We want to deploy a remote site in London UK where the head office is in Toronto CA. The customer wants to have Extension Mobility enabled. Then this will be available only on CME 4.2. But right now the supported IOS is 12.4(11)XW version which I not so comfortable for a site out of the contry of the head office. So I prefer using CME 4.1 for them based on IOS 12.4(15)T.
Is there anyone deployed CME 4.2 and not so many issues?