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Broadband

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The benefits of broadband


Telnet is the only place you will need to go for your broadband requirements – we offer business grade broadband, IP transit and bundled internet services. There are also a variety of service options available, including: Standard product:
  • End-user control panel with full support features
  • POP3 or IMAP mailboxes
  • Dynamic IP addressing
  • Optional domain name service
  • Optional fixed IP addressing
  • Unbundled product:
  • ADSL access only
  • Dynamic IP addressing
  • Optional fixed IP addressing
  • ADSL2+

    How does ADSL2+ work?

    The diagram above shows, very basically, how an ADSL/ADSL2+ connection is made.

    You will see that with ADSL the line connects to a DSLAM (Digital Subscriber Line Access Multiplexer) which is a network device located in the telephone exchange. It connects multiple phone lines to a high-speed

    Internet backbone using multiplexing technology. As you can imagine, a lot of equipment is required to provide the various services to customers e.g. ISDN, Telephone, Broadband.

    Over the past 2 years BT have been upgrading their exchanges and installing MSANs (Multi Service Access Nodes) which integrate all services onto a single box thus reducing the variety of different equipment needed to provide such services. This is more cost effective, simpler to provide and facilitates greater flexibility for upgrading services and bandwidth in the future. When you have an ADSL2+ service your line connects to an MSAN not the older DSLAM.

    ADSL2+ uses a greater range of frequencies on the copper phone line to provide more bandwidth. It also uses some much higher frequency ranges than standard ADSL. However, the higher frequencies dissipate and degrade in the copper phone line over a much shorter distance than the lower range frequencies of standard ADSL which is why the speed benefit of ADSL2+ can only really be experienced on shorter phone lines. 20CN

    21CN

    The 21st Century Network that is home to WBC product family which includes ADS2+, Annex-M and FTTC.

    Fibre Broadband

    What is fibre broadband?
    A service for offices providing exceptional downstream and upstream speeds. FTTC broadband comes in two variants which offer a downstream line speed of 80meg (80Mbps) or 40meg (40Mbps), but the actual maximum speed of the service will be slightly lower than this at around 78 / 39Mbps. Different upstream speeds are available at either 2Mbps or 10Mbps on the 40meg variant, and 20meg up on the 80meg..

    There are generally two types of fibre broadband connections, however we offer the FTTC option:
    Fibre-to-the-Cabinet (FTTC) involves running fibre optic cables from the telephone exchange or distribution point to the street cabinets which then connect to a standard phone line to provide broadband.

    This is combined with a copper cable from the cabinet to a business which uses VDSL or similar technology that can deliver much faster speeds over shorter distances

    You will need an analogue line already installed or will require the line to be fully installed before you can order a Fibre product. Unlike normal broadband an engineer will need to visit to install Fibre as it is a different type of connect. The router needed also has a different connection to a normal ADSL router therefore if you are re-grading to Fibre you will need to change your current router. Most cable routers will work with fibre you can use PPPoE and have an Ethernet WAN port.

    What speed can I expect from fibre broadband? (FTTC)

    The speed of your connection will vary depending on the distance to the fibre cabinet that serves your premises. If you know roughly how far the cabinet is, you should be able to calculate the speed you should receive based on the figures in the table below:

    • Distance to cabinet (metres)
    • Estimated downstream connection speed
    • Estimated upstream connection speed
    • Cumulative %'age of premises at this distance

    Assured Broadband

    The assured broadband product is designed to work with voice products. The service is managed by the network and the router is supplied by the network and locked down. As always 1 IP Address comes as standard.

    The reason why the product is assured is that you have the assurance period of 10 working days. During this period the service is monitored by the network remotely.

    Assured IP Services enables us to take to market a complete IP Telephony service of up to 30 channels which includes the broadband and customer router.

    Being able to support up to 30 concurrent calls and working to a specified set of SLAs, the offering addresses a large proportion of the IP Telephony market. Furthermore, the end-to-end design of the service not only delivers improvements in quality and reliability, but as there is only one point of contact for service issues. Comprehensive monitoring across all the service elements means that if and when a problem occurs, our support teams can get to the root cause of the issue fast.