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Cisco Network Modules
Four-port Channelized,
Unchannelized E1/T1
Network Module
Provides four RJ-45
channelized/
unchannelized, framed/
unframed T1/E1 ports for
bit-transparent transport
services
Transport of data streams
that have no format or
structure recognized by
any other router interfaces
(legacy protocols,
encrypted applications, etc)
3800 Series–123(11)T
2811, 2821, and 2851–
123(8)T4
No reliance on other
network modules, WICs,
voice interface cards,
or advanced integration
modules
Four-port Channelized,
Unchannelized E1/T1
Network Module
Provides four Smart Serial
(Cisco 12-in-1) ports for
bit-transparent transport
services Each port may be
V35, X21, RS-422/449,
RS-530, RS-530A, or
RS-232 Each port may
be DCE or DTE supporting
data rates from 200 bps
to 2048 Kbps
Transport of data streams
that have no format or
structure recognized by
any other router interfaces
(legacy protocols, encrypted
applications, etc)
3800 Series–123(11)T
2811, 2821, and 2851–
123(8)T4
No reliance on other
network modules, WICs,
voice interface cards,
or advanced integration
modules
Two-WIC-slot Network
Module
Provides two WIC
expansion slots supporting
all current WICs and
VWICs
Serial and Legacy
Concentration
3800 Series–123(11)T Requires at least one WIC
or VWIC
Supports all current WICs
and VWICs
Cisco Network Modules
One-port 10/100 Ethernet,
One-port 4/16 Token Ring,
Two WIC Slot Network
Module
Provides one full/half
duplex, autosensing
10/100 Ethernet port,
one full/half duplex 4/16
Token Ring port, and two
WIC expansion slots
The 10/100 Ethernet
connection is via an RJ-45
connector The Token Ring
connection is via an STP or
UTP connector
Inter-VLAN Routing
LAN-to-LAN Routing
VPN and Firewall
3800 Series–123(11)T No reliance on other
network modules, WICs,
voice interface cards,
or advanced integration
modules
Supports all current WICs
and VWICs