NEC NDA-24305 - page 267

NDA-24305 CHAPTER 6
Page 249
Revision 1.0
CALL COMPLETION TO BUSY SUBSCRIBER (CCBS)
4. Both stations A and B hang up (i.e. Station B becomes idle); Station C rings.
5. Station C answers and receives Ring Back Tone; Station B rings.
6. Station B answers; Station B and Sta tio n C are connected.
To cancel CCBS:
1. Station A lifts the handset while the CCBS service is set; Station A hears Dial Tone.
2. Station A dials the access code or presses the function key for cance ling CCBS; Sta tion A hears S ervice Set
Tone .
3. Station A replaces the handset.
Note: Operating procedure varies depending on the specifications of the station since ETS 300 306/IS-13870
protocol does not regulate.
[Node A] [Node B] [Node C]
Q-SIG/ Q-SIG/
RG
Station A
Station B
Station C
IS-11572 IS-11572
Station C
[Node A] [Node B] [Node C]
Q-SIG/ Q-SIG/
RBT
Station A
Station B
RG
IS-11572 IS-11572
Station C
Station B
[Node A] [Node B] [Node C]
Q-SIG/ Q-SIG/
Station A
IS-11572 IS-11572