No, this command will only trust the DSCP values of a physical Cisco phone and not the PC behind it. Traffic from IPC is essentially data traffic. Take a look at the QoS SRND below. See the Campus QoS Design section for example configurations for classification and marking of IPC traffic.
All traffic from the IPC software based endpoint will be classified with the correct DSCP including voice and signalling.
For this reason Cisco recommends configuring the policy map to trust the DSCP marking of incoming traffic and then apply traffic policing and rate limit the amount Voice and Signalling.
The limitation with the 2950 is that policing is only configurable within 1Mpbs intervals which is somewhat excessive and can be used maliciously if the device attached is not IPC endpoint.
In such circumstances it is recommended to do ACL marking and policing at the distibution layer.
If it is possible to re-mark on the 2950 with the correct image, then ensure that your ACLs are granular enough to match signalling and voice media and then set DSCP accordingly rather than trusting the DSCP.
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.