business broadband

Fonehouse Belfast provides business broadband internet connections with low contention and priority shared connections for businesses throughout the region. With ADSL2+, ADSL M, FTTC and various other high speed broadband connections, Fonehouse Belfast helps businesses by providing 8Mb, 24Mb, 40Mb and 80Mb access.

These broadband products are available over a telephone line or via DOCSIS3, some of the standard business broadband options are explained below.

ADSL Contention

Contention ratios are used to establish how many users share a single bandwidth. Our ADSL business broadband services offer an average ratio of 5:1, with the minimum being 2:1 and the maximum 10:1. This is drastically lower than household broadband contention rates that average between a 20:1 and 50:1 ratio.

Simply put, the fewer users you contend with, the more bandwidth you are guaranteed, and the quicker your data will transfer.


This broadband service runs over traditional analogue/copper lines to the cabinet and then through BT’s 21CN technology where available. This service offers improved speeds of up to 24Mbps download and 1.3Mbps upload.

Annex M

For businesses that require quicker upload speeds to that of ADSL, Annex M broadband uses intelligent rate-adaptive technology that diverts 10-15 per cent of download speeds to aid uploading. The result is a service that gives uploads speeds of up to 2.5Mbps. During low upload periods, this service offers up to 24Mbps download speeds.


Fibre to the Cabinet offers exceptionally high speeds to remote businesses, or those that require high broadband speeds. The traditional cable existing between offices and the local cabinet is then linked with a super-fast fibre cable to the exchange – offering download speeds of up to 80Mbps and upload speeds of up to 20Mbps.


DOCSIS3 is the technology that Virgin Media use to provide their phone and television services throughout the region.

You may never have heard the term DOCSIS — an acronym for Data Over Cable Service Interface Specification.

To put it simply, DOCSIS is the international standard used for transferring data over cable TV systems. The current DOCSIS spec is 3.1, which was published in 2013. It supports blazing speeds of 10 Gigabits per second (Gbps) for downloads downstream and 1Gbps upstream. The kind of speeds you’ll typically only get with a fiber optic connection.

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