7
•
Put your current call on hold and answer the incoming call - after hearing the call waiting
indicator tone, press and immediately release the flash hook button on your telephone.
•
Put your current call on hold and switch to another call - press and immediately release the
flash hook button on your telephone.
•
Hang up your current call before answering the incoming call – hang up the phone and wait
for the phone to ring. Then answer the incoming call.
•
Hang up on the current active call and switch back to the other call – hang up the phone and
wait for the phone to ring. Then pick up the phone to return to the other call.
4.2.2.3.2 Why Call Waiting not Work as You Expected
1. An incoming caller will receive a busy signal if:
•
you have two calls (one active and one on hold; or both actives by using Three Way
Calling) on the Directory (Phone) number the incoming caller is attempting to reach.
•
you are dialing out by using the Directory (Phone) number the incoming caller is
attempting to reach, but have not yet established a connection.
2. If no action is taken (call waiting indicator tone is ignored) to pickup the call, the call waiting
tones will disappear after about 20 seconds.
3. There exists a rollover call. Please take a look of
Call Rollover Support
section for detailed
information.
An application note for Northern American Call Waiting examples is included in Appendix A
4.2.2.4 Call Rollover Support
In the previous releases, Prestige did not support Call Roller. Prestige supports this feature in
v1.50. Unfortunately, this feature is switch dependent. Call Rollover Works only if the Switch
Type is AT&T NI-1.
4.2.2.4.1 Incoming Call Rollover
If the Directory (Phone) number, DN-1, associated to POTS port 1 is used by a data call (it might
be another analog call to POTS port 2 even though it is really rare), the incoming analog call
intended to DN-1 will be routed to POTS port 1. It is called incoming analog call rollover. None of
the advanced ISDN features works for this incoming analog rollover call.
If the Directory (Phone) number, DN-1, associated to POTS port 1 is used by an analog call, the
incoming data call intended to DN-1 will be answered. It is called incoming data call rollover. The
advanced ISDN features do not work on the analog call if there is an incoming data rollover call
at the same time.
4.2.2.4.2 Outgoing Call Rollover
For outgoing data call, there is no problem for Prestige to pick the unused Directory (Phone)
number to place the call. So, there is no outgoing data rollover call problem. It is different for the
outgoing call initiated by the POTS port.
If the Directory (Phone) number, DN-1, associated to POTS port 1 is used by a data call,
Prestige will use DN-2 as the caller number to place the call from POTS port 1. It is called
outgoing voice call rollover. Call Waiting does not work in this case even though other advanced
ISDN features work fine.