The native network (untagged network) on the switch port is for the phone network (VLAN 118). It is tagged with all other networks (for testing). When I configure the “PC Port VLAN Tag” on the phone with any other VLAN, it picks up the expected IP address from the DHCP server. But when I enter a 1 in “PC Port VLAN Tag” it picks up an IP address from VLAN 118.
I tested this on a GXP2140 and it worked correctly, but not on this GRP2615.
The GRP2615 is on firmware 1.0.5.67. I tried to upgrade it to the latest (1.0.7.33) but it fails for some reason.