Configuring SDP-Response Early Media Suppression

To configure SDP-response early media suppression:

1. Add the early-media-sdp-realms option to the SIP interface that interfaces with the softswitch.
2. Configure the SIP interface realm with an early media suppression rule that blocks all early media.
3. Configure either or both of the following:

   • One or more of the SIP realm’s child realms, each with an early media suppression rule that allows all or reverse direction early media and a list of additional prefixes that specifies the IP addresses of the media gateways, or a range of IP addresses that includes the media gateways. Early media is allowed from these gateways only for calls that signals through this SIP interface.

   • One or more realms that has the network interface equal to lo0:0, an early media suppression rule that allows all or reverse direction early media and a list of additional prefixes that specifies the IP addresses of the media gateways, or a range of IP addresses that includes the media gateways. Early media is allowed from these gateways regardless of interface.