Use the Early Media window to configure parameters related to early media processing for a specified SIP trunk group.
On the SBC main screen, go to Configuration > System Provisioning > Category: Trunk Provisioning > Trunk Group > SIP Trunk Group > SIP Trunk Advanced > SIP Trunk - Media - Advanced > Early Media or
All > Address Context > Zone > SIP Trunk Group > Media > Early Media
The Early Media window is displayed.
Use the drop-down boxes to select an Address Context, Zone and SIP Trunk Group.
The following fields are displayed:
Make the required changes and click Save.
When a caller sends a SIP The SBC monitors and detects early media from the egress call leg. The SBC plays a Ring Back Tone (RBT). P-Early-Media and DLRBT
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: