We were about to order
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VWIC2-1MFT-G703, i heard rumors regarding its satbility, did some research and found a release note, im not sure if it was resolved latter, i want to ask experts if they faced any issues with this card whether using voice or data.
A Cisco 2600 series router running Cisco IOS Release 12.2(3.4)T using Voice/WAN interface cards (VWICs)-VWIC-2MFT-G703 or VWIC-1MFT-G703 only-in unframed E1 mode may experience large numbers of line errors. There is no workaround.