your floor speculatively; we know where the break is before disturbing anything.
Yes — every repair is Fluke-certified to TIA category spec after completion. PDF test report issued. This matters because re-terminated cables sometimes pass connectivity tests but fail full category certification (NEXT, return loss, length, etc.) — and a Fluke certification confirms the link is genuinely back to spec, not just "kind of working".
Rare — most cable faults are repairable in a single visit. Where damage is too severe (e.g. cable destroyed over a long underground run) we propose a phased approach: temporary patch cable to restore service, plus a return visit to complete the proper repair. Worst case we coordinate excavation contractors for buried runs.
Yes, with out-of-hours rates. Where downtime is genuinely critical (24-hour operations, data centre, hospital, etc.) we can attend evenings and weekends — we'll quote honestly on the phone and confirm engineer availability before dispatching.