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New Features in Release 2.3
RN-001029-02, Release 2.3, Rev 00 33
SIP IP Phone Models 9143i, 9480i, 9480i CT and 5i Series Phones Release Note 2.3
Receiving RTP
When a phone receives a request for receiving RTP:
• if there is an existing audio path, (handset, headset, or speakerphone), the phone uses it to play
the incoming RTP stream on top of the existing one.
• if the phone is already in a 3-way conference, the request is declined.
• if there is no existing audio path, the phone creates a new one (speakerphone) to play the
incoming RTP stream
The following scenarios assume that a request for receiving mixed RTP is initiated.
Phone State Action When RTP Receiving
Phone is in idle state. The phone initiates a new RTP session on
the paging line and the paging line displays.
There is an existing voice call on the
phone.
The phone starts playing the incoming RTP
stream on top of the existing call. Paging
line does not display.
The phone is in conference. The request for receiving RTP is declined.
The phone is not in conference;
however, both voice and conference
streams are busy (cordless handset).
The request for receiving RTP is declined.
The phone is in a call using the
conference stream and the voice
stream is free.
Incoming RTP stream is played on top of
the existing voice stream. Paging line does
not display.
The active voice call is dropped. (RTP
stream was being played on top of this
voice call).
RTP stream is dropped.
A new call comes in while an active
voice call is put on hold. (RTP stream
was being played on top of this voice
call).
RTP mixed stream is played on top of the
currently active call.
The active voice call is dropped RTP stream is dropped.
Note: When RTP stream is being received with RTP recording and
simultaneous playing (mix), you can use the volume controls on the IP
phone to adjust the volume (increase or decrease) to your specifications.