Changing an Allowed Affected Destination Field Screen

This procedure is used to change the attributes of an allowed affected destination field (DESTFLD) screen in the database using the chg-scr-destfld command. The parameters used by the chg-scr-destfld 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 is used to change the point code 100-100-100 for the allowed DESTFLD screen fld5 to 030-030-030 and to redirect the MSU for the DTA feature.

Note:

If you using multiple-part ITU national point codes with gateway screening, see the 14-Bit ITU National Point Code Formats section.

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      STOP    ------
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 7-5 shows the valid combinations of these parameter values.

Table 7-5 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 7-6 shows the valid combinations of the ITU-I parameter values. Table 7-7 shows the valid combinations of the 24-bit ITU-N parameter values.

Table 7-6 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 7-7 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

Display the allowed DESTFLD screens in the database using the rtrv-scr-destfld command.
The following is an example of the possible output.
```
rlghncxa03w 06-10-25 15:25:30 GMT EAGLE5 36.0.0
SCREEN = ALLOWED DESTFLD
SR    REF  RULES
FLD5  YES     1
IEC   YES     6
WRD2  YES     1
WRD4  YES     9
```
From the rtrv-scr-destfld output, display the allowed DESTFLD screen you wish to change using the rtrv-scr-destfld command with the screening reference name. For this example, enter this command.

rtrv-scr-destfld:sr=fld5

The following is an example of the possible output.
```
rlghncxa03w 06-10-25 15:25:30 GMT  EAGLE5 36.0.0
SCREEN = ALLOWED DESTFLD
SR    NI       NC       NCM      NSFI   NSR/ACT
fld5  100      100      100      STOP    cr
```
If a gateway screening stop action set is to be assigned to the allowed DESTFLD screen being added to the database, go to step 2. Otherwise, go to step 3.

Display the gateway screening stop action sets in the database with the rtrv-gws-actset command.

This is an example of the possible output.

rlghncxa03w 06-10-25 15:26:30 GMT EAGLE5 36.0.0
ACT  ACT    ACT  ACT  ACT  ACT  ACT  ACT  ACT  ACT  ACT  ACT
ID   NAME   1    2    3    4    5    6    7    8    9    10
--   ------ ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
1    copy   copy      
2    rdct   rdct      
3    cr     copy rdct 
4    cncf   cncf      
5    cpcncf copy cncf 
6    cncfrd cncf rdct 
7    cpcfrd copy cncf rdct

GWS action set table is (7 of 16) 44% full

If the required gateway screening stop action set is not in the database, perform the Configuring Gateway Screening Stop Action Sets procedure to configure the required gateway screening stop action set.

Display the status of the ITU National and International Spare Point Code Support feature by entering the rtrv-ctrl-feat command with the ITU National and International Spare Point Code Support feature part number.
Note:
If any of these conditions apply to this procedure, skip this step and go to step 4:
- The point code in the screen is not being changed.
- The screen being changed contains either an ANSI or 24-bit ITU-N point code.
- The ITU-I or 14-bit ITU-N non-spare point code in the screen is not being changed to an ITU-I or 14-bit ITU-N spare point code.
- The point code in the screen is an ITU-I or 14-bit ITU-N spare point code or the screening reference contains other screens with ITU-I or 14-bit ITU-N spare point codes.
Enter this command.

rtrv-ctrl-feat:partnum=893013601

This is an example of the possible output.
```
rlghncxa03w 06-10-25 15:25:30 GMT EAGLE5 36.0.0
The following features have been permanently enabled:

Feature Name              Partnum   Status Quantity
Spare Point Code Support  893013601 on     ----

The following features have been temporarily enabled:

Feature Name              Partnum   Status Quantity   Trial Period Left
Zero entries found.

The following features have expired temporary keys:

Feature Name              Partnum
Zero entries found.
```
If the ITU National and International Spare Point Code Support feature is enabled, go to step 4.

If the ITU National and International Spare Point Code Support feature is not enabled, perform the “Activating the ITU National and International Spare Point Code Support Feature” procedure in Database Administration - SS7 User's Guide to enable the ITU National and International Spare Point Code Support feature as required. After the feature has been enabled, go to step 4.
Change the attributes of an allowed DESTFLD screen using the chg-scr-destfld command.
If a gateway screening stop action is to be assigned to the allowed DESTFLD screen being changed, enter the chg-scr-destfld command with the actname parameter with the name of a gateway screening stop action set shown in the output of the rtrv-gws-actset command executed in step 2.

The current values for the ni, nc, ncm, zone, area, id, npc, msa, ssa, and sp parameters must be entered exactly as shown in the rtrv-scr-destfld output in step 1.

The following list contains the values for the nni, nnc, nncm, nzone, narea, nid, nnpc, nmsa, nssa, and nsp parameters:
- nni - 0-255 or an asterisk (*)
- nnc - 0-255 or an asterisk (*)
- nncm - 0-255 or an asterisk (*)
- nzone - 0-7 or an asterisk (*)
- narea - 0-255 or an asterisk (*)
- nid - 0-7 or an asterisk (*)
- nnpc - 1 - 16383 or an asterisk (*)
- nmsa - 0-255 or an asterisk (*)
- nssa - 0-255 or an asterisk (*)
- nsp - 0-255 or an asterisk (*)
chg-scr-destfld:sr=fld5:ni=100:nc=100:ncm=100:nni=030:nnc=030 :nncm=030:actname=rdct

The following messages appear.
```
rlghncxa03w 06-10-25 15:27:30 GMT  EAGLE5 36.0.0
CHG-SCR-DESTFLD: SCREEN SET AFFECTED - FLD5  1% FULL
CHG-SCR-DESTFLD: MASP A - COMPLTD
```
Verify the changes using the rtrv-scr-destfld command with screening reference name used in step 4.
For this example, enter this command.

rtrv-scr-destfld:sr=fld5

The following is an example of the possible output.
```
rlghncxa03w 06-10-25 15:28:30 GMT  EAGLE5 36.0.0
SCREEN = ALLOWED DESTFLD
SR    NI       NC       NCM      NSFI   NSR/ACT
fld5  030      030      030      STOP    rdct
```

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 7-10 Change an Allowed Affected Destination Field Screen - Sheet 1 of 4

Figure 7-11 Change an Allowed Affected Destination Field Screen - Sheet 2 of 4

Figure 7-12 Change an Allowed Affected Destination Field Screen - Sheet 3 of 4

Figure 7-13 Change an Allowed Affected Destination Field Screen - Sheet 4 of 4