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Action 1
Action 2
Call to DN2 /
Offhook phone 2
Call to DN1 /
Offhook phone1
Phone
1
--
Caller get busy tone
/ Busy tone
Phone
2
Caller get busy tone
/ Busy tone
--
3.
Data outcall (DN1) to ISP when both phones are onhook (not in use)
Since “
Preferred Phone # for 1st Out Data Call”
is selected as
1
ST
, and both phones are not in
use when the outcall takes place, so the data channel will be using DN1. For incoming voice calls to
DN2, user will hear ring from Phone2. For incoming voice call to DN1, the result will depend on the
switch type. For AT&T NI-1, the call can be ‘rolled over’, so Phone1 will ring and user can answer it.
For other switch type, since the switch can’t do rollover, so the switch won’t accept Prestige use DN2
to answer calls to DN1, the caller will hear busy tone. Below are tables for AT&T NI-1 switch type
and other switch types.
(1) SWITCH TYPE: AT&T NI-1
CASE 1: An incoming voice call to the DN that’s been used by a data connection can be rolled
over and answered.
Action 1
Action 2
Action 3
Call to DN1 /
Offhook phone 1
Call to DN1
Call to DN2 /
Offhook phone 2
Phone
1
Ring /
Dial tone
Caller get busy tone
--
Phone
2
--
--
Caller get busy tone
/ Busy tone
CASE 2: An incoming voice call to the DN that’s not been used by a data connection can be
answered, and furthermore, a second incoming voice call to the phone, user can hear call waiting
tone and use single flash to answer it.
Action 1
Action 2
Action 3
Call to DN2 /
Call to DN1
call to DN2