While SIP traffic is on, disable an instance (that is serving as back-end) using
"asadmin disable-converged-lb-server <instance-name>". A few 500 error responses
are observed at the SIP client when disabling the instance. The same behavior is
also observed when enabling the instance.
Discussed this with Bhavani. This issue is related to issue 1944.
The issue was observed when running SSR Subscribe-Refresh Rolling Upgrade System