Fixed Interfaces - Cisco MWR 1941-DC - 1941 Mobile Wireless Router Hardware Installation Manual

Chapter 1 Overview of the Cisco MWR 1941-DC Router
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Fixed Interfaces

The MWR 1941-DC 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 MWR 1941-DC router supports the following Voice/WAN interface cards (VWICs):
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Note The WIC-2A/S is supported by the Cell Site DCN implementation only with Cisco IOS
Release 12.2(15)MC1a and later.
IVWIC-2MFT-T1/E1-DIR
The Cisco VWIC-2MFT-T1-DIR and VWIC-2MFT-E1-DIR VWICs support data applications on the
Cisco MWR 1941-DC 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.
78-15827-06B0
Two fixed LAN 10/100 Base-T Ethernet Ports
Three WIC/VIC expansion slots (third slot supported in Cell Site implementation only)
One network module slot (Cell Site DCN implementation only)
Redundancy support via a two T1/E1 WIC capable of port switching ON/OFF via relays (IP-RAN
implementation only)
Console RS-232 port
Auxiliary Serial Port with hardware flow control
Front (connector side) to rear airflow using four 40mm, 10 CFM exhaust fans
+ 27/-48 VDC (+/- 20 to 60 VDC supply tolerance) universal power supply
Three green chassis LEDs for Power (PS is operational), System Ready (software is up and running),
and Activity (interrupts/packet transfers running)
2-port T1/Fractional T1 Drop and Insert Multiflex Trunk Interface Card: VWIC-2MFT-T1-DIR(=)
2-port E1/Fractional E1 Drop and Insert Multiflex Trunk Interface Card: VWIC-2MFT-E1-DIR(=)
2-port Asynchronous/Synchronous WAN Interface Card
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
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WIC-2A/S(=)
Fixed Interfaces
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