Adding an Allowed OPC Screen
This procedure is used to add an allowed originating
point code (OPC) screen to the database using the
ent-scr-opc command. The parameters
used by the
ent-scr-opc command are shown in the
Gateway Screening Attributes
section. The general rules that apply to configuring gateway screening entities
are shown in the
Gateway Screening Configuration
section.
The examples in this procedure are used to add the allowed OPC screen data shown in Table 12-1 and based on the example configurations shown in Figure 2-3, Figure 2-7, and Figure 2-9.
Table 12-1 Example Gateway Screening Allowed OPC Configuration Table
| Screening Reference | NI | NC | NCM | NSFI | NSR |
|---|---|---|---|---|---|
| gws4 | 001 | 001 | 001 | blkopc | gws3 |
| fld2 | 010 | 010 | 010 | blkopc | fld3 |
| isp1 | 015 | 015 | 015 | blkopc | isp1 |
| tup1 | 017 | 017 | 017 | sio | tup1 |
Note:
If you using multiple-part ITU national point codes with gateway screening, see the 14-Bit ITU National Point Code Formats section.The allowed OPC screen can reference one of the following screens.
- Blocked OPC
- Allowed SIO
- Allowed DPC
- Blocked DPC
- Allowed CGPA
Verifying the Gateway Screening Configuration
Enter the following commands to verify that these screens are in the database.
rtrv-scr-blkopc:all=yesrtrv-scr-sio:all=yesrtrv-scr-dpc:all=yesrtrv-scr-blkdpc:all=yesrtrv-scr-cgpa:all=yes
Gateway Screening Configuration Procedures
If the desired screen is not in the database, perform one of these procedures to add the desired screen to the database or change an existing screen in the database.
- Adding a Blocked OPC Screen
- Adding an Allowed SIO Screen
- Adding an Allowed DPC Screen
- Adding a Blocked DPC Screen
- Adding an Allowed Calling Party Address Screen
- Changing a Blocked OPC Screen
- Changing an Allowed SIO Screen
- Changing an Allowed DPC Screen
- Changing a Blocked DPC Screen
- Changing an Allowed Calling Party Address Screen
Specifying a Range of Values
A range of values can be specified for the point code
parameters
ni,
nc, or
ncm.
If a range of values is specified for any of these parameters, and the value of the other parameters match existing values for the screening reference name, the range of values for the point code parameter cannot include any values for that parameter that are currently provisioned for the screening reference name.
For example, screening reference name
scr1 contains these entries:
SR NI NC NCM NSFI NSR/ACT
SCR1 240 001 010 CGPA ------
SCR1 241 010 020 STOP ------Another entry for screening reference
scr1 with the
ni value of 240 and the
nc value of 001 cannot be specified if
the range of values for the
ncm parameter includes the value 010.
The ANSI point code parameter values can be specified as
a single value, a range of values, or with an asterisk (*). The asterisk
specifies all possible values for the
ni,
nc, and
ncm parameters.
Table 12-2
shows the valid combinations of these parameter values.
Table 12-2 Valid Value Combinations for ANSI Point Code Parameters
| NI | NC | NCM |
|---|---|---|
| Single Value | Single Value | Single Value |
| Single Value | Single Value | Range of Values |
| Single Value | Single Value | Asterisk |
| Single Value | Range of Values | Asterisk |
| Single Value | Asterisk | Asterisk |
| Range of Values | Asterisk | Asterisk |
| Asterisk | Asterisk | Asterisk |
A range of values can also be specified for an ITU-I or 24-bit ITU-N point code parameter using a combination of asterisks (*) and single values for the point code parameters. Table 12-3 shows the valid combinations of the ITU-I parameter values. Table 12-4 shows the valid combinations of the 24-bit ITU-N parameter values.
Table 12-3 Valid Value Combinations for ITU-I Point Code Parameters
| ZONE | AREA | ID |
|---|---|---|
| Single Value | Single Value | Single Value |
| Single Value | Single Value | Asterisk |
| Single Value | Asterisk | Asterisk |
| Asterisk | Asterisk | Asterisk |
Table 12-4 Valid Value Combinations for 24-Bit ITU-N Point Code Parameters
| MSA | SSA | SP |
|---|---|---|
| Single Value | Single Value | Single Value |
| Single Value | Single Value | Asterisk |
| Single Value | Asterisk | Asterisk |
| Asterisk | Asterisk | Asterisk |
Figure 12-5 Add an Allowed OPC Screen - Sheet 1 of 5
Figure 12-6 Add an Allowed OPC Screen - Sheet 2 of 5
Figure 12-7 Add an Allowed OPC Screen - Sheet 3 of 5
Figure 12-8 Add an Allowed OPC Screen - Sheet 4 of 5
Figure 12-9 Add an Allowed OPC Screen - Sheet 5 of 5