Need help. We have two 3300mx controllers in different locations connected via metro eth. they were both version 6.1. This week we upgrade system "a", whitch is the primary controller to 9.0. The next day the hard drive crashed, we replaced and restored to 9.0. System "b" makes calls across metro and route out on pri at sys. a. everything is working except DTMF from system b on outside calls. works fine to access vm. reset both systems. all phones are IP. system b still at 6.1. any ideas?