Enables ability to customize jitter buffer settings using the CustomMinJitterBuffer, CustomNomJitterBuffer and CustomMaxJitterBuffer mibs. When this setting is off, the jitter buffer will be determined using the arrisMtaDevVPNomJitterBuffer and arrisMtaDevVPMaxJitterBuffer mibs and defaults to min=nom=[(packet rate *1) + 5] and max = [(packet rate * 3) + 5] msecs. When set to on, the custom jitter buffer settings will default to 5-10-60 if no custom value is set using the CustomMinJitterBuffer, CustomNomJitterBuffer and CustomMaxJitterBuffer mibs.