How do I configure the SIP call bandwidth limit on the AR router

In scenarios where the SIP server is deployed on the public network and SIP phones on the private and public networks communicate with each other, if the bandwidth is insufficient, the communication quality will be affected. Call Admission Control (CAC) and the total bandwidth can be configured on the NAT device to limit the SIP call bandwidth. If an SIP call exceeds the specified bandwidth, the call is rejected.
The configuration is as follows:
Run the nat sip cac enable bandwidth command to enable the CAC function and set the total bandwidth.

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