Question about switchport voice vlan command
Ok...Reading through both the previous BCMSN Exam cert guide, and it's near duplicate SWITCH Exam cert guide, there is a conflict between the information provided for the "switchport voice vlan untagged" command. Table 14-3 states that CoS bits are NOT set on the voice packets. But Figure 14-2, which displays each trunking mode with this command, shows that CoS bits ARE set. I've looked around the DocCD, can't find anything definitive. I also have the SWITCH Foundation guide, but it only speaks to the "switchport voice vlan vlan-id" command, not the untagged.
So....with that said, does "switchport voice vlan untagged" actually set CoS bits or not? I'd like to know, so I can fix my book, because otherwise it's a great picture of what's going on. Thanks in advance.