EFM uses multiple copper pairs to deliver the service. These are bonded together to provide a combined service. By combining pairs you will receive a much more reliable service because if there is a fault with a single wire then the service will just slow down, rather than taking your business off line.
In addition, unlike ADSL where the customer is typically responsible for reporting a fault, with EFM the service is proactively managed by the Gradwell operations centre and where a fault occurs, it is quickly spotted and resolved.
Finally, if there is a copper wire fault in the BT Openreach network, EFM is provided with “Service Level 4” which aims to have an engineer resolve the fault within 6 hours.
Like ADSL, the speed an EFM circuit will run at will depend on your distance from the exchange. However, with EFM we can guarantee the minimum speed you will receive1. In our trials, we found that most customers receive a faster speed service than we can guarantee.
EFM is also a symmetrical service – meaning that both the upload and the download speed are the same. This is great if you are making Internet Telephony calls, using video, or sending / uploading large files to the internet.
Indicative speeds
| Distance from local exchange | EFM 2 Pair | EFM 4 Pair |
|---|---|---|
| 0m-100m | 10Mb | 20Mb |
| 200m - 500m | 8Mb | 16Mb |
| 600m - 800m | 7Mb | 15Mb |
| 900m - 1100m | 7Mb | 14Mb |
| 1200m - 2100m | 6Mb | 14Mb |
| 2200m - 2300m | 6Mb | 13Mb |
| 2400m | 6Mb | 12Mb |
| 2500m | 5Mb | 12Mb |
| 2600m - 2700m | 5Mb | 11Mb |
| 2800m - 2900m | 4Mb | 10Mb |
| 3000m - 3100m | 4Mb | 9Mb |
| 3200m | 3Mb | 8Mb |
| 3300m | - | 8Mb |
| 3400m | - | 7Mb |
| 3500m - 3600m | - | 6Mb |
| 3700m | - | 5Mb |
| 3800m | - | 4Mb |
| 3900m | - | 3Mb |
| 4000m+ | - | - |
To order EFM, you will need to contact our sales team. Orders are subject to survey and take between 25 to 90 days to be delivered. EFM is available in 1500 of the most popular UK telephone exchanges and you can be upto approximately 4km from the exchange.
To use EFM, BT Openreach will install a number of analogue copper pairs and associated wall sockets. In addition an EFM network adaptor will be installed, which provides you with an Ethernet socket. You will need to have a spare power socket available within 1M of the BT sockets.
Upgrading EFM
It is not possible to upgrade from 2 Pair EFM to 4 Pair EFM or vice versa. Should you wish to upgrade in the future, you would have to cease your line and reinstall.
We can allow some overlap of the circuits to ensure that you do not lose connectivity in these circumstances, but this may be limited to the number of pairs available as exchange capacity may have changed from the time the original order was placed to the time you wish to upgrade.
EFM provides you with an RJ45 Ethernet socket, and a number of public IP addresses (typically up to 8, but more are available on request). You can either plug an Ethernet switch into this socket and connect multiple devices, or connect a router or firewall if your network requires.
| Product | 2 Pair EFM | 4 Pair EFM |
|---|---|---|
| Bandwidth | 2Mb to 10Mb | 2Mb - 20Mb |
| Installation | £1,200.00 - 1 year contract 50% discount - 3 year contract |
£1,650.00 - 1 year contract 50% discount - 3 year contract |
| Rental | £240.00 per month £2,880.00 per year |
£350.00 per month £4,200.00 per year |
Contract
All orders of EFM Leased Lines are subject to a contract, which can be downloaded here. Please return any signed contracts by either fax (01225 800 801) or by post to EFM Orders, 26 Cheltenham Street, Bath, BA2 3EX.
Charges
| Cancellation time | Cost |
|---|---|
| From confirmation of installation date to 5 days before installation | 75% of install fee |
| From 4 days to 1 day before installation | 95% of install fee |
| From installation to RFS (Ready for Service, approx 10 days) | 100% of install fee, plus 100% of year 1 fees |
| Reason | Cost |
|---|---|
| Visit charge (if not covered by service contract) | Various - please refer to Openreach pricing |
| Time related charges during installation (if not covered by service contract) | Various - please refer to Openreach pricing |
| Excess construction charge (alternate location/additional infrastructure) | Various - please refer to Openreach pricing |
| Time related charges during fault repair (if not covered service contract) | £80.00 per hour |
| Special fault investigation (e.g. customer request for an engineer when not needed) | £150.00 |
| Aborted visit (e.g. customer not able to grant engineer access) | £150.00 |
If your business has over 10 employees, a high level of internet usage – particularly if you are using Internet Telephony, uploading or sending lots of files to the internet, or has an ADSL broadband service that is continually disconnecting due to unreliable copper wiring, consider EFM.