Datasheet

3-5
Cisco Interface Card Hardware Installation Guide
OL-1919-18
Chapter 3 Connecting Serial Interface Cards to a Network
Serial High Speed WICs (HWICs)
Figure 3-5 Connecting the Serial WAN Port to a Modem or DSU/CSU
Step 6 Turn on power to the router by pressing the power switch to the ON ( | ) position.
On the Cisco MWR 1941-DC router, turn on power to the router by turning ON the DC power source at
the circuit breaker.
Step 7 Check that the CONN LED goes on, which indicates that the card’s serial port detects the WAN serial
connection.
Serial High Speed WICs (HWICs)
There are five Cisco serial high speed WICs (HWICs). This section describes the HWICs and tells how
to connect them to a network. It contains the following subsections:
• 4-Port Multiprotocol High Speed HWIC, page 3-6
• 4-Port Multiprotocol Low Speed Asynchronous/Synchronous HWIC, page 3-6
• 8-Port RS-232 Asynchronous/Synchronous HWIC, page 3-7
• 8-Port Asynchronous HWIC, page 3-7
• 16-Port Asynchronous HWIC, page 3-8
• LED Status, page 3-8
• Types of Cables for Serial HWICs, page 3-9
• Connecting Serial HWICs to the Network, page 3-11
SERIAL
Serial transition
cable
DSU/CSU or
other DCE
EIA/TIA-232, EIA/TIA-449, V.35,
X.21, or EIA-530 connector
41189
Synchronous serial
port (DB-60)
CONN LED
CONN