While this might be true that there are not actually any IP Phones connected directly to 5900, but doing core switch duties, all satellite switches (HP 2920) connect to it. As so does Voice router itself on one of the ports
Hence we want to do more than just Vlan tagging.
We want to make sure that QoS policies are trusted etc, queues are set correctly, uplink ports are marked as voice-vlan ? etc
Nice writetup is here:
https://wantegrity.wordpress.com/2015/01/19/hp-networking-comware-switches-and-cisco-ip-telephones-part-2/
but I am still trying to "translate" it to Comware 7 on 5900
Also there is Voice VLAN Configuration (for 5820, did not find anything specific to 5900) here (ofcourse!? some commands are changed in current Comware 7 version!)
And some commands from above simply give an error:
In auto voice VLAN mode, voice VLAN can't be enabled on a trunk or a hybrid port that is already in a voice VLAN.
Seb