ADSL2+ Connectivity Support
Modem / Router Settings
Before you can use your ADSL connection you must ensure that your ADSL router is configured with the following settings:
VPI: 0
VCI: 101
Encapsulation: PPPoE (PPP over Ethernet) LLC/SNAP
Modulation: Multimode (This will allow your modem to negotiate the newest modulation standard supported by the DSLAM equipment at the exchange)
Username: exa-xxxxx-xx@dsl.exa-networks.co.uk (please complete xxxxx-xx)
DNS Servers: 82.219.4.24 & 82.219.4.25
Important Information
Equipment *must* support ADSL2/2+ in order to take advantage of the higher download/upload speeds offered by this service.
Most routers will factory default to G.DMT modulation, which is "classic ADSL". Customers should set multimode as this will cause the modem chipset to attempt negotiation of the fastest DSL modulation standard in the following order:
- ADSL2+ (G.992.5) Annexe A
- ADSL2 (G.992.3) Annexe A
- G.DMT (G.992.1)
Customers moving from the BT service will not see any speed increase if G.DMT is forced on their router. Setting multimode will allow the router to auto-negotiate G.DMT whilst on BT and then ADSL2+ or ADSL2 (depending on capability of router) when the line swaps over to the LLU service. It is also important that you remember to change to VCI setting or the line will not sync.
Those customers moving to an Annexe-M "upto 2.5M upstream" product must ALWAYS force their router/modem to ADSL2+ (G.992.5) Annexe-M. Unfortunately most ADSL modem chipsets will not negotiate Annexe-M automatically so customers who do not set this will get at most 1.3M upstream. Similarly, if a customer is on any other service provided by us then setting Annexe-M on the router will mean the modem will not connect at all.
