Changing an Allowed Affected Point Code Screen

This procedure is used to change the attributes of an allowed affected point code (AFTPC) screen in the database using the chg-scr-aftpc command. The parameters used by the chg-scr-aftpc 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 009-009-009 for the allowed AFTPC screen gw21 to 100-100-100, and the subsystem number from 253 to 150.

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      SSN      NSFI    NSR/ACT
SCR1  240      001      010      012      STOP    ------
SCR1  241      010      020      015      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 3-5 shows the valid combinations of these parameter values.

Table 3-5 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 3-6 shows the valid combinations of the ITU-I parameter values. Table 3-7 shows the valid combinations of the 24-bit ITU-N parameter values.

Table 3-6 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 3-7 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 AFTPC screens in the database using the rtrv-scr-aftpc command.
The following is an example of the possible output.
```
rlghncxa03w 06-10-25 15:25:30 GMT EAGLE5 36.0.0
SCREEN = ALLOWED AFTPC
SR    REF  RULES
GW20  YES     1
GW21  YES     1
IEC   YES     2
LS04  YES     1
WRD0  YES     1
WRD2  YES     1
WRD4  YES     9
```
From the rtrv-scr-aftpc output, display the allowed AFTPC screen you wish to change using the rtrv-scr-aftpc command with the screening reference name. For this example, enter this command.

rtrv-scr-aftpc:sr=gw21

The following is an example of the possible output.
```
rlghncxa03w 06-10-25 15:25:30 GMT  EAGLE5 36.0.0
SCREEN = ALLOWED AFTPC
SR    NI       NC       NCM      SSN      NSFI    NSR/ACT
GW21  009      009      009      253      STOP    ------
```
If a gateway screening stop action set is to be assigned to the allowed AFTPC screen being changed in this procedure, go to step 2. Otherwise, skip step 2 and 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 AFTPC screen using the chg-scr-aftpc command.
If a gateway screening stop action is to be assigned to the allowed AFTPC screen being changed, enter the chg-scr-aftpc command with the nsfi=stop parameter and 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, sp, and ssn parameters must be entered exactly as shown in the rtrv-scr-aftpc output in step 1.

The following list contains the values for the nni, nnc, nncm, nzone, narea, nid, nnpc, nmsa, nssa, nsp, and nssn 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 (*)
- nssn – 0 - 255 or an asterisk (*)
A range of values can be specified for the nni, nnc, and nncm parameters. See the “Specifying a Range of Values” section for more information on how the asterisk and a range of values are used for the nni, nnc, and nncm parameters.

To change an ITU-I or 14-bit ITU-N spare point code to a non-spare point code, both the pcst=s and npcst=none parameters must be specified with the chg-scr-aftpc command.

To change an ITU-I or 14-bit ITU-N non-spare point code to a spare point code, the npcst=s parameter must be specified with the chg-scr-aftpc command. The pcst parameter does not have to be specified.

If the current point code in the screen being changed is either an ITU-I or 14-bit ITU-N spare point code, the pcst=s parameter must be specified with the chg-scr-aftpc command.

If the current point code in the screen being changed is either an ITU-I or 14-bit ITU-N non-spare point code, the pcst parameter does not have to be specified with the chg-scr-aftpc command. If the pcst parameter is specified for a screen containing either an ITU-I or 14-bit ITU-N non-spare point code, the pcst parameter value must be none.

For this example, enter this command.

chg-scr-aftpc:sr=gw21:ni=009:nc=009:ncm=009:ssn=253:nni=100 :nnc=100:nncm=100:nssn=150

Caution:
TheEAGLE does not support redirectingMSUs for theDTA feature or interceptingISUPIAM messages for theCalling Name Conversion Facility feature from the allowedAFTPC screen. Gateway screening stop action sets containing either theRDCT (redirect) orCNCF (calling name conversion facility) stop actions should not be assigned to the allowedAFTPC screen. If a gateway screening stop action set containing theRDCT orCNCF stop actions is specified with thechg-scr-aftpc command, unsolicited information message (UIM) 1127 is generated when the attempt is made to redirectMSUs from the allowedAFTPC screen. Unsolicited information message (UIM) 1217 is generated whenISUPIAMMSUs are intercepted from the allowedAFTPC screen. For more information onUIMs 1127 and 1217, go toUnsolicited Alarm and Information Messages Reference.

A message similar to the following should appear.
```
rlghncxa03w 06-10-25 15:27:30 GMT  EAGLE5 36.0.0
CHG-SCR-AFTPC: SCREEN SET AFFECTED - GW21  1% FULL
CHG-SCR-AFTPC: MASP A - COMPLTD
```
Verify the changes using the rtrv-scr-aftpc command with screening reference name used in step 4.
For this example, enter this command.

rtrv-scr-aftpc:sr=gw21

The following is an example of the possible output.
```
rlghncxa03w 06-10-25 15:28:30 GMT  EAGLE5 36.0.0
SCREEN = ALLOWED AFTPC
SR    NI       NC       NCM      SSN      NSFI    NSR/ACT
GW21  100      100      100      150      STOP    ------
```

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 3-5 Changing an Allowed Affected Point Code Screen

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