IP Telephony and Phones

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HI all,I have purchase a UCCX 9.0. However my customer want to downgrade to CCX 8.5. So, is there any method I can do the downgrade without ordering other license ?Thanks a lotLeung Che Man                  

cm6043 by Level 1
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Hi, allI wanted to tell you that I have a problem In one branch office several of our phones 79XX, like the 15% of them, stops working after a second try to make a call (off hook state). They sudenly stoped working, when you try to hang-off the phone...

I am trying to configure my E1 interface in the 3951 voice gateway router but the link is not coming up. I noticed occassionally that i saw "multiple frames established" in the show isdn status but that goes away in less than a minute. Most of the ti...