Cisco 851 - Page 64

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
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
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



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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–123(11)T
2811, 2821, and 2851–
123(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
V35, X21, 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–123(11)T
2811, 2821, and 2851–
123(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–123(11)T Requires at least one WIC
or VWIC
Supports all current WICs
and VWICs

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
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



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
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–123(11)T No reliance on other
network modules, WICs,
voice interface cards,
or advanced integration
modules
Supports all current WICs
and VWICs