ADTRAN 1200070L1 - Manual (Page 41)

Chapter 2: Installation
61200.070L1-1 Express XL/XLT User Manual 25
Figure 2-2
Wiring Scheme 2:
Retain single analog telephone
service and add ISDN service
To
Telephone
Company
Yellow
Red
Green
Black
To
Telephone
Company
Yellow
Red
Green
Black
Express XLT
10-Base-T Phone U
Personal
Computer
New Wiring Scheme
Red Green
Ensure other yellow and black wire functions are removed
before using this wiring scheme.
W A R N I N G