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Comparison

Fiber vs cable for business internet

Fiber and cable describe connection media; dedicated and shared describe service commitments. This guide compares dedicated fiber internet with business cable broadband, then shows what to check if shared fiber broadband is also available.

A fiber connection is not automatically a dedicated circuit. Ask each supplier whether capacity is committed, which speeds apply in both directions, and what the written repair and uptime terms actually cover.

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FactorDedicated fiber / DIABusiness cable / broadband
Capacity modelCommitted service terms in the quoteShared access; confirm the service terms
SymmetryOften symmetrical; verify committed ratesOften asymmetrical (faster down than up)
SLACompare the quoted uptime, repair and credit termsCommitments vary by offer; check the contract
Install timelineConfirm whether construction or building access is neededConfirm the address-specific install window
Typical fitCloud-heavy ops, VoIP at scale, hosting, revenue-critical sitesOffices, retail, branches where cost-to-performance matters

When dedicated fiber may justify a higher quote

Consider dedicated fiber when committed upload bandwidth, predictable capacity or contractual uptime remedies matter to your operation. Ask for the exact service terms and installation plan at your address before comparing its total contract cost with cable or shared fiber broadband.

When cable is the sensible choice

Business cable can be a sensible primary service when its quoted capacity, repair terms and price fit the site. Compare the full contract cost with dedicated and shared fiber offers, and assess a backup connection separately.

What to compare in the contract (not the brochure)

  • Access medium versus dedicated or shared service, and committed upload speed
  • Install window, construction charges, and who pays if the build slips
  • SLA metrics, how downtime is measured, and what credits you can claim
  • Auto-renewal language and notice period before term expiry
  • Equipment rental, modem fees, and early-termination conditions

For a deeper buying framework, see our business internet buyer's guide or explore business internet procurement.

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