NEC NEAX 2400 IPX Programming Manual page 267

4. Both stations A and B hang up (i.e. Station B becomes idle); Station C rings.
Station A
Station B
5. Station C answers and receives Ring Back Tone; Station B rings.
Station A
Station B
6. Station B answers; Station B and Station C are connected.
Station A
Station B
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 canceling CCBS; Station A hears Service 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.
CALL COMPLETION TO BUSY SUBSCRIBER (CCBS)
Q-SIG/
IS-11572
[Node A] [Node B]
RG
RBT
Q-SIG/
IS-11572
[Node A] [Node B]
Q-SIG/
IS-11572
[Node A] [Node B]
NDA-24305
RG
Q-SIG/
IS-11572
Station C
[Node C]
Q-SIG/
IS-11572
Station C
[Node C]
Q-SIG/
IS-11572
Station C
[Node C]
CHAPTER 6
Page 249
Revision 1.0