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If you are using a Cisco 765 or Cisco 766, you can
connect telephones and facsimile machines directly
to the router.
Connect the telephone cable (provided with your
telephone or facsimile machine) to the gray port
labeled PHONE 1 or PHONE 2 on the rear panel of
your router.
If you are connecting only one device, connect it to
the port labeled PHONE 1.
2 Connect Optional Telephones and Facsimile Machines
C
O
N
F
IG
+5V ---1.5A +/-5%
-30V--- 0.2A +/-25%
S
0
NT-1
ISDN S/T
CISCO 776
1
0B
A
SE
T
ISDN U
N
OD
E
HU
B
Telephone
RJ-11 telephone cable