ALL-MC115VDSL2 Mini Modem Master/Slave Manual
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3. Symptom: VDSL Link cannot be established.
Cause:
VDSL setting failure or phone cable length is over the specification limit.
Solution:
3.1 Please make sure that the phone wire must be connected between ALL-MC115VDLS2 (CO)
and ALL-MC115VDLS2 (CPE) when both are power on. ALL-MC115VDLS2 (CO) will do link
speed function depending on phone wire length, therefore if ALL-MC115VDLS2 (CO) can’t
detect ALL-MC115VDLS2 (CPE) over phone wire while both power on, this will cause the link to
fail.
3.2 Please check the phone wire, we recommend use 24 gauge with twisted pair and without rust,
and the length is not over 3 km.
3.3 Please check the correct Dip Switch setting. (CO: PIN1 ON, CPE: PIN1 OFF)
3.4 Please reinsert power adapter when changing cable length or link time over 3 minutes.
Note:
Phone wire must meet CAT 3 standard or above and without clustering, otherwise will cause more
cross talk issue to reduce DSL power driver.
4. Problem:
What is VDSL2?
Answer:
Very-high-speed digital subscriber line 2 (VDSL2) is an access technology that exploits the existing
infrastructure of copper wires that were originally deployed for traditional telephone service. It can
be deployed from central offices, from fiber-optic connected cabinets located near the customer
premises, or within buildings. It was defined in standard ITU-T G.993.2 finalized in 2005.
VDSL2 was the newest and most advanced standard of digital subscriber line (DSL) broadband
