Max ADSL

As of the First of May 2006, we are now offering up to 8mb ADSL. Max ADSL utilises the current generation of ADSL technologies, this means that most if not all ADSL router/modems will be able to support these speeds without purchasing new hardware.

We offer MAX to both Capped Domestic customers (up to 8 Mb download 448Kb upload) and Capped Business customers (up to 8 Mb download 832 Kb upload). As with all ADSL the actual speed of the connection is dependant on line quality and distance.

Please use the below links to see what services we offer.

Which Should I choose, Business or Domestic ADSL?

1. A Router allows many PCs to be connected at the same time.
2. Most PCs have Ethernet connections installed, and if not then cards are cheap and readily available.
3. Improved security, routers have a built-in NAT firewall, modems can leave your computer exposed to malware.
4. If something goes wrong, a router is easier to debug and fix or replace than a USB Modem.

We do not supply or provide installation support of ADSL Modems. Instead we offer the following range of ADSL routers preconfigured for your ADSL connection. All these routers have a built-in four port ethernet switch and can provide packet filtering, port forwarding, network address translation and IPSec L2TP and PPTP VPN support.
Routers are supplied with a single ADSL microfilter, additional filters are available at £9.50.

In reality the contention appears to be more like 500:10 rather than 50:1.  As the number of sharing connections increases so the effect of other traffic on your speed becomes smaller. The available bandwidth between your local exchange and the Internet is shared between all the users on the exchange. For example if there are 1000 home 500Kb connections, there will be at least 10,000Kb of bandwidth available shared between all the users.

In order to further ensure fairness, Interdart apply a prioritisation rule on all ADSL services. Prioritisation is based on calculated moving averages of each customer's input and output traffic.
All users start with priority 0. Any connection utilising 100% of their rated connection capacity continuously for 30 minutes will have their priority set to 1. Users utilising 100% for approximately 7 hours will have their priority set to 2. Heavy users taking 100% of their maximum capacity for more than 20 hours will have their priority set to 3. Internet Traffic is routed according to the assigned priority. In general this has the effect of reducing any adverse effect on normal traffic when a large number of users are making simultaneous heavy demands on the service. When a customer's utilisation drops, then the priority will be reset back to 0 based on the recalculated moving average. If the average utilisation remains below 20% then the connection will remain in priority 0.
This will have no detrimental effect on your ADSL maximum bandwidth nor on your contention ratio, however users in priority 3 may find their throughput and performance is substancially reduced. The purpose is solely to provide the best possible service and response times to regular users.

Priority bands 0 and 1 will honour TCP/IP QOS flags, providing improved performance for interactive and real-time services such as Voip.

Some BT phone line services are not compatible with the provision of ADSL. If you wish to order ADSL on a phone line that has one of these services then the service must first be removed.