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Fast Ethernet Interfaces
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Fast Ethernet Interfaces
The MWR 1900 router has two fixed LAN ports offering 10/100 Base-T Ethernet attachment. The ports
are fully compliant with the IEEE 802.3 and 802.3U standards and integrate the media access control
(MAC) functions and a dual-speed MII interface. Both ports can operate in half- or full-duplex mode and
can run independently of one another. For each FE interface, there are two green LEDs, one for Link
Integrity and one for Link Activity.
Voice/WAN Interface Cards
The Cisco VWIC-2MFT-T1-DIR and VWIC-2MFT-E1-DIR Voice/WAN Interface Cards support data
applications on the Cisco MWR 1900 Mobile Wireless Edge Router for T1/E1 networks. These cards are
dual-port, T1/Fractional T1 or E1/Fractional E1, Drop and Insert Multiplexers with integrated T1
CSU/DSUs or E1 DSUs. The T1 version supports framed and unframed traffic, and the E1 version
supports framed traffic and unframed traffic that conforms to the ITU-T G.703 standard for full 2.048
Mbps bandwidth.
The Drop and Insert multiplexer diverts (drops) streams of an aggregate Time Division Multiplexed
(TDM) traffic stream, and introduces (inserts) different streams for transmission in the time slots that
were previously occupied by the dropped streams. Each VWIC supports a limited channelized capability
where the T1 or E1 can be flexibly split into two fractional channel groups, one on each port or two on
one port. The switching operation can be maintained through router restarts and reloads of Cisco IOS
software.
Each card also features protection switch solid state relays on the line interfaces, which together with
redundancy logic and relay control added to the base Cisco IOS feature set on the MWR 1900, provides
T1/E1 Protection Switching between redundant routers.
The MWR 1900 router provides two WAN interface slots, which allows support for 4 T1/E1s. A third
WAN interface slot is reserved for future use.
Additional information is contained in separate publications that accompanied your router package.
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These manuals are on Cisco.com. See "Obtaining Documentation" for more information.
Cisco MWR 1900 Mobile Wireless Edge Router Hardware Installation Guide
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Redundancy support via a two T1/E1 WIC capable of port switching ON/OFF via relays
Console RS-232 port
Auxiliary Serial Port with hardware flow control
Extended operational temperature range from -10ºC to + 55ºC with over-temperature sensor
Front (connector side) to rear airflow using four 40mm, 10 CFM exhaust fans
Custom +27V DC input power
Three green chassis LEDs for Power (PS is operational), System Ready (software is up and running),
and Activity (interrupts/packet transfers running)
One Network Module slot (for future use)
For information on Voice/WAN interface cards (VWICs), see the publication VWIC-2MFT-T1DIR,
VWIC-2MFT-E1DIR Installation Instructions.
For software configuration information, see the publication Cisco MWR 1900 Software
Configuration Guide.
Chapter 1
Overview of the Cisco MWR 1900 Router
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Troubleshooting
