Removing an Allowed DPC Screen

This procedure is used to remove an allowed destination point code (DPC) screen from the database using the dlt-scr-dpc command. The parameters used by the dlt-scr-dpc 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 example in this procedure removes the allowed DPC screen gws9 from the database.

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 DPC screen can be referenced by one of the following screens.

Screen Set
Allowed OPC
Blocked OPC
Allowed SIO

Verifying the Gateway Screening Configuration

Enter the following commands to verify that none of these screens reference the allowed DPC screen being removed from the database.

rtrv-scrset:nsfi=dpc
rtrv-scr-opc:nsfi=dpc
rtrv-scr-blkopc:nsfi=dpc
rtrv-scr-sio:nsfi=dpc

Gateway Screening Configuration Procedures

To change the NSFI of any of these screens, perform one of these procedures.

Display the allowed DPC screens in the database using the rtrv-scr-dpc command.
The following is an example of the possible output.
```
rlghncxa03w 06-10-25 15:25:30 GMT EAGLE5 36.0.0
SCREEN = ALLOWED DPC

SR    REF  RULES
GWS9  YES     1
IEC   YES     6
ISP2  YES     1
TUP1  YES     1
WRD2  YES     1
WRD4  YES     9
```
From the rtrv-scr-dpc output, display the allowed DPC screen you wish to remove using the rtrv-scr-dpc command with the screening reference name. For this example, enter this command.

rtrv-scr-dpc:sr=gws9

The following is an example of the possible output.
```
rlghncxa03w 06-10-25 15:25:30 GMT  EAGLE5 36.0.0
SCREEN = ALLOWED DPC
SR    NI       NC       NCM      NSFI    NSR/ACT
GWS9  003      003      003      BLKDPC  GW12
```
Enter the commands in the Verifying the Gateway Screening Configuration section to verify that the screen being removed is not referenced by other screens in the database.

If the screen being removed is referenced by other screens, perform the procedures shown in the Gateway Screening Configuration Procedures section to change the NSFI of those screens to reference other screens or change the NSFI of these screens to STOP.
Remove the allowed DPC screen from the database using the dlt-scr-dpc command with the screening reference name shown in the rtrv-scr-dpc output in step 1 and with the point code parameter values (ni, nc, ncm, or zone, area, id, or npc, or msa, ssa, sp) of the screen being removed from the database.
The values for these parameters must be entered exactly as shown in the rtrv-scr-dpc output.

To remove an entry containing either an ITU-I or a 14-bit ITU-N spare point code, the pcst=s parameter must be specified with the dlt-scr-dpc command.

To remove an entry containing either an ITU-I or a 14-bit ITU-N non-spare point code, the pcst parameter does not have to be specified with the dlt-scr-dpc command. If the pcst parameter is specified, the value must be none.

For this example, enter this command.

dlt-scr-dpc:sr=gws9:ni=003:nc=003:ncm=003

A message similar to the following should appear.
```
rlghncxa03w 06-10-25 15:26:30 GMT  EAGLE5 36.0.0
DLT-SCR-DPC:  SCREEN SET AFFECTED - GWS9  0% FULL
DLT-SCR-DPC:  MASP A - COMPLTD
```
Verify the changes using the rtrv-scr-dpc command with the screening reference name used in step 3.
For this example, enter this command.

rtrv-scr-dpc:sr=gws9

The following is an example of the possible output.
```
E2573 Cmd Rej: SR or NSR does not reference an existing SR
```
This message shows that the specified screening reference name is not in the database and the action of the dlt-scr-dpc command in step 3 was successful. If the specified screening reference name contained more than one entry when the dlt-scr-dpc command was executed in step 3, the rtrv-scr-dpc:sr= command output would show the remaining entries in the screening reference instead of error message E2573.

Backup the new changes using the chg-db:action=backup:dest=fixed command.

The following messages should appear, the active Maintenance and Administration Subsystem Processor (MASP) appears first.

BACKUP (FIXED) : MASP A - Backup starts on active MASP.
BACKUP (FIXED) : MASP A - Backup on active MASP to fixed disk complete.
BACKUP (FIXED) : MASP A - Backup starts on standby MASP.
BACKUP (FIXED) : MASP A - Backup on standby MASP to fixed disk complete.

Figure 9-4 Removing an Allowed DPC Screen