4-Port Serial Network Module
Cisco Network Modules Hardware Installation Guide
6-12
Figure 6-5
Connecting a 4-Port Serial Module to a CSU/DSU
4-Port Serial Network Module LEDs
All network modules have an enable (EN) LED. This LED indicates that the module has
passed its self-tests and is available to the router.
Each port on the 4-port serial network module also has the additional LEDs shown in
Figure 6-6 and described in Table 6-6.
H9598
CN/LP RXC
SERIAL 3
SERIAL 2
SERIAL 1
SERIAL 0
RXD
TXC
TXD
CN/LP RXC RXD TXC TXD
CN/LP RXC RXD TXC TXD
CN/LP RXC RXD TXC TXD
EN
Serial transition
cable
CSU/DSU or
other DCE
EIA/TIA-232, EIA/TIA-449, V.35,
X.21, or EIA-530 connector
Serial port (DB-60)
SERIAL
4T
Summary of Contents for 2600 Series
Page 38: ...1 Port Fast Ethernet Module Cisco Network Modules Hardware Installation Guide 4 8 ...
Page 102: ...Voice Network Module LEDs Cisco Network Modules Hardware Installation Guide 9 4 ...
Page 126: ...Analog Modem Network Module LEDs Cisco Network Modules Hardware Installation Guide 11 8 ...
Page 136: ...HSSI Network Module LEDs Cisco Network Modules Hardware Installation Guide 13 6 ...
Page 140: ...Compression Network Module LEDs Cisco Network Modules Hardware Installation Guide 14 4 ...
Page 142: ...Cisco Network Modules Hardware Installation Guide A 2 ...