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Offhook phone 2
Phone
1
--
Caller get busy tone
--
Phone
2
Ring /
Dial tone
--
Call waiting tone
(2) OTHER SWITCH TYPE:
CASE 1: An incoming voice call to the DN that’s been used by a data connection can not be
rolled over, and therefore, the caller will hear busy tone.
Action 1
Action 2
Action 3
Call to DN1
Call to DN2 /
Offhook phone 2
Call to DN2
Phone
1
Busy tone
--
--
Phone
2
--
Ring /
Dial tone
Call waiting tone
CASE 2: Offhook phone 1, which the DN is used by the data connection, user can dial out. At
this moment, the call is rollover. Therefore, user will not get call waiting tone on phone 1 when a
voice call comes into phone 1 when a rollover call occurs, and the caller will get busy tone.
Action 1
Action 2
Action 3
Offhook phone 1
Call to DN1
Call to DN2 /
Offhook phone 2
Phone
1
Dial tone
Caller get busy tone
--
Phone
2
--
--
Caller get busy tone
/ Busy tone
4.
Data outcall to ISP when one of the Phone is in use
In this case, no call is rollover. Therefore, any incoming voice call to the phone that’s in used, user
should be able to hear the call waiting tone and use single flash to answer the call.
(1)
Phone 1 (DN1) is used to connect to “peer”, and then a data call is triggered to ISP (DN2).