Hi Navneet,If this is still outstanding here are some thoughts that came to mind.  You need to create a voice vlan on the switch and leverage the "switchport voice vlan ##" command.  The default gateway of the voice vlan should have an ip-helper stat...

I believe the stack master.  Easy way to confirm is to issue the "show sdm prefer" command on stacks with various amounts of members.  As long as the sdm template is the same you will see the same output.  Also be sure that the master switches are th...