Panasonic KX-TDA600

1.4.3 System Capacity
Number of Free Slots
The PBX supports the following number of free slots for optional service cards.
Basic System 2-shelf System 3-shelf System 4-shelf System
10 21 32 43
Maximum Trunk and Extension
The PBX supports the following number of trunks and extensions.
Type Basic System
2-shelf
System
3-shelf
System
4-shelf
System
Trunk 160 320 480 640
Extension PT 256 512 640
*1
640
*1
SLT 240 480 720 960
PT + SLT 304 608 880 1120
*1
The maximum number of PTs in the whole system is limited to 640.
Maximum Optional Service Cards
There are 2 types of optional service cards for installation:
• Cards installed in the slots of the PBX
• Cards mounted on other optional service cards
Note
• Any card that exceeds the capacity of the PBX will be ignored.
• When the PBX starts up with an invalid configuration, some cards will be ignored.
36 Installation Manual
1.4.3 System Capacity