Panasonic KX-T336 System Reference Manual page 184

(2) Conditions for setting trunk groups
If a trunk group changes "Group-Trunk Group", Type assigned to "PVL" (Private
Line) to another type and if any CO lines belonging to the trunk group are
selected to be "PRV-CO" (Private CO) in "Extension-Station, Type/Number,
those CO lines are canceled from "Extension-Station", Type/Number automati-
cally.
2. Single CO, Group CO setting
If "Single CO" or "Group CO" is selected in "Extension-Station", Type,
(1) Conditions of assigning DN buttons
l
The designated CO line is assigned to a trunk group in ITTrunk-CO Line",
Trunk Group.
The trunk group should have "Group-Trunk Group", Type assigned to "DDD"
or 'FEX" or "WATS" or "PBX."
(2) Conditions of setting 'Incoming Mode (Day)"
1) If "Incoming Mode (Day)" is changed from "DIL 1 :l" to another mode,
The trunk group changed to another mode in "Group-Trunk Group", Incoming
Mode (Day) is assigned in "Trunk-CO Line", Trunk Group. The "Trunk-CO
Line", Direct Termination setting is canceled.
2) If "Incoming Mode (Day)" is changed from 'DIL 1 :N" to another mode,
"Group-Trunk Group", Destination (DIL 1: N only) setting is canceled.
(3) Conditions of setting "CO Appearance Type" - This setting is not valid.
Refer to Section 3-D-2.10 "Flexible SCO/GCO Assignment" for further
information.
(4)
Condiiions of setting Type"
Changing "Type" to 'PVL" (Private Line) from any other modes cancels "Single
CO" or "Group COnassigned to a DN button of an-extension belonging to this.=:,
trunk group in "Extension-Station", Type.
It is impossible to change from 'DID" to any other modes or from any other
modes to 'DID," if any CO line in "Trunk-CO Line" belongs to the "Group-Trunk
Group."
9-E-6
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