ASCOM Ascotel 2025 System Manual page 490

ascom Ascotel 2025/2045/2065
Digital Network Interface with DDI Number to Subscriber and KT and sub-
scriber + KT busy
A
Subscriber
B
PBX
Key telephones
haz0220aaend0
C
Fig. 2.163: DDI number to subscriber + KT and subscriber + KT busy
• B makes a call diversion to C.
• A calls B, PBX sets up direct connection with C, C rings.
• The KT terminals with the line key also ring.
• If KT line is busy and C is busy, A obtains the busy tone.
• If C is busy, the KT line will ring. A obtains ring-back tone.
HBT_20321104_02/B0_en Features 2.313