Connecting An Analog Telephone Device - Cisco 761M Installation Manual

Figure 4-2
C O N FI G
Power supply for
ISDN telephone

Connecting an Analog Telephone Device

If you are using a Cisco 765, Cisco 766, Cisco 775, or Cisco 776, you can connect one or
two analog devices, such as a telephone, fax machine, or modem, directly to the router. The
analog device is connected to basic telephone services through the same ISDN line the
router uses.
Also, if you are outside of North America, you might need to provide an adapter cable for
the type of connector that your device uses (the telephone uses an RJ-11 connector.)
To connect the analog device to the router, connect the telephone cable (provided with the
analog device) to the RJ-11 port (labeled with a telephone icon) on the rear panel of the
router, as shown in Figure 4-3.
Router to ISDN Power Supply Connection (Cisco 766 Shown)
10 BA SE T
Li nk
N O D E
H U B IS D N S /T
IS D N U
S
0
N T -1
From ISDN S/T port
LI NE
HE R
PH ON E OT
+5 V --- 1.5
A +/- 5%
-30 V- -- 0.2
A +/- 25 %
RJ-45-to-RJ-45 cable
ISDN and Analog Telephone Devices 4-5