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Enabling Application Layer Gateways for RTP and RTCP for Media Flows

You can enable RTP and RTCP application layer gateways (ALGs) for twice NAT flows created when the PGC installs media gates on the VPG. The ALGs monitor packets on the gate and provide statistics.

You can only enable these ALGs for flows created by the VPG. You cannot enable them within standalone NAT rules.

You can choose to monitor either RTCP or RTP, or both. To enable RTP ALGs or RTCP ALGs, include the monitor media rtp statement or the monitor media rtcp statement at the [edit services pgcp gateway gateway-name] hierarchy level. To enable both ALGs simultaneously, you can include the monitor media statement without specifying rtp or rtcp at the [edit services pgcp gateway gateway-name] hierarchy level:




monitor {



media {

rtcp;

rtp;
}


}

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