Cisco Cisco IOS Software Releases 12.2 MC

With Cisco IOS Release 12.2(15)MC1a, the MWR 1941-DC router supports the following Cisco 
network modules and interface cards:

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

: 

WIC-2A/S(=) 

Alarm Interface Card—NM-AIC-64(=)

16-port Ethernet Switch—NM-16ESW(=) 

When using the NM-16ESW with the MWR 1941-DC router, shielded cables are required 
and IP phone inline power is not supported.

Asynchronous

16-port Asynchronous Serial—NM-16A(=)

32-port Asynchronous Serial—NM-32A(=)

4-port Asynchronous/Synchronous Serial: NM-4A/S(=)

8-port Asynchronous/Synchronous Serial: NM-8A/S(=)

1-port T3/E3: NM-1T3/E3(=)

The Cisco MWR 1941-DC router does not support online insertion and removal (OIR) of WAN interface 
cards. Any attempt to perform OIR on a card in a powered up router might cause damage to the card.

The Cisco MWR 1941-DC router does not support online insertion and removal (OIR) of network 
modules. Any attempt to perform OIR on a card in a powered up router might cause damage to the card.

Removing the compact flash from the Cisco MWR 1941-DC router during a read/write operation might 
corrupt the contents of the compact flash, rendering it useless. To recover from an accidental removal of 
or corruption to the compact flash, a maintenance spare with the appropriate bootable Cisco IOS 
software image might be needed.

When using the 1-port T3/E3 network module in your MWR 1941-DC router configuration, note that E3 
mode is not supported with Cisco IOS Release 12.2(15)MC1a.