Copper pairs cause interference with each other much like the change in signal when someone touches the TV antenna. This interference, called crosstalk causes degradation in performance that can be significant especially when a cable binder is full. In the diagram below the vectored line would be roughly the equivalent to single line performance. But as you can see the Full Binder line shows the effects of crosstalk on the performance of the VDSL2 pairs.
Vectoring is the process of dynamically predicting crosstalk and then canceling that crosstalk much like a pair of noise canceling headphones. This brings the VDSL2 performance back to nearly the level of what a single VDSL2 pair would achieve.
Vectoring works by predicting crosstalk across the vector control group (pairs in a binder). This requires significant processing, power and therefore typically a Vector Control Processor (VCP) is required in addition to the VDSL2 line cards to perform vectoring.
Calix solutions support multiple configurations for vectoring which ensures cost effective solutions that scale from very small to very large vector control group.
|Product||Description||Vectoring Group without VCP||Largest Vectoring Group with VCP|
|E7-2 VDSL2-48||VDSL2 card with integrated POTs Splitters||48||N/A|
|E7-2 VDSL2-48C||VDSL2 card supporting integrated VoIP||48||N/A|
|E7-2 VDSL2-48D||VDSL2 data only card||48||N/A|
|E7-2 VDSL2-48 r2||VDSL2 card with integrated POTs Splitters||48||384|
|E7-2 VDSL2-48C r2||VDSL2 card supporting integrated VoIP||96||384|
|E7-2 VDSL2-48D r2||VDSL2 data only card||96||384|
|E5-48||VDSL2 Fixed Form factor unit with integrated splitters||48||N/A|
|E5-48C||VDSL2 Fixed Form factor unit supporting integrated VoIP||48||N/A|
|E3-48||Sealed VDSL2 Unit with integrated POTs splitters||48||N/A|
|E3-48C||Sealed VDSL2 Unit with integrated POTs splitters||48||N/A|