Cisco CISCO776 Installation Guide - Page 44
Connecting the ISDN Line, Step 1, Connecting to the ISDN U Port
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Connecting the ISDN Line To connect an ISDN line to the U port on a router, complete the following steps. Step 1 Connect the red ISDN U cable to the red port labeled ISDN U on the rear panel of your router. Step 2 Connect the other end of the red ISDN U cable to the ISDN wall socket. (See Figure 3-4.) Figure 3-4 Connecting to the ISDN U Port CONFIG 4 3 10BA2 SET CISCO 776 1 ISDN S/T ISDN U S0 NT-1 Connect red cable to red ISDN U port +-350VV------10.5.2AA++/-/-52%5% 17261 Connect red cable to ISDN wall jack RJ-45-to-RJ-11 adapter cable If your wall jack has an RJ-11 connector, attach RJ-45-to-RJ-11 adapter cable to red cable, and then connect RJ-11 connector to ISDN wall jack 3-8 Cisco 700 Series Router Installation Guide
![](/manual_guide/products/cisco-776m-installation-guide-780c93a/44.png)
Connecting the ISDN Line
Cisco 700 Series Router Installation Guide
3-8
To connect an ISDN line to the U port on a router, complete the following steps.
Step 1
Connect the red ISDN U cable to the red port labeled ISDN U on the rear panel
of your router.
Step 2
Connect the other end of the red ISDN U cable to the ISDN wall socket. (See
Figure 3-4.)
Figure 3-4
Connecting to the ISDN U Port
CONFIG
1
+5V ---1.5A +/-5%
-30V--- 0.2A +/-25%
S
0
NT-1
ISDN U
ISDN S/T
10BASET
CISCO 776
2
3
4
Connect red cable
to red ISDN U port
If your wall jack has an RJ-11 connector,
attach RJ-45-to-RJ-11 adapter cable
to red cable, and then connect RJ-11
connector to ISDN wall jack
Connect red
cable to ISDN
wall jack
RJ-45-to-RJ-11
adapter cable
17261