The gatekeeper sits in the middle of a network with many PBXs, but is showing this behaviour only when handling a call between a Nortel BCM400 and another PBX (a second Nortel BCM400 or an Avaya). The PBXs are attached directly to the nework, with an IP Network Adapter.
If anyone stumbles upon this thread. I found the reason. It turned out to be that the Nortel BCM400 did not support the IRQ (Information Requests) that the Gatekeeper sends to try to get information on an active call (when the participating gateway does not update the call info itself.)
As the PBX does not support this message, the gatekeeper sent a DRQ to Nortel after 3 unsuccesful IRQ attemps (12 minutes), that then complied and dropped the calls.
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...
This document describe how DST changes and how time changes are
implemented in DST. Daylight Saving Time (DST) is the practice of
setting the clocks forward 1 hour from standard time during the summer
months, and back again in the fall, in order to make b...