ATCOM AT530 User Manual page 47

AT530 User Manual
5. if VLAN is disable. Device won't add any vlan ID to the stream. In this case, if the
Diffserv is enable, the DiffServ value response to the voice/signaling stream.
6. When VLAN function is enable. If "VLAN ID check" is enable, AT530 will have strict
requirement on the VLAN, it won't handle any packets with different VLAN ID. If
"VLAN ID check" is disable, AT530 will handle the packets even from different vlan ID.
Please notice that VLAN ID check is enable in default.
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