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NDA-24305 CHAPTER 6
Page 273
Revision 1.0
CALL TRANSFER SUPPLEMENTARY SERVICE (SS-CT) WITH REROUTING
Rerouting Function
1. Rerouting function is available when:
(a) SS-CT service is available.
(b) Bearer Capability information of speech or 3.1 kHz audio is available for rerouting function
(Unrestricted digital data cannot be forwarded and the line is disconnected).
(c) Transmission speed rate is 64 kbps.
(d) The calling party, the called party, and the destination station are D
term
or analog station.
(e) Another service is activated on the calling party, the called party, and the destination station.
2. Rerouting function is also available for the call in the example below.
3. When interworking through FCCS link, rerouting function is activated with no restriction.
4. When station-to-station connection is established between a calling party and a called party, the called party
and a forwarded party, rerouting function is not activated.
5. When rerouting function is not available or the activation is failed, Call Transfer service is activated without
rerouting function.
Calling Station (Station A): Office Code = 80, Station no. = 1000
Called Station (Station B): Office Code = 82, Station no. = 3000
Destination Station (Station C): Office Code = 83, Station no. = 4000
C.T. is set to “83-4000”
: Q-SIG/IS-11572
: ACIS/CCIS
[routing selection data to Office Ò83Ó]
1
st
choice RT is RT1
2
nd
choice RT is RT2
Station B
3000
82
Station A
1000
80
81
RT2
RT1
Station C
3000
83
1) Station A originates a call to Station B through Office “81”.
(the call is routed to Station B through ACIS/CCIS and Q-SIG/IS-11572 line)
2) Station B transfer the call from Station A to Station C, Station B is released from the connection.
3) New line from Office “81” to “83” is established for the call (RT1 is the first choice routing from Office “81”
to “83”). Rerouted line connection is Office “80” → Office “81” → Office “83”
Note:
ACIS/CCIS line (Office “80” to “81”) is not reestablished and Station C's number is not displayed on
the LCD of Station A belonging to Office “80”.