5.3
5.4
.......................................................................................................39
5.5
5.6
5.6.1
Blind Transfer ......................................................................................39
5.6.2
Attended Transfer.................................................................................39
5.7
5.8
6
ATTACHMENT .................................................................................................41
6.1
6.2
(
..........................................................................................39
.........................................................................................39
.................................................................................................40
...................................................................41
.......................................................................43
3
/
/
) .................38