FYI - I was running into an error upgrading to ESXi 6.5 using the Cisco custom ISO's stating "CONFLICTING_VIBS ERROR". Seems to happen on every Cisco custom 6.5 ISO available through VMware:  To get past this, I had to do the following to the existin...

We recently performed an upgrade from 8.03 to 8.6.2. Soon after, we ran into an issue where one of our sites was receiving inbound calls from the PSTN, but got a fast busy on all outbound PSTN calls. We performed a 'debug isdn q931' on the gateway an...

Just did an update of (140) 7965 phones, and everything went pretty smooth except for 5 phones that got stuck on a messge showing "Ethernet Disconnected". The users power-cycled the phones the next morning when they came in and everything came back u...

This is a general design question, as I don't have the ability to test at the moment. Question is whether or not I would drop all active calls in the scenario where a remote site is using a 29XX gateway with an ISDN PRI for all inbound / outbound cal...