发布日期:2020-04-11
A.79xx IP phones do not automatically mark voice packets with non-zero DSCP values.
B.79xx IP phones do not mark protocol packets such as DHCP, DNS, or TFTP with non-zero DSCP values.
C.79xx IP phones do not mark voice packets with optimal DSCP values.
D.79xx IP phones use a custom protocol to communicate CDP information to the switch.
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