AT&T SB67138 - Manual (Page 14)

L3/L4 L1/L2
Getting started
Telephone base installation
Option 2: To connect four one-line wall jacks
NOTES:
If you have three one-line wall jacks, you need a two-line adapter for two of the lines.
The long cords supplied with the telephone are four-conductor cords.
1.
2.
Line 1 Line 2 Line 3 Line 4
Electrical outlet
not controlled
by a wall switch
Power adapter
Two-line adapters
8
If you have DSL
high-speed Internet
service, a DSL filter
(not included) is
required on each
DSL line.
L3/L4 L1/L2