Cue Tone (Dtmf) Splicing Support - Ericsson RX8000 Reference Manual

Using the Equipment
3.17.5

Cue Tone (DTMF) Splicing Support

3.17.5.1 Availability
 = Option
Splice
3.17.5.2 Control

3.17.5.3 Functional Description
Cue (DTMF) Tones are a sequence of audio tones used to encode a character
sequence. This sequence can be used to trigger splicing events. The receiver has
the ability to detect and interpret these tones and sequences and can be configured
to insert SCTE 104 messages into (HD)SDI and/or SCTE 35 messages into the
output transport stream.
To detect the character tone sequence, the audio service containing the tones must
be decoded on an Advanced Audio Decoder device with Cue Tone Detection
enabled.
The character sequence must be configured to be interpreted as a splicing
message. This is setup in the IRD web interface.
The input pre-roll for each tone sequence must be configured to identify the target
splice time. When the SCTE 104 or SCTE 35 packet is inserted on the output the
pre-roll may change due to processing delays. The output pre-roll is recalculated to
maintain the same target splice time.
For Cue Tones splicing configuration the input pre-roll is the time between the end
of the last tone of the Cue Tone sequence and the time of the splice event.
For SCTE 35 insertion in the output transport stream the receiver must also be
configured with the 'Service Filter Mode' set to either 'Multi Service' or 'Remap'
mode.
SCTE 104 insertion will be limited to inserting a Multiple Operation Message of a
'splice start normal' or 'splice end normal' type.
SCTE 35 insertion will be limited to inserting a 'splice_insert' command.
3-322
B = Supplied with Base Model
B
EN/LZT 790 0005 R7A