Cisco 1603R User Manual page 45

Figure 3-5 Connecting an ISDN Telephone to a Power Supply
Power supply for
ISDN telephone
LIN E
HE R
PH ON E OT
Connect the power supply cable to the power outlet, as shown in Figure 3-6.
Step 4
Figure 3-6 Connecting an ISDN Telephone Power Supply to a Power Outlet
The OK LED on the rear panel of the router (next to ISDN PHONE port) lights
Step 5
when the second ISDN device has synchronized with the central office switch.
ISDN telephone (rear view)
RJ-45-to-RJ-45
ISDN telephone cable
Power supply for
ISDN telephone
Installing the Telephone
Optional Installations 3-9