Can you post up your current router configurations?
Do you also have Cisco switches, and have you configured or enabled QoS on these?
Also specify what VoIP system you are using?
Basically you will need to create a simple class-map to match your voice/RTP streams (this might be a simple match EF, or perhaps an ACL) then put this in a policy-map to priorise it. The specifics of this will depend on the information I've requested above...
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Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.