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What is the difference between VWIC-MFT-2E1 and VWIC-2MFT-E1-D1

We suspected an intermitten problem with the VWIC-2MFT-E1 but since we did not have the same card we used a VWIC-2MFT-E1-D1. Unfortunately IOS failed to recognise this card.

We are running c2600-is-mz.122-15.T8.bin

image. What does the D1 indicate. The indicator LED on the card near the RJ45 connector doesn't light and IOS doesn't recognize this card. I am not sure if it is DOA card or may be the IOS needs to upgraded.

Hall of Fame Super Red

Re: What is the difference between VWIC-MFT-2E1 and VWIC-2MFT-E1

Hi Alphonse,

Here is a doc that describes the differences between these 2 cards.It looks like both cards have been supported since the early 12.2x deployment so I don't think that this is the problem. Here is an excerpt:


2-Port RJ-48 Multiflex Trunk-T1


2-Port RJ-48 Multiflex Trunk-T1 With Drop and Insert


Multiplexed Voice/Data Solutions: 2-port T1/E1 Drop and Insert Multiplexer with Integrated DSU/CSU

These 2-port Multiflex VWICs simplify branch office connectivity by enabling a Cisco 2600, 2800, 3600, 3700 or 3800 to consolidate the functions of a router, a fully managed Drop and Insert Multiplexer, and a fully managed DSU/CSU into a single box. Typically a Drop and Insert multiplexer is used for channelized (i.e. Time Division Multiplexing [TDM]) integration of voice and data onto a single T1/fractional T1 or E1/fractional E1 connection to the CO. Sharing a line can significantly reduce costs over that of two separate physical lines to the CO. While the normal use is for voice and data sharing of a T1 or E1 service, the Drop and Insert capability can also be used for video and data, or data and data sharing of the service (e.g. two routers).

From this doc:

Hope this helps!


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