NEC SL2100 - 4.5.4 Transferring a Call to the Other Extension; 4.6 For More Convenient Use...; 4.6.1 Do Not Disturb (DND)

ISSUE 4.0 SL2100
SYSTEM CAPACITY 35
3.2.2 Expandability of Trunk and Extension (with PRT)
Figure 1-4 Expandability of Trunk and Extension (with PRI)