Nortel 1110 Fundamentals page 453

During manual configuration, if DATA VLAN is enabled by configuring a
VLAN ID, the PC-Port Untag All check box is selected and is enabled by
default. By default, the egress tag is stripped. To manually override this
setting and disable egress stripping, clear the PC-Port Untag All check box.
If DATA VLAN is not enabled during manual configuration, the PC-Port
Untag All check box is not selected. By default, the ingress tag is not
stripped. To manually override this setting and enable ingress stripping,
select the PC-Port Untag All check box.
Copyright © 2003–2007, Nortel Networks
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Nortel Communication Server 1000
IP Phones Fundamentals
NN43001-368 01.02 Standard
Release 5.0 20 June 2007
Enhanced DATA VLAN 453