What is ADSL Annex B?

For ADSL/VDSL routers, there are two types of WAN interface. While Annex A is for ADSL over POTS, Annex B is for ADSL over ISDN. We may tell the annex type by checking the type or the color of the DSL port.

What does Annex B mean?

Definition: Annex I and Annex B Countries/Parties are the signatory nations to the Kyoto Protocol that are subject to caps on their emissions of GHGs and committed to reduction targets–countries with developed economies. Annex B countries have their reduction targets formally stated.

What is Annex in modem?

Annex M is an ADSL2+ standard that increases your upstream data rate beyond the limits of standard ADSL2+. Most Australian ADSL2+ uses the Annex A standard, with a theoretical upstream data rate of 1.4 Mbps. Annex M increases the maximum data rate—up to 3 Mbps.

What is the difference between ADSL and ADSL2?

ADSL vs ADSL2+ The major difference between ADSL and ADSL2+ internet is the speed each service can deliver. Both connections use the same ADSL technology and need a telephone connection to work, the difference is that ADSL2+ offers a faster broadband connection.

Can a modem be used on an Annex B Line?

Modems for Annex A can’t be used on Annex B lines and vice versa. Annex B was designed to work in collaboration with ISDN telephone lines (and can be used on normal POTS lines) which is why it became the standard in Germany. UK has/had very little ISDN services, so they adopted Annex A

What’s the difference between Annex A and B?

It’s a different DSL protocol defining how the internet circuit is combined with the phone circuit on a telephone line. Modems for Annex A can’t be used on Annex B lines and vice versa. Annex B was designed to work in collaboration with ISDN telephone lines (and can be used on normal POTS lines) which is why it became the standard in Germany.

What is the difference between Annex A and B for VDSL2?

For ADSL/2/2+, ITU G.992.1, G.992.3, and G.992.5, Annex A refers to asymmetric DSL (ADSL) over basic telephone service, and Annex B refers to ADSL over ISDN. For VDSL2, Annex A specifies band plans for the North American region and enables VDSL2 to be deployed with traditional basic telephony or in an all-digital mode.

What kind of port does Annex A router use?

Annex A router uses RJ-11 for its DSL port. Annex B router uses RJ-45. For Vigor2860/2760/130 Series, Annex A router use black-colored DSL Port. Annex B Router uses a gray-colored one.