IP Telephony and Phones

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We have a remote office. Recently, when calling this office with the SX20, its connecting with audio only.  This had previously worked before but we dont know whats changed.  Calling the same remote office from a C40 in the same office as the SX20 wo...

We currently seem to be experiencing issues with the clock that is displayed on the 8945.   If I access the phone's web page, it shows the correct time. But on the phone's display it will be off from 10 to 15 minutes.  If I reset the phone, it syncs ...

Hi, Anybody knows why there is  no recommended version for CME that apply to new version (at least 8.6)      which version should I install  8.6 or new 9.1 ??regards             Cisco Unified CME and Cisco IOS Software Version Compatibility MatrixRev...

Hi,Newbei here Is there any tool, metod or formula to calculate the required server configuration for UC Applications. For example, I have to run CUCM 8.5 and CCX 8.5 and Cisco Unity Connection on Cisco UCS, now how do I know which application is goi...