In this section:
Use this feature to provision a tone and announcement profile, which specifies an announcement package and/or signaling tone package for the SBC to use to play announcements or signaling tones to calling or called parties. Tone and announcement profiles are assigned to ingress or egress trunk groups. Also, use this feature to provision Local Ring Back Tones (LRBT) for the SBC, which the SBC plays to callers upon receipt of an alert indication without a media stream or without an indication of in-band tones.
For information on Delayed Local Ring Back Tone (DLRBT) and P-Early-Media, see P-Early-Media and DLRBT later in this section.
For detailed information on D-SBC Support of Tones and Announcements, refer to D-SBC Support of Tones and Announcements.
To associate a Tone and Announcement Profile to a Trunk Group, use the following syntax:
% set addressContext <addressContext name> zone <zone name> sipTrunkGroup <sipTrunkGroup name> policy media toneAndAnnouncementProfile <profile name>
% set profiles media toneAndAnnouncementProfile <profile name> localRingBackTone signalingTonePackageState <disable | enable> flags announcementBasedTones <disable | enable> dynamicLRBT <disable | enable> forceLRBT <disable | enable> useThisLrbtForEgress <disable | enable> useThisLrbtForIngress <disable | enable> makeInbandToneAvailable <disable | enable> precedence <higher | lower> signalingTonePackage <name> toneAndAnnouncement announcementPackageState <disable | enable> announcementPackage <name> override <disable | enable> sigTonePackage <name>
The Tone and Announcement Profile Parameters are described below.
To configure localRingBackTone
options, first enable the signalingTonePackageState
flag.
You must enable makeInbandToneAvailable
in order to use Local Ringback Tone (LRBT).
To use the Force Local Ring Back Tone (FLRBT) feature, set the PSX flag For more information on the flag When a caller sends a SIP The SBC monitors and detects early media from the egress call leg. The SBC has an "observation" window for monitoring the stream of RTP packets. It also has a "silence" window before it restarts monitoring, to reject RTP packets from a previous announcement. The SBC plays a Ring Back Tone (RBT). The SBC plays LRBT only if it does not receive any early media from the egress call leg at the end of a monitoring cycle. If the SBC starts playing LRBT, it continues to play even if it detects RTP in the subsequent monitoring cycles, or exchanges a new set of SDP answers with the egress call leg. When the SBC receives an UPDATE from the egress call leg, and the caller (ingress call leg) does not support UPDATE, the SBC continues to feed tone in the same codec. When the ingress call leg supports UPDATE, the SBC feeds tone in a modified codec after a successful offer-answer negotiation. If the egress call leg responds with P-Early-Media header in its 18x response, the SBC transparently relays it to the ingress call leg.P-Early-Media and Delayed RBT
DelayedRBTWithToneContinuation
to enabled
. The flag is available under the entity Tone Generation Criteria
> Delayed RBT
in the PSX.DelayedRBTWithToneContinuation
:create Tone_Generation_Criteria_Data
Tone_Generation_Criteria_Id <string> Sequence_Number <int>
[Response_Code <short>] [Attributes <int>] [Ingress_Tg
<string>]
DelayedRBTWithToneContinuation
:update Tone_Generation_Criteria_Data
Tone_Generation_Criteria_Id <string> Sequence_Number <int>
[Response_Code <short>] [Attributes <int>] [Ingress_Tg
<string>]
DelayedRBTWithToneContinuation
:delete Tone_Generation_Criteria_Data Tone_Generation_Criteria_Id <string> Sequence_Number <int>
DelayedRBTWithToneContinuation
, refer to the PSX document Tone Generation Criteria Screen.INVITE
to the SBC (irrespective of the presence of "P-Early-Media: supported
" header in the Session Description Protocol (SDP) of the INVITE
), the SBC adds P-Early-Media header in its 18x
(180
or 183
) response towards ingress call leg only if: