The load balancer would need to be "SIP aware" or overwrite the SIP headers to be the virtual IP address.
More generically, I'm not sure why you need a load balancer here. Configuring a circular route group with two SIP trunks in it will load balance just fine. If you configure SIP options ping (CUCM 8.5+) in the SIP Profile of the SIP Trunks it will automatically take the trunk out of service when the destination stops responding properly as well. Without that you could just adjust the timeout and retry for INVITEs in the SIP profile to lessen the delay during a failure.
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...