NL1901ACV Enhanced Hybrid 4G LTE Gateway – User Guide
UG01063 v. 1.0 December 2018
Do Not Disturb (DND)
If DND is enabled, all incoming calls are rejected. DND is useful if you do not want others to disturb you. Check
with your VoIP Provider if your service supports DND.
1 Enable DND in the Voice--SIP Advanced Setting page.
2 Pick up the receiver on the phone.
3 Dial
*78 to enable DND.
4 Hook on the phone. Now your phone rejects all incoming calls.
5 Hook off again to disable the DND.
Call Return
For incoming calls, the DSL gateway remembers the number of calling party. Check with your VoIP Provider if your
service supports Call returns. You cannot call return, if the caller has hidden caller ID.
1 Enable Call Return in the Voice--SIP Advanced Setting page.
2 Press
*69 to return a call.
3 Now you can make the call as if you have dialled the whole number.
Call Hold
Call hold enable you to put a call to a pending state, and pick it up in future. Check with your VoIP Provider if your
service supports Call Hold.
1 Assuming you are in a voice connection, you can press
FLASH to hold current call.
2 Now you can call another party, or press
FLASH again to return to first call.
Call Waiting
Call waiting allows third party to call in when you are in a voice connection. Check with your VoIP Provider if your
service supports Call Waiting.
1 Enable Call waiting in the Voice--SIP Advanced Setting page.
2 Pick up the phone attached to the DSL gateway.
3 Assuming you are in a voice connection. When another call comes in, the DSL gateway streams a call waiting
tone to your phone, indicating another call is available.
4 Press
FLASH to switch to this call and the initial call put to hold automatically.
5 Press
FLASH multi-times to switch between these two calls back and forth.
Call Transfer
Call transfer, transfers the current call to a third party blindly, regardless of whether the transfer is successfully or
not. Check with your VoIP Provider if your service supports Call transfer.
1 Assume you have already been in a voice connection.
2 Press
FLASH to hold the first party.
3 Dial
#90 + third party number.
4 Before the third party answering the call, hook on your phone.