IMPORTANT

The SBC 5100, SBC 5110, SBC 5200, and SBC 5210 platforms are no longer supported beginning with the SBC Core 10.0.0R0 release. This release supports SBC 5400/7000/SWe/Cloud Native edition (CNe) platforms. Contact Ribbon Sales for upgrade information.


Use this object to configure various metrics/parameters related to Call Admission Controls on the egress leg.

On the SBC main screen, navigate to All → Address Context → Zone → GW Trunk Group → CAC → Egress.

  1. The Egress window is displayed.

    Note: An example dialog box is shown here. Refer to the Table below for model-specific allowed values (blue font in the example) for Call Rate Max and Call Burst Max.
  2. Select the applicable Address Context, Zone and SIP Trunk Group from their respective drop-down lists.
  3. The Edit Egress window is displayed.
  4. Make necessary changes and click Save. Click Clear to cancel the changes.


Egress Parameter Descriptions:

ParameterDescription
Call LimitTotal number of concurrent calls (0-2147483647, or unlimited), allowed on the egress leg. (default=unlimited)
Emergency OversubscriptionThe percentage (0-1000) of resource oversubscription allowed for emergency calls. (default=10)
Hpc OversubscriptionThis parameter specifies the amount of resource over-subscription (0-100), as a percentage, that are allowed for HPC. When the baseline call limit and bandwidth limit are reached, normal calls are not admitted, but additional HPC are allowed up to the configured percentage value. (default=10)
Call Rate Max

Specifies the value of maximum allowed burst in calls/second (above the allowed sustained rate) for egress call attempts.

  • SBC 5400 / SWe - Range: 1-450, or unlimited. (The default value is "unlimited")
  • SBC 7000 - Range: 1-1,350, or unlimited. (The default value is "unlimited")

Note: You can set both Call Burst Max and Call Rate Max as unlimited; however, if you assign a value to one parameter, you must also assign a value to the other.

Call Burst Max

Specifies the value of maximum allowed burst (above the allowed sustained rate) for egress call attempts in calls/second. 

  • SBC 5400 / SWe - Range: 1-900, or unlimited. (The default value is "unlimited")
  • SBC 7000 - Range: 1-2,700, or unlimited. (The default value is "unlimited")


Note

Call policing using Call Rate Max and Call Burst Max only applies to normal and emergency calls, and not to high-priority calls (HPC).