Cisco Cisco VN 2900 Network Adaptation Interface Installation Guide
2
Connecting Cisco Serial High-Speed WAN Interface Cards on Cisco 1861 Integrated Services Routers
OL-14872-01
Serial High-Speed WAN Interface Cards
1- and 2-Port Serial HWICs
The 1-port serial HWIC (HWIC-1SER), shown in
, and the 2-port serial HWIC (HWIC-2SER),
shown in
, provide an EIA/TIA-232, EIA/TIA-449, V.35, X.21, data terminal equipment/data
communications equipment (DTE/DCE), EIA-530 DTE, or nonreturn to zero/nonreturn to zero inverted
(NRZ/NRZI) serial interface to a Cisco modular router.
(NRZ/NRZI) serial interface to a Cisco modular router.
Figure 1
1-Port WAN Serial HWIC Front Panel
Figure 2
2-Port WAN Serial HWIC Front Panel
Serial WAN Interface Card LEDs
Each serial HWIC has one LED, labeled CONN, which lights when one or both serial ports are
connected. When the port is in DTE mode, the CONN LED indicates that Data Send Ready (DSR), Data
Carrier Detect (DCD), and Clear To Send (CTS) signals have been detected. When the port is in DCE
mode, it indicates that Data Terminal Ready (DTR) and Ready To Send (RTS) signals have been
detected. The functions of the LEDs are described in
connected. When the port is in DTE mode, the CONN LED indicates that Data Send Ready (DSR), Data
Carrier Detect (DCD), and Clear To Send (CTS) signals have been detected. When the port is in DCE
mode, it indicates that Data Terminal Ready (DTR) and Ready To Send (RTS) signals have been
detected. The functions of the LEDs are described in
.
1
Serial port
2
CONN LED
CONN
HWIC-1SER
232044
S0
1
2
1
Serial ports
2
CONN LED
CONN
HWIC-2SER
232045
S1
S0
1
1
2
Table 1
Serial HWIC LEDs
LED status
Description
Green
Monitored ports are active (have initialized without error).
Yellow
At least one monitored port is in loopback mode.
Off
Monitored ports are not active or have failed to initialize.