5.1.20 MTP Screening Rules

A MTP Screening Rule is an entity to configure all the screening rules for a Screen Set (/vstp/mtpscreensets/).

From the main menu of vSTP, navigate to Configuration, select MTP Screening Rules page.

Note:

Data Input Notes apply to the Insert and Edit pages, the View page is read-only.

Table 5-20 MTP Screening Rules Fields

Fields Description Data Input Notes
MTP Screening Name This defines MTP screening rule name.

It is a mandatory field.

Range: 1 leading alphabetic character and up to 7 following alphanumeric characters
Screening Rule Group Type This parameter indicates screening rule type.

It is a mandatory field.

Range:
  • AftDstn
  • AftPc
  • AftPcSsn
  • BlkDpc
  • BlkOpc
  • Dpc
  • Opc
  • Sio
MTP Screening Rule Group This defines the allowed screening rule group.

It is a mandatory field.

Range: 1 leading alphabetic character and up to 7 following alphanumeric characters
Next Screening Rule Group This defines the allowed next screening rule group name. Range: 1 leading alphabetic character and up to 7 following alphanumeric characters
NSFI This parameter specifies the next screening category that is used in the MTP screening process.

It is a mandatory field.

Range:
  • AftDstn
  • AftPc
  • AftPcSsn
  • BlkDpc
  • BlkOpc
  • Dpc
  • Fail
  • Opc
  • Sio
  • Stop
Network Indicator This parameter defines Network indicator value. It specifies one or more values for the network cluster and network cluster member values identified in the nc and ncm parameters. It specifies the network indicator of the point code represented by ni-nc-ncm. Range:
  • Valid characters are integers seperated by hyphen (-) and D (Uppercase letter D) for default range. Maximum allowed length is 7.
  • Regular expression to represent the range is '^((([0-1]?[0-9]?[0-9])|([2][0-4][0-9])|(25[0-5]))(-))?(([0-1]?[0-9]?[0-9])|([2][0-4][0-9])|(25[0-5]))$|^[*]$|^[D]$'
Network Cluster This parameter defines Network cluster value. It specifies one or more values for the network indicator and network cluster member values specified in the network indicator and ncm parameters. It specifies the network cluster of the point code represented by ni-nc-ncm. Range:
  • Valid characters are integers seperated by hyphen (-), asterik (*) to mark full range and D (Uppercase letter D) for default range. Maximum allowed length is 7.
  • Regular expression to represent the range is: '^((([0-1]?[0-9]?[0-9])|([2][0-4][0-9])|(25[0-5]))(-))?(([0-1]?[0-9]?[0-9])|([2][0-4][0-9])|(25[0-5]))$|^[*]$|^[D]$'
Network Cluster Member This parameter defines Network cluster member value. The parameter specifies one or more ncm values for the network indicator and network cluster values identified in the ni and nc parameters. It specifies the ncm of the point code represented by ni-nc-ncm. Range:
  • Valid characters are integers seperated by hyphen (-), asterik (*) to mark full range and D (Uppercase letter D) for default range.
  • Maximum allowed length is 7. Regular expression to represent the range is '^((([0-1]?[0-9]?[0-9])|([2][0-4][0-9])|(25[0-5]))(-))?(([0-1]?[0-9]?[0-9])|([2][0-4][0-9])|(25[0-5]))$|^[*]$|^[D]$'
ITU International Area This defines ITU international area. The area in the point code represented by zone-area-id. Range:
  • Valid characters are integers seperated by hyphen (-), asterik (*) to mark full range and D (Uppercase letter D) for default range.
  • Maximum allowed length is 7. Regular expression to represent the range is '^((([0-1]?[0-9]?[0-9])|([2][0-4][0-9])|(25[0-5]))(-))?(([0-1]?[0-9]?[0-9])|([2][0-4][0-9])|(25[0-5]))$|^[*]$|^[D]$'
ITU International ID This parameter defines ITU international ID. The ID in the point code represented by zone-area-id. Range:
  • Valid characters are integers seperated by hyphen (-), asterik (*) to mark full range and D (Uppercase letter D) for default range.
  • Maximum allowed length is 3. Regular expression to represent the range is '^(([0-7])(-))?([0-7])$|^[*]$|^[D]$'
ITU International Zone This parameter defines ITU international zone. This parameter specifies the zone in the point code represented by zone-area-id. Range:
  • Valid characters are integers seperated by hyphen (-) and D (Uppercase letter D) for default range. Maximum allowed length is 3.
  • Regular expression to represent the range is '^(([0-7])(-))?([0-7])$|^[D]$'
ITU National Point Code This parameter defines ITU national point code. Range:
  • Valid characters are integers seperated by hyphen (-) and D (Uppercase letter D) for default range. Maximum allowed length is 11.
  • Regular expression to represent the range is '^((([0]?[0-9]{1,4})|([1][0-5][0-9]{1,3})|(16[0-2][0-9]{1,2})|(163[0-7][0-9])|(1638[0-3]))(-))?(([0]?[0-9]{1,4})|([1][0-5][0-9]{1,3})|(16[0-2][0-9]{1,2})|(163[0-7][0-9])|(1638[0-3]))$|^[D]$'
ITU National Signaling Area This parameter defines 24-bit ITU-national main signaling area value. The msa of the point code represented by msa-ssa-sp. Range:
  • Valid characters are integers seperated by hyphen (-) and D (Uppercase letter D) for default range. Maximum allowed length is 7.
  • Regular expression to represent the range is '^((([0-1]?[0-9]?[0-9])|([2][0-4][0-9])|(25[0-5]))(-))?(([0-1]?[0-9]?[0-9])|([2][0-4][0-9])|(25[0-5]))$|^[D]$'
ITU National Sub Signaling Area This parameter defines 24-bit ITU national sub signaling area. The ssa in the point code represented by msa-ssa-sp. Range:
  • Valid characters are integers seperated by hyphen (-),asterik (*) to mark full range and D (Uppercase letter D) for default range. Maximum allowed length is 7.
  • Regular expression to represent the range is '^((([0-1]?[0-9]?[0-9])|([2][0-4][0-9])|(25[0-5]))(-))?(([0-1]?[0-9]?[0-9])|([2][0-4][0-9])|(25[0-5]))$|^[*]$|^[D]$'
ITU National Signaling Point This parameter defines 24-bit ITU national signaling point. This parameter specifies the sp in the point code represented by msa-ssa-sp. Range:
  • Valid characters are integers seperated by hyphen (-),asterik (*) to mark full range and D (Uppercase letter D) for default range. Maximum allowed length is 7.
  • Regular expression to represent the range is '^((([0-1]?[0-9]?[0-9])|([2][0-4][0-9])|(25[0-5]))(-))?(([0-1]?[0-9]?[0-9])|([2][0-4][0-9])|(25[0-5]))$|^[*]$|^[D]$'
ITU National Unit Number This parameter defines 16-bit ITU-national unit number. The un of the point code represented by un-sna-mna. Range:
  • Valid characters are integers seperated by hyphen (-) and D (Uppercase letter D) for default range. Maximum allowed length is 7.
  • Regular expression to represent the range is '^((([0]?[0-9]?[0-9])|([1][0-1][0-9])|(12[0-7]))(-))?(([0]?[0-9]?[0-9])|([1][0-1][0-9])|(12[0-7]))$|^[D]$'
ITU National Sub Number Area This parameter defines 16-bit ITU national sub number area. The sna in the point code represented by un-sna-mna. Range:
  • Valid characters are integers seperated by hyphen (-),asterik (*) to mark full range and D (Uppercase letter D) for default range.
  • Maximum allowed length is 5. Regular expression to represent the range is '^((([0]?[0-9])|([1][0-5]))(-))?(([0]?[0-9])|([1][0-5]))$|^[*]$|^[D]$'
ITU National Main Number Area This parameter defines 16-bit ITU national main number area. The mna in the point code represented by un-sna-mna. Range:
  • Valid characters are integers seperated by hyphen (-), asterik (*) to mark full range and D (Uppercase letter D) for default range. Maximum allowed length is 5.
  • Regular expression to represent the range is '^((([0-2]?[0-9])|([3][0-1]))(-))?(([0-2]?[0-9])|([3][0-1]))$|^[*]$|^[D]$'
Network Indicator Code This parameter defines Network indicator code. The NIC is the last 2 bits of the subservice field of an SIO. Range:
  • Valid characters are integers seperated by hyphen (-) and asterik (*) to mark full range. Maximum allowed length is 3.
  • Regular expression to represent the range is '^(([0-3])(-))?([0-3])$|^[*]$'
Message Priority This parameter defines message priority. Range:
  • Valid characters are integers seperated by hyphen (-) and asterik (*) to mark full range.
  • Maximum allowed length is 3. Regular expression to represent the range is '^(([0-3])(-))?([0-3])$|^[*]$'
Service Indicator This parameter defines Service indicator. The SI is the first 4 bits of an SIO. The SS7 code directs the message to the MTP user at the destination code. Range:
  • Valid characters are integers seperated by hyphen (-). Maximum allowed length is 5.
  • Regular expression to represent the range is '^((([0]?[3-9])|([1][0-5]))(-))?(([0]?[0-9])|([1][0-5]))$'
H0 Heading code This defines H0 Heading code. New H0 heading code for SSNM message. Range:
  • Valid characters are integers seperated by hyphen (-), asterik (*) to mark full range.
  • Maximum allowed length is 5. Regular expression to represent the range is '^((([0]?[0-9])|([1][0-5]))(-))?(([0]?[0-9])|([1][0-5]))$|^[*]$'
H1 Heading code This defines H1 heading code. New H0 heading code for SSNM message. Range:
  • Valid characters are integers separated by hyphen (-), asterik (*) .
  • Maximum allowed length is 5. Regular expression to represent the range is '^((([0]?[0-9])|([1][0-5]))(-))?(([0]?[0-9])|([1][0-5]))$|^[*]$'
SCCP Stop Action Screening This specifies whether the given MTP screening rule will include SCCP stop action screening. Default: false

Range: true, false
TIF Stop Action This field is valid only for SIO, if SI equals 5 only valid when nsfi equals stop. Range:
  • Tif_Ruleset_1
  • Tif_Ruleset_2
  • Tif_Ruleset_3
Spare This parameter signifies if the domain is a spare type or not. Range: Yes or No

Default: None.

Allowed only for ITUI_S and ITUN_S domains.
SCMG Message Type This parameter will specify the type of SCMG MSG. It's allowed only when the rule type is SIO and SI is 3.

The valid values are [1,2,3,4,5,6,253,254,255]. Here, 1 indicates Subsystem Allowed, 2 indicates Subsystem Prohibited, 3 indicates Subsystem Status Test, 4 indicates Subsystem Out of Service Request, 5 indicates Subsytem out of Service Grant, 6 indicates SCCP/Subsystem Congested, 253 indicates Subsystem Backup Routing, 254 indicates Subsystem normal routing, 255 indicates Subsystem routing test.

 Range: 1, 2, 3, 4, 5, 6, 253, 254,255
Affected PC SSN This is a must parameter for AftPcSsn rule type. Range: 1 to 255

You can perform add, edit, or delete tasks on VSTP>Configuration>MTP Screening Rules page.

Adding a MTP Screening Rule

Perform the following steps to configure a new MTP Screening Rule:

  1. Click Insert.
  2. Enter the applicable values.
  3. Click OK, Apply, or Cancel.

Editing a MTP Screening Rule

Perform the following procedure to change the field values for a selected MTP Screening Rule:

Note:

The MTP Screening Rule Name field cannot be changed.
  1. Select the MTP Screening Rule row to be edited.
  2. Click Edit.
  3. Enter the updated values.
  4. Click OK, Apply, or Cancel.

Deleting a MTP Screening Rule

Perform the following procedure to delete an MTP Screening Rule.

Note:

A MTP Screening Rule can only be deleted if all delete validation checks pass.
  1. Select the MTP Screening Rule to be deleted.
  2. Click Delete.
  3. Click OK or Cancel.