NEC UNIVERGE SV9100 Manual page 119

call.
A Doorphone call cannot be answered as a second call. To answer the Doorphone the first call
must be cleared then wait for the Doorphone call to ring the IP DECT handset and answer as
normal.
If there are no DSP's available when a user sends a second call to an IP DECT user Call Waiting
is not possible and the caller will hear busy tone.
When an IP DECT user is talking to the second call with the first call on hold, if the second call is
cleared the first call will then recall to the IP DECT user as a new call.
It is not possible to send Call Waiting indication to an IP DECT handset if the first call is either a
Doorphone or Voicemail.
Programming
The Call Waiting feature needs to be allowed by Class of Service programming on a called extension
basis.
To enable SIP Call Waiting on a per CoS basis, use the 'Call Waiting for standard SIP Terminal' option in
Easy Edit– Advanced Items/IP DECT/IP DECT Features/IP DECT COS Features. (PRG20-13-54)
Apply the relevant CoS to each extension in Easy Edit–
Per Mode. (PRG20-06)
The calling extension also needs to be able to send a Call Waiting event to the IP DECT extensions. This is
done by allowing 'Intercom Off-hook Signalling' or 'Automatic Off-hook Signalling' by Class of Service in
Easy Edit – COS. (PRG20-13-05/06)
The CoS is applied to the extension in Easy Edit-
Service Per Night Mode. (PRG20-06)
If Automatic Off-hook Signalling is used then the calling party will not hear busy tone, Call Waiting is
automatically sent.
If Intercom Off-hook Signalling is used then the calling party will hear busy tone and they will have to use
the Override function (SC809 or Function Key 33) to send Call Waiting.
To allow Call Waiting from a trunk 'Call Queuing' or 'Second Call for DDI/DISA/DIL/E&M' may be required
in Easy Edit – COS. (PRG20-09-01/07)
Programming of the IP DECT system is also required.
In the DAP Configurator go to the 'SIP Settings' tab and change the 'multiple_call_appearance' option to
'=yes'.
It is also possible to alter what appears on the display of the IP DECT handset during a Call Waiting event.
Chose the 'call_waiting_indication' option to the required text. Beware that if this text is too long the
extension name that is waiting may not fit on the display at the same time. It is recommended to leave this
setting at its default value of 'waiting'.
Operation
When a Call Waiting event is sent to an IP DECT handset the IP DECT user will hear a tone in the earpiece
and some text on the display including the calling party information.
To hang up the first call and answer the Call Waiting:
1. Press the red 'Hang Up' key – this clears the first call
2. Wait for the second call to ring the handset
3. Answer the ringing second call by pressing the green 'Answer' button
4. Talk to the calling party
To hold the first call and answer the Call Waiting:
1. Press the * key – this holds the first and answers the second
2. Talk to the calling party
3. The first call will then indicate as a Call Waiting
4. Toggle between the callers by pressing the * key
If the IP DECT user doesn't answer the Call Waiting the tone will stop and the display will return to show
the information of the first call.
Part 2: VoIP Manual
Advanced Items/IP DECT/IP DECT Features/COS
Extensions/Extension/Extension Properties/Class of
119