3Com WL-603 - Manual (Page 26)

24 C HAPTER 2: I NSTALLING THE R OUTER
Figure 6 Connecting the Router (with splitter)
Figure 7 Connecting the Router (without splitter)
1 Run the provided telephone cable from the wall jack providing ADSL
service to the ADSL port on your Router. When inserting an ADSL
RJ-11(Annex A) or RJ-45 (Annex B) plug, be sure the tab on the plug
clicks into position to ensure that it is properly seated. If you are using
splitterless ADSL service, add low-pass filters between the ADSL wall jack
and your telephones. (These filters pass voice signals through but filter
data signals out.)