Creating an ISUP Stack

Applies to version(s): 2.9, 2.10, 3.0, 3.2

The ISDN user part (ISUP) is the highest layer in the SS7 signaling stack and is responsible for the handling of calls. Once you have configured the MTP3 layer of your SS7 system, you must create an ISDN user part stack.

To create an ISUP stack:

1- Click ISUP in the navigation panel.

2- Click Create New Stack

3- Configure the new ISUP stack:

• Make sure the box labeled Enabled is checked
• Enter a name for the stack
• Select a primary hardware adapter
• Select a secondary hardware adapter
• Click Create

4- Verify that the "IsupStack was successfully created" message appears

Path

/configurations/@[configuration_name]/isup_stacks/@[isup_stack]

Parameters (text)

/configurations/@[configuration_name]/isup_stacks/@[isup_stack]
enabled                 = true
isup_options            = [ "Event information accept all values", "Extra called number bytes", "Extra calling number bytes" ]
name                    = "@[isup_stack]"
primary_hardware_unit   = "@[hardware_name]"
secondary_hardware_unit = ""

/configurations/@[configuration_name]/isup_stacks/@[isup_stack]/timers
first_group_msg_timer = "5 seconds"
t18_timer             = "15 seconds"
t19_timer             = "5 minutes"
t20_timer             = "15 seconds"
t21_timer             = "5 minutes"
t22_timer             = "15 seconds"
t23_timer             = "5 minutes"
t28_timer             = "10 seconds"

Parameters (json)

{
  "enabled" : true,
  "isup_options" : [
    "Event information accept all values",
    "Extra called number bytes",
    "Extra calling number bytes"
  ],
  "name" : "@[isup_stack]",
  "primary_hardware_unit" : "@[hardware_name]",
  "secondary_hardware_unit" : "",
  "timers" : {
    "first_group_msg_timer" : "5 seconds",
    "t18_timer" : "15 seconds",
    "t19_timer" : "5 minutes",
    "t20_timer" : "15 seconds",
    "t21_timer" : "5 minutes",
    "t22_timer" : "15 seconds",
    "t23_timer" : "5 minutes",
    "t28_timer" : "10 seconds"
  }
}

List of Parameters

• Name
• Primary Hardware Adapter
• Secondary Hardware Adapter

• T18 Timer
• T19 Timer
• T20 Timer
• T21 Timer
• T22 Timer
• T23 Timer
• T28 Timer
• First Group Msg Timer

Advanced

• Options