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Internal Important Info for Authors/Reviewers

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 Use this object to configure Gateway Trunk Group parameters.

Note

The SBC 52x0 and SBC 7000 systems support creating IP Interface Groups containing sets of IP interfaces that are not "processor friendly" (i.e. carried on physical Ethernet ports served by separate processors). However, restrictions exist regarding the usage of such Interface Groups.

(This ability does not apply to the SBC 51x0 and SBC 5400 systems which have only two physical media ports. IP interfaces from the two physical ports may be configured within the same IP Interface Groups without restriction.)

For complete details, refer to Configuring IP Interface Groups and Interfaces.

To View Gw Trunk Group

On SBC main screen, navigate to All > Address Context > Zone > Gw Trunk Group. The Gw Trunk Group can be checked for each Address Context and Zone or for all the Address Contexts and Zones created. Use the drop-down box to select the desired Address Context and Zone.

All - Address Context - Zone - Gw Trunk Group Main Field

The Gw Trunk Group window is displayed

All - Address Context - Zone - Gw Trunk Group

To Edit Gw Trunk Group

To edit any of the Gw Trunk Group in the list, click the radio button next to the specific Gw Trunk Group name.

All - Address Context - Zone - Gw Trunk Group Highlighted

The Edit Selected Gw Trunk Group window is displayed below.

All - Address Context - Zone - Gw Trunk Group Edit Window

Make the required changes and click Save at the right hand bottom of the panel to save the changes made.

To Create Gw Trunk Group

To create a new Gw Trunk Group, click New Gw Trunk Group tab on the Gw Trunk Group List panel.

All - Address Context - Zone - Gw Trunk Group Fields

The Create New Gw Trunk Group window is displayed.

All - Address Context - Zone - Gw Trunk Group Create Window

The following fields are displayed:

Gw Sig Trunk Group Parameters

Parameter

 Description

Name

Specifies the name of the Gateway Trunk Group.

State

The administrative state of the gateway trunk group:

  • Disable (default)
  • Enable

Mode

The operational mode of the gateway trunk group:

  • Out of Service
  • In Service

Action

The action when putting this gateway trunk group out Of Service. This object controls whether calls are forced off or allowed to dry up upon a mode out-of-service. Select any one of the option:

  • Dryup (default)
  • Force
  • Undefined

Dryup Timeout

Dry up timeout (in minutes) when this gateway trunk group is out Of Service with dry up action. Enter a value in the range of 0-1440. Default is 5 minutes.

Acc MC1Percent

The percentage of calls to continue to send to a remote congested gateway (in MC1). Enter value in range of 0-100 percent. Default is 90 percent.

ACC MC2Percent

The percentage of calls to continue to send to a remote congested gateway (in MC2). Enter value in range of 0-100 percent. Default is 70 percent.

ACC Timer

Specifies the automatic congestion control timer. Enter value in range of 0-10. Default is 0.

Parent Shared CAC Limits Pool NameName of an existing Shared CAC Limits Pool that you assign as the parent of the Gateway Trunk Group.

Packet Outage

Minimum Duration

This is the outage (in milliseconds) on a call for that call to be counted as part of the packet outage detection algorithm. Enter value in range of 0-65535 in milliseconds. Default is 6000 milliseconds.

Calls

The number of calls with outages required within the current interval to declare a packet outage event. Enter value in range of 0-65535. Default is 1000.

Bandwidth Limit Reduction

The amount to reduce the bandwidth limit (as a percentage of the configured limit)  when a packet outage is detected. Enter value in range of 0-100 percent. Default is
50 percent.

Detection State

Used to enable automatic bandwidth reduction when a packet outage is detected. Select any one of the option:

  • Disabled (default)
  • Enabled

Detection Interval

The size of the packet outage detection interval in minutes. Enter value in range of 5- 1440 minutes. Default is 15 minutes.

Call Reservation

Inbound

The percent of channels reserved for inbound calls in IP gateway trunk groups. Must be 0-100, in increments of 5. Default is 0.

State

The administrative state of the packet outage:

  • Disabled (default)
  • Enabled

Priority Call

The number of priority call resources (circuits or IP calls) to be reserved for this trunk group. Must be 0-100, default is 1.

Incoming Call

The number of incoming call resources (circuits or IP calls) to be reserved for this trunk group. Must be 0-128, default is 1.

Outgoing Call

The percentage of outgoing call resources (circuits or IP calls) to be reserved for this trunk group.

This percentage is applied to the total number of circuits less the circuits reserved for incoming calls less the circuits reserved for priority calls. Must be 0-100, default is 10%.

SILC

State

The Administrative state of the SILC traffic control. Select any one of the option:

  • Disabled (default)
  • Enabled

MC1Percent

The percentage of calls to accept when the machine congestion level is 1. Enter value in range of 0-100 percent. Default is 75.

MC2Percent

The percentage of calls to accept when the machine congestion level is 2. Enter value in range of 0-100 percent. Default is 25.

CAC 
Call LimitTotal number of concurrent calls (0-2147483647, or unlimited), either ingress or egress, that are allowed (default=Unlimited).
Bandwidth LimitThe total media bandwidth limit (0-2147483647, or unlimited), in Kbits/sec (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 as a percentage (0-100), that is 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).
Egress 
Call LimitTotal number of concurrent calls (0-2147483647, or unlimited), either ingress or egress, that are allowed on egress (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 as a percentage (0-100), that is 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

Maximum (SBC 5000: 1-450, or unlimited; SBC 7000: 1-1350, or unlimited) sustained egress call rate allowed in calls per second.

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

Call Burst MaxMaximum (SBC 5000: 1-900, or unlimited; SBC 7000: 1-2700, or unlimited) allowed burst size (above the allowed sustained rate) for ingress call attempts, in calls per second (default=unlimited).
Ingress 
Call Limit Total number of concurrent calls (0-2147483647, or unlimited), either ingress or egress, that are allowed on ingress (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 as a percentage (0-100), that is 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

Maximum (SBC 5000: 1-450, or unlimited; SBC 7000: 1-1350, or unlimited) sustained ingress call rate allowed in calls per second.

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

Call Burst MaxMaximum (SBC 5000: 1-900, or unlimited; SBC 7000: 1-2700, or unlimited) allowed burst size (above the allowed sustained rate) for ingress call attempts, in calls per second (default=unlimited).
Media

Media IP Interface Group Name

Interface group to be used for media.

Source Address  Filtering

If enabled, filter out incoming media packets which do not match the expected source IP address and UDP port.

Direct Media Allowed

Specifies whether to enable the direct-media path so that media flows directly between endpoints in the same direct-media group or not. The options are:

  • Disabled (default)
  • Enabled
Note

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

 

To Copy Gw Trunk Group

To copy any of the created Gw Trunk Group and to make any minor changes, click the radio button next to the specific Gw Trunk Group to highlight the row.

All - Address Context - Zone - Gw Trunk Group Highlighted

Click Copy Gw Trunk Group tab on the Gw Trunk Group List panel.

All - Address Context - Zone - Gw Trunk Group Fields

 

The Copy Selected Gw Trunk Group window is displayed along with the field details which can be edited.

All - Address Context - Zone - Gw Trunk Group Copy Window

Make the required changes to the required fields and click Save to save the changes. The copied Gw Trunk Group is displayed at the bottom of the original Gw Trunk Group in the Gw Trunk Group List panel.

To Delete Gw Trunk Group

To delete any of the created Gw Trunk Group, click the radio button next to the specific Gw Trunk Group which you want to delete.

All - Address Context - Zone - Gw Trunk Group Highlighted

Click Delete at the end of the highlighted row. A delete confirmation message appears seeking your decision.

All - Address Context - Zone - Gw Trunk Group Delete Confirmation

Click Yes to remove the specific Gw Trunk Group from the list.

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