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Cisco 827 and SOHO 77 Routers Hardware Installation Guide
78-6854-03
Chapter 2 Installation
Installing the Router
Connect an Analog Telephone or Fax Machine
(Cisco 827-4V Routers Only)
You can connect as many as four devices such as analog push button telephones or fax machines to a
Cisco 827-4V router. Each device is connected to basic telephone services through the color-coded gray
phone ports.
To connect an analog telephone or fax machine, follow the steps in Figure 2-6. You must provide the
telephone cable for connecting each device. The telephone cable is usually provided with the device.
Figure 2-6 Connecting an Analog Telephone or Fax Machine
Warning
This equipment contains a ring signal generator (ringer), which is a source of hazardous voltage. Do
not touch theRJ-11 (phone) portwires (conductors), theconductors of acable connected tothe RJ-11
port, or the associated circuit-board whenthe ringer is active. Theringer is activated (indicated by a
clicking sound) by an incoming call.
Caution Do not connect the router telephone ports to the telephone wall jack. These ports are not meant for direct
connection to a public network. This connection can damage your router.
The gray phone ports are RJ-11 connectors. If you are outside North America, you must buy and attach
adapters that allow telephones or fax machines to be connected to these RJ-11 connectors. In some
countries, these adapters need additional electronics so that the telephones or fax machines will work
properly with the router phone ports. For example, in the United Kingdom, you must buy an adapter that
also provides a master socket, which causes incoming calls to ring the connected devices. For
information on recommended master sockets, see Table 2-4.
ETHERNET
TO HUB
TO PC
+5,+12,-12,-24,-71 VDC
1
CONSOLE
Model Cisco 827-4V
ADSL
PHONE
21
43
1. Connect telephone cable to
gray PHONE port 1, 2, 3, or 4.
If you are connecting only one
device, use PHONE port 1.
2. Connect other end of
cable to telephone or
fax machine.
Analog telephone
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