Panasonic KX-T336 System Reference Manual page 227

Conditions
(1) Appearance of the call indication in case 2
If more than one outside call (via CO lines of the same trunk group)
comes in under the following situation. the seCOnd call will appear on
the next GCO button of
the
same extension.
(Example)
Trunk Group 01
CO Lines
CO Line
1011
CO Line 1012
Direct Termination
Ext. 100
Incoming Mode (Day):
DIL 1: 1
CO Line 1013
CO Line 1014
Ext. 101
1. GCO-01 is in use at Ext.1 00.
2. Indication of the call which comes in on Ext.1 00 via a CO line of
Trunk Group 01 appears on another GCO of Ext.100.'
1.
2
El
I
L
GCO-01
GCO-01
GCO-01
c3co-01
GCO-01
GCO-01
Ext. 100
Ext.1
00
* In case 1 (Old version), the indication of this call does not appear until
GCO-01 on the Ext.100 becomes available.
3-D-l 7-5
(30393)