Cisco Systems MWR 1900 Installation Manual download pdf (Page 14)

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Cisco MWR 1900 Mobile Wireless Edge Router Hardware Installation Guide

78-13982-02

Chapter 1 Overview of the Cisco MWR 1900 Router

Fast Ethernet Interfaces

• 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)

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.

• 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.

These manuals are on Cisco.com. See “Obtaining Documentation” for more information.

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