Installation & Operation Manual 592 Document # LTRT-92224
Mediant 8000
Parameter
Name
Type
Provisioning
Type
Description
Play Ringback
Tone to IP
Enum
Do Not Play, Play
Local, Play
According To
Early Media, Play
According To
Received Media
Instant Enables play of ringback tone (RBT) to the
Tel side and determines the method for
playing the RBT. It applies to all trunks that
are not configured by the parameter Play
Ringback Tone to Trunk.
Do Not Play – RBT is not played.
Play Local – RBT is played to the Tel
side of the call when a SIP 180/183
response is received.
Play According to Early Media – RBT is
played to the Tel side only if a 180/183
response without SDP is received. If
180/183 with SDP message is received,
the Board cuts through the voice channel
and doesn't play RBT (default).
Play According To Received Media – The
behaviour is similar to • Play
According to Early Media. If a SIP 180
response is received and the voice
channel is already open (due to a
previous 183 early media response or
due to an SDP in the current 180
response), the Board plays a local RBT if
there are no prior received RTP packets.
The Board stops playing the local RBT as
soon as it starts receiving RTP packets.
At this stage, if the Board receives
additional 18x responses, it does not
resume playing the local RBT.
Note: For ISDN trunks, this option is
applicable only if Local ISDN Ringback
Source is set to Gateway.
Local ISDN
Ringback
Source
Enum
PBX, Gateway
Instant Defines whether Ringback tone is played to
the ISDN by the PBX / PSTN or by the
gateway.
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