SCCP:GTT Association Configuration

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    Normal  0              false  false  false      EN-CA  X-NONE  X-NONE                                                    MicrosoftInternetExplorer4
+
The GTT Association Configuration step is used to configure associations for Global Title Translation of the SCCP layer. An association specifies the translation procedure to be used for a particular type of global title. The user configures an association for each global title type in SCCP.
  
−
The TB640_MSG_ID_SS7_SCCP_OP_GTT_ASSO_ALLOC (request/response) message is used to configure associations for Global Title Translation of the SCCP layer. An association specifies the translation procedure to be used for a particular type of global title. The user configures an association for each global title type in SCCP.
 
  
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Normal  0              false  false  false      EN-CA  X-NONE  X-NONE                                                    MicrosoftInternetExplorer4
+
The following enumeration lists the different configuration parameters and their descriptions:
  
−
The following enumeration lists the different configuration parameters and their description:
+
*The '''Network identifier''' parameter specifies the ID of the network
 +
*The '''Protocol variant''' parameter specifies the SCCP protocol variant. Allowable values: see the SCCP protocol variant table in [[Toolpack:Create a SCCP network]].
  
−
 
  
−
-          The network identifier parameter (un32NetworkId) specifies the ID of the network.
 
  
−
+
*The '''Global title format''' parameter specifies the SCCP GT format. Allowable values are:
  
−
-          The protocol variant parameter (ProtocolVariant) specifies the SCCP protocol variant. Allowable values: see Table 73 - SCCP protocol variant  08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F005200650066003100320034003200310034003700330039000000 .
 
  
−
+
{| class="wikitable" border="1"
 +
! width="150" style="background:#efefef;" |Global Title Format Type
 +
! width="350" style="background:#efefef;" |Description
 +
|-
 +
| Not used|| Indicates that no global title is used
 +
|-
 +
| Type 0|| Indicates that no global title is used
 +
|-
 +
| Type 1|| Global title format 1
 +
|-
 +
| Type 2|| Global title format 2
 +
|-
 +
| Type 3|| Global title format 3
 +
|-
 +
| Type 4|| Global title format 4
 +
|}
  
−
-          The global title format parameter (GtFormat) specifies the SCCP GT format. Allowable values:
 
  
−
Table  SEQ Table \* ARABIC 83 - SCCP GT format type
+
----
  
−
Global Title Format Type
 
  
−
Description
+
*The '''Number of actions''' parameter specifies the number of actions configured for this association. Allowable values: 0 - 7.
 +
*The '''Array of actions''' parameter contains the actions for this association. Allowable values: see Actions structure definition below.
  
−
TB640_SS7_SCCP_GT_FORMAT_TYPE_NOT_USED
 
  
−
Indicates that no  global title is used.
+
----
  
−
TB640_SS7_SCCP_GT_FORMAT_TYPE_0
 
  
−
Indicates that no  global title is used.
+
=== Action-specific configuration parameters ===
 +
*The action type parameter (ActionType) specifies the type of action for this association. Allowable values:
  
−
TB640_SS7_SCCP_GT_FORMAT_TYPE_1
 
  
−
Global title  format 1.
+
{| class="wikitable" border="1"
 +
! width="150" style="background:#efefef;" |SSN value to identify SCCP user
 +
! width="350" style="background:#efefef;" |Description
 +
|-
 +
| Fix|| Use a fixed range of digits to perform GTT. For example, use first 3 digits.
 +
|-
 +
| Ascending|| Use variable number of digits GTT in ascending order. For example, use digits 4 to 6 in a variable fashion to perform GTT. In this case, variable means match the fourth digit, and if no match, then match the fourth and fifth digits, and so on.
 +
|-
 +
| Descending|| Use variable number of digits GTT in descending order. For example, use digits 4 to 6 in a variable fashion to perform GTT. In this case, variable means match the sixth digit, and if no match, then match the fifth and sixth digits, and so on.
 +
|-
 +
| GT to PC|| Use digits in incoming GT as the point code for routing purposes. This type of GTT is used in ISNI.
 +
|-
 +
| Constant|| Always translate the incoming GT to a fixed address
 +
|-
 +
| Insert PC|| Insert DPC before incoming GTAI and change TT, ES and NAI, leaving GTAI unchanged. This action is for modifying calling party address at an international Gateway, when message is entering international network, originating form a national network and having calling address in national specific format with Generic Numbering Plan. DPC inserted is the point code of the international Gateway, having capability to translate back the international address format to national specific address in response message. The DPC inserted, need not be the self point code of the international Gateway modifying the calling party address.
 +
|-
 +
| Strip PC|| If first six digits are self point code in international format, strip off first six digits from the GTAI. Then do the translation and replace TT, ES, and NAI. Examine the DPC of the translated address, if it is self, do translation of the resulting address again else message will be forwarded to DPC for further translation without changing GTAI of the called address.
 +
|}
  
−
TB640_SS7_SCCP_GT_FORMAT_TYPE_2
 
  
−
Global title  format 2.
+
----
  
−
TB640_SS7_SCCP_GT_FORMAT_TYPE_3
 
  
−
Global title  format 3.
+
*The '''Start digit''' parameter specifies the starting digit of the range for this action
  
−
TB640_SS7_SCCP_GT_FORMAT_TYPE_4
 
  
−
Global title format  4.
+
'''Note''': Used only with action of type:
  
−
+
*Fix
 +
*Variable ascending
 +
*Variable descending
  
−
-          The number of actions parameter (un32NbActions) specifies the number of actions configured for this association. Allowable values: 0 - 7.
 
  
−
+
----
  
−
-          The array of actions parameter (aActions) contains the actions for this association. Allowable values: see Actions structure definition below.
 
  
−
+
*The '''End digit''' parameter specifies the ending digit of the range for this action
  
−
Structure contains the Action specific configuration parameters for GTT association configuration:
 
  
−
+
'''Note:''' Used only with action of type:
  
−
typedef struct _TB640_SS7_SCCP_ACTION
+
*Fix
 +
*Variable ascending
 +
*Variable descending
  
−
{
 
  
−
      TBX_UINT32                              un32StructVersion;
+
----
  
−
      TB640_SS7_SCCP_ACTION_TYPE              ActionType;
 
  
−
      TBX_UINT32                              un32StartDigit;
+
=== GT Format 1-specific parameters ===
 +
*The '''Odd even''' parameter specifies the odd or even indicator. Used to encode the odd or even indicator bit in the address parameter of an SCCP message. Allowable values are:
  
−
      TBX_UINT32                              un32EndDigit;
 
  
−
+
{| class="wikitable" border="1"
 +
! width="150" style="background:#efefef;" |GT Odd/Even Type
 +
! width="350" style="background:#efefef;" |Description
 +
|-
 +
| Not used|| Not used
 +
|-
 +
| Odd|| Odd number of address signals
 +
|-
 +
| Even|| Even number of address signals
 +
|}
  
−
} TB640_SS7_SCCP_ACTION, *PTB640_SS7_SCCP_ACTION;
 
  
−
+
----
  
−
General explanation of the parameters of Action specific configuration:
 
  
−
+
*The '''Nature of address''' parameter specifies the nature of address indicator. Used to encode the 7-bit nature of address indicator in the address parameter of an SCCP message. Allowable values are:
  
−
-          The action type parameter (ActionType) specifies the type of action for this association. Allowable values:
 
  
−
Table  SEQ Table \* ARABIC 84 - SCCP GT action type
+
{| class="wikitable" border="1"
 +
! width="150" style="background:#efefef;" |GT Nature of Address Indicator
 +
! width="350" style="background:#efefef;" |Description
 +
|-
 +
| Not used|| Not used
 +
|-
 +
| Subscriber|| Subscriber number
 +
|-
 +
| National|| National significant number
 +
|-
 +
| International|| International number
 +
|}
  
−
SSN value to identify SCCP user
 
  
−
Description
+
----
  
−
TB640_SS7_SCCP_ACTION_TYPE_FIX
 
  
−
Use a fixed  range of digits to perform GTT. For example, use first 3 digits.
+
=== GT Format 2-specific parameters ===
 +
*The '''Use type value''' parameter specifies whether or not to use the translation type value. Note that the translation type value is required for GTT address map configuration and also to send data using GT but it is optional for GTT association configuration. When setting the use translation type value parameter to 'False' then type value is ignored (i.e., do not care) for GTT association operation
 +
*The '''Type value''' parameter specifies the translation type value. Used to encode the 8-bit translation type field in the address parameter of an SCCP message. Allowable values: 0 to 255
  
−
TB640_SS7_SCCP_ACTION_TYPE_VARIABLE_ASCENDING
 
  
−
Use variable  number of digits GTT in ascending order. For example, use digits 4 to 6 in a  variable fashion to perform GTT. In this case, variable means match the  fourth digit, and if no match, then match the fourth and fifth digits, and so  on.
+
----
  
−
TB640_SS7_SCCP_ACTION_TYPE_VARIABLE_DESCENDING
 
  
−
Use variable  number of digits GTT in descending order. For example, use digits 4 to 6 in a  variable fashion to perform GTT. In this case, variable means match the sixth  digit, and if no match, then match the fifth and sixth digits, and so on.
+
=== GT Format 3-specific parameters ===
 +
*The '''Use type value''' parameter; see GT Format 2 explanation
 +
*The '''Type value''' parameter; see GT Format 2 explanation
  
−
TB640_SS7_SCCP_ACTION_TYPE_GT_TO_PC
 
  
−
Use digits in  incoming GT as the point code for routing purposes. This type of GTT is used  in ISNI.
+
----
  
−
TB640_SS7_SCCP_ACTION_TYPE_CONST
 
  
−
Always  translate the incoming GT to a fixed address.
+
*The '''Numbering plan''' parameter specifies the numbering plan. Used to encode the numbering plan nibble in the address parameter of an SCCP message. Allowable values:
  
−
TB640_SS7_SCCP_ACTION_TYPE_INSERT_PC
 
  
−
Insert DPC  before incoming GTAI and change TT, ES and NAI, leaving GTAI unchanged. This  action is for modifying calling party address at an international Gateway,  when message is entering international network, originating form a national  network and having calling address in national specific format with Generic  Numbering Plan. DPC inserted is the point code of the international Gateway,   having capability to translate back the international address format to  national specific address in response message. The DPC inserted, need not be  the self point code of the international Gateway modifying the calling party  address.
+
{| class="wikitable" border="1"
 +
! width="150" style="background:#efefef;" |GT Numbering Plan Type
 +
! width="350" style="background:#efefef;" |Description
 +
|-
 +
| Not used|| Not used
 +
|-
 +
| Unknown|| Unknown
 +
|-
 +
| ISDN|| ISDN/telephony numbering plan
 +
|-
 +
| Telephony|| Telephony numbering plan (Not valid in ITU96, ANSI96 and TELCORDIA)
 +
|-
 +
| Data|| Data numbering plan
 +
|-
 +
| Telex|| Telex numbering plan
 +
|-
 +
| Maritime mobile|| Maritime Mobile numbering plan
 +
|-
 +
| Land mobile|| Land Mobile numbering plan
 +
|-
 +
| ISDN mobile|| ISDN Mobile numbering plan
 +
|-
 +
| Private|| Private network or network specific numbering plan. (For ITU96, ANSI96 and TELCORDIA)
 +
|}
  
−
TB640_SS7_SCCP_ACTION_TYPE_STRIP_PC
 
  
−
If first six  digits are self point code in international format, strip off first six  digits from the GTAI. Then do the translation and replace TT, ES, and NAI.  Examine the DPC of the translated address, if it is self, do translation of  the resulting address again else message will be forwarded to DPC for further  translation without changing GTAI of the called address.
+
----
  
−
 
  
−
-          The start digit parameter (un32StartDigit) specifies the starting digit of the range for this action.
+
*The '''Encoding scheme''' parameter specifies the encoding scheme. Used to encode the encoding scheme nibble in the address parameter of an SCCP message (supports only BCD encoding scheme). Allowable values include:
  
−
?      Used only with action of type:
 
  
−
-         TB640_SS7_SCCP_ACTION_TYPE_FIX
+
{| class="wikitable" border="1"
 +
! width="150" style="background:#efefef;" |GT Encoding Scheme Type
 +
! width="350" style="background:#efefef;" |Description
 +
|-
 +
| Not used|| Not used
 +
|-
 +
| BCD odd || BCD odd
 +
|-
 +
| BCD even|| BCD even
 +
|-
 +
| National ES || National-specific ES (Allowed only in ITU96)
 +
|}
  
−
-          TB640_SS7_SCCP_ACTION_TYPE_VARIABLE_ASCENDING
 
  
−
-          TB640_SS7_SCCP_ACTION_TYPE_VARIABLE_DESCENDING actions
 
  
−
 
  
−
-         The end digit parameter (un32EndDigit) specifies the ending digit of the range for this action.
+
----
  
−
?      Used only with action of type:
 
  
−
-         TB640_SS7_SCCP_ACTION_TYPE_FIX
+
=== GT Format 4-specific parameters ===
  
−
-          TB640_SS7_SCCP_ACTION_TYPE_VARIABLE_ASCENDING
+
*The '''Use type value''' parameter; see GT Format 2 explanation
−
 
+
*The '''Type value''' parameter; see GT Format 2 explanation
−
-          TB640_SS7_SCCP_ACTION_TYPE_VARIABLE_DESCENDING actions
+
*The '''Numbering plan''' parameter; see GT Format 3 explanation
−
 
+
*The '''Encoding scheme''' parameter; see GT Format 3 explanation
−
+
*The '''Nature of address''' parameter; see GT Format 1 explanation
−
 
+
−
Structure contains the GT Format 1 specific configuration parameters for GTT association configuration:
+
−
 
+
−
+
−
 
+
−
typedef struct _TB640_SS7_SCCP_GT_FORMAT1
+
−
 
+
−
{
+
−
 
+
−
      TB640_SS7_SCCP_GT_ODD_EVEN_TYPE          OddEven;
+
−
 
+
−
      TB640_SS7_SCCP_GT_NATURE_OF_ADDR_IND    NatureOfAddress;
+
−
 
+
−
+
−
 
+
−
} TB640_SS7_SCCP_GT_FORMAT1, *PTB640_SS7_SCCP_GT_FORMAT1;
+
−
 
+
−
+
−
 
+
−
General explanation of the parameters of GT Format 1 specific information:
+
−
 
+
−
+
−
 
+
−
-          The odd even parameter (OddEven) specifies the odd or even indicator. Used to encode the odd or even indicator bit in the address parameter of an SCCP message. Allowable values:
+
−
 
+
−
Table  SEQ Table \* ARABIC 85 - SCCP GT odd/even type
+
−
 
+
−
GT Odd/Even Type
+
−
 
+
−
Description
+
−
 
+
−
TB640_SS7_SCCP_GT_ODD_EVEN_TYPE_NOT_USED
+
−
 
+
−
Not used.
+
−
 
+
−
TB640_SS7_SCCP_GT_ODD_EVEN_TYPE_ODD
+
−
 
+
−
Odd number of  address signals.
+
−
 
+
−
TB640_SS7_SCCP_GT_ODD_EVEN_TYPE_EVEN
+
−
 
+
−
Even number of  address signals.
+
−
 
+
−
+
−
 
+
−
-          The nature of address parameter (NatureOfAddress) specifies the nature of address indicator. Used to encode the 7-bit nature of address indicator in the address parameter of an SCCP message. Allowable values:
+
−
 
+
−
Table  SEQ Table \* ARABIC 86 - SCCP GT nature of address indicator
+
−
 
+
−
GT Nature of Address Indicator
+
−
 
+
−
Description
+
−
 
+
−
TB640_SS7_SCCP_GT_NATURE_OF_ADDR_IND_NOT_USED
+
−
 
+
−
Not used.
+
−
 
+
−
TB640_SS7_SCCP_GT_NATURE_OF_ADDR_IND_SUBSCRIBER
+
−
 
+
−
Subscriber  number.
+
−
 
+
−
TB640_SS7_SCCP_GT_NATURE_OF_ADDR_IND_NATIONAL
+
−
 
+
−
National  significant number.
+
−
 
+
−
TB640_SS7_SCCP_GT_NATURE_OF_ADDR_IND_INTERNATIONAL
+
−
 
+
−
International  number.
+
−
 
+
−
+
−
 
+
−
Structure contains the GT Format 2 specific information parameters for GTT association configuration:
+
−
 
+
−
+
−
 
+
−
typedef struct _TB640_SS7_SCCP_GT_FORMAT2
+
−
 
+
−
{
+
−
 
+
−
      TBX_BOOLEAN                              fUseTypeValue;
+
−
 
+
−
      TBX_UINT8                                aun8Padding0[3];
+
−
 
+
−
      TBX_UINT32                              un32TypeValue;
+
−
 
+
−
+
−
 
+
−
} TB640_SS7_SCCP_GT_FORMAT2, *PTB640_SS7_SCCP_GT_FORMAT2;
+
−
 
+
−
+
−
 
+
−
General explanation of the parameters of GT Format 2 specific information:
+
−
 
+
−
+
−
 
+
−
-          The use type value parameter (fUseTypeValue) specifies whether or not to use the translation type value. Note that the translation type value is required for GTT address map configuration and also to send data using GT but it is optional for GTT association configuration. When setting the use translation type value parameter (fUseTypeValue) to TBX_FALSE then type value (un32TypeValue) is ignored (don’t care) for GTT association operation.
+
−
 
+
−
+
−
 
+
−
-          The type value parameter (un32TypeValue) specifies the translation type value. Used to encode the 8-bit translation type field in the address parameter of an SCCP message. Allowable values: 0 to 255.
+
−
 
+
−
+
−
 
+
−
Structure contains the GT Format 3 specific information parameters for GTT association configuration:
+
−
 
+
−
+
−
 
+
−
typedef struct _TB640_SS7_SCCP_GT_FORMAT3
+
−
 
+
−
{
+
−
 
+
−
TBX_BOOLEAN                              fUseTypeValue;
+
−
 
+
−
      TBX_UINT8                                aun8Padding0[3];
+
−
 
+
−
      TBX_UINT32                              un32TypeValue;
+
−
 
+
−
      TB640_SS7_SCCP_GT_NUMB_PLAN_TYPE        NumberingPlan;
+
−
 
+
−
      TB640_SS7_SCCP_GT_ENCODING_TYPE          EncodingScheme;
+
−
 
+
−
+
−
 
+
−
} TB640_SS7_SCCP_GT_FORMAT3, *PTB640_SS7_SCCP_GT_FORMAT3;
+
−
 
+
−
+
−
 
+
−
General explanation of the parameters of GT Format 3 specific information:
+
−
 
+
−
+
−
 
+
−
-          The use type value parameter (fUseTypeValue)… see GT Format 2 explanation.
+
−
 
+
−
+
−
 
+
−
-          The type value parameter (un32TypeValue)… see GT Format 2 explanation.
+
−
 
+
−
+
−
 
+
−
-          The numbering plan parameter (NumberingPlan) specifies the numbering plan. Used to encode the numbering plan nibble in the address parameter of an SCCP message. Allowable values:
+
−
 
+
−
Table  SEQ Table \* ARABIC 87 - SCCP GT numbering plan type
+
−
 
+
−
GT Numbering Plan Type
+
−
 
+
−
Description
+
−
 
+
−
TB640_SS7_SCCP_GT_NUMB_PLAN_TYPE_NOT_USED
+
−
 
+
−
Not used.
+
−
 
+
−
TB640_SS7_SCCP_GT_NUMB_PLAN_TYPE_UNKNOWN
+
−
 
+
−
Unknown.
+
−
 
+
−
TB640_SS7_SCCP_GT_NUMB_PLAN_TYPE_ISDN
+
−
 
+
−
ISDN/telephony  numbering plan.
+
−
 
+
−
TB640_SS7_SCCP_GT_NUMB_PLAN_TYPE_TELEPHONY
+
−
 
+
−
Telephony  numbering plan.
+
−
 
+
−
(Not valid in ITU96, ANSI96  and TELCORDIA)
+
−
 
+
−
TB640_SS7_SCCP_GT_NUMB_PLAN_TYPE_GENERIC
+
−
 
+
−
Generic  numbering plan.
+
−
 
+
−
(For ITU96 only)
+
−
 
+
−
TB640_SS7_SCCP_GT_NUMB_PLAN_TYPE_DATA
+
−
 
+
−
Data numbering  plan.
+
−
 
+
−
TB640_SS7_SCCP_GT_NUMB_PLAN_TYPE_TELEX
+
−
 
+
−
Telex  numbering plan.
+
−
 
+
−
TB640_SS7_SCCP_GT_NUMB_PLAN_TYPE_MARITIME_MOBILE
+
−
 
+
−
Maritime Mobile numbering plan.
+
−
 
+
−
TB640_SS7_SCCP_GT_NUMB_PLAN_TYPE_LAND_MOBILE
+
−
 
+
−
Land Mobile  numbering plan.
+
−
 
+
−
TB640_SS7_SCCP_GT_NUMB_PLAN_TYPE_ISDN_MOBILE
+
−
 
+
−
ISDN Mobile  numbering plan.
+
−
 
+
−
TB640_SS7_SCCP_GT_NUMB_PLAN_TYPE_PRIVATE
+
−
 
+
−
Private  network or network specific numbering plan.
+
−
 
+
−
(For ITU96, ANSI96  and TELCORDIA)
+
−
 
+
−
+
−
 
+
−
-          The encoding scheme parameter (EncodingScheme) specifies the encoding scheme. Used to encode the encoding scheme nibble in the address parameter of an SCCP message (supports only BCD encoding scheme). Allowable values:
+
−
 
+
−
Table  SEQ Table \* ARABIC 88 - SCCP GT encoding scheme type
+
−
 
+
−
GT Encoding Scheme Type
+
−
 
+
−
Description
+
−
 
+
−
TB640_SS7_SCCP_GT_ENCODING_TYPE_NOT_USED
+
−
 
+
−
Not used.
+
−
 
+
−
TB640_SS7_SCCP_GT_ENCODING_TYPE_UNKNOWN
+
−
 
+
−
Unknown.
+
−
 
+
−
TB640_SS7_SCCP_GT_ENCODING_TYPE_BCD_ODD
+
−
 
+
−
BCD Odd.
+
−
 
+
−
TB640_SS7_SCCP_GT_ENCODING_TYPE_BCD_EVEN
+
−
 
+
−
BCD Even.
+
−
 
+
−
TB640_SS7_SCCP_GT_ENCODING_TYPE_NATIONAL_ES
+
−
 
+
−
National  specific ES.
+
−
 
+
−
(Allowed only  in ITU96)
+
−
 
+
−
+
−
 
+
−
Structure contains the GT Format 4 specific information parameters for GTT association configuration:
+
−
 
+
−
+
−
 
+
−
typedef struct _TB640_SS7_SCCP_GT_FORMAT4
+
−
 
+
−
{
+
−
 
+
−
TBX_BOOLEAN                              fUseTypeValue;
+
−
 
+
−
TBX_UINT8                                un8Padding0[3];
+
−
 
+
−
      TBX_UINT32                              un32TypeValue;
+
−
 
+
−
      TB640_SS7_SCCP_GT_NUMB_PLAN_TYPE        NumberingPlan;
+
−
 
+
−
      TB640_SS7_SCCP_GT_ENCODING_TYPE          EncodingScheme;
+
−
 
+
−
      TB640_SS7_SCCP_GT_NATURE_OF_ADDR_IND    NatureOfAddress;
+
−
 
+
−
      TBX_UINT8                                un8Padding1[4];
+
−
 
+
−
+
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+
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} TB640_SS7_SCCP_GT_FORMAT4, *PTB640_SS7_SCCP_GT_FORMAT4;
+
−
 
+
−
+
−
 
+
−
General explanation of the parameters of GT Format 4 specific information:
+
−
 
+
−
+
−
 
+
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-          The use type value parameter (fUseTypeValue)… see GT Format 2 explanation.
+
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+
−
+
−
 
+
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-          The type value parameter (un32TypeValue)… see GT Format 2 explanation.
+
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+
−
+
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+
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-          The numbering plan parameter (NumberingPlan)… see GT Format 3 explanation.
+
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+
−
+
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+
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-          The encoding scheme parameter (EncodingScheme) … see GT Format 3 explanation.
+
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+
−
+
−
 
+
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-          The nature of address parameter (NatureOfAddress) … see GT Format 1 explanation.
+
−
 
+
−
+
−
 
+
−
The response part of the message TB640_MSG_ID_SS7_SCCP_OP_GTT_ASSO_ALLOC contains the field:
+
−
 
+
−
      …
+
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+
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+
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+
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      TB640_SS7_SCCP_GTT_ASSO_HANDLE      hSccpGttAsso;          /* The handle of the instance of
+
−
 
+
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                                                      * the SCCP GTT association. */
+
−
 
+
−
      …
+

Latest revision as of 08:04, 18 April 2018

The GTT Association Configuration step is used to configure associations for Global Title Translation of the SCCP layer. An association specifies the translation procedure to be used for a particular type of global title. The user configures an association for each global title type in SCCP.


The following enumeration lists the different configuration parameters and their descriptions:

  • The Network identifier parameter specifies the ID of the network
  • The Protocol variant parameter specifies the SCCP protocol variant. Allowable values: see the SCCP protocol variant table in Toolpack:Create a SCCP network.


  • The Global title format parameter specifies the SCCP GT format. Allowable values are:


Global Title Format Type Description
Not used Indicates that no global title is used
Type 0 Indicates that no global title is used
Type 1 Global title format 1
Type 2 Global title format 2
Type 3 Global title format 3
Type 4 Global title format 4



  • The Number of actions parameter specifies the number of actions configured for this association. Allowable values: 0 - 7.
  • The Array of actions parameter contains the actions for this association. Allowable values: see Actions structure definition below.



Contents

Action-specific configuration parameters

  • The action type parameter (ActionType) specifies the type of action for this association. Allowable values:


SSN value to identify SCCP user Description
Fix Use a fixed range of digits to perform GTT. For example, use first 3 digits.
Ascending Use variable number of digits GTT in ascending order. For example, use digits 4 to 6 in a variable fashion to perform GTT. In this case, variable means match the fourth digit, and if no match, then match the fourth and fifth digits, and so on.
Descending Use variable number of digits GTT in descending order. For example, use digits 4 to 6 in a variable fashion to perform GTT. In this case, variable means match the sixth digit, and if no match, then match the fifth and sixth digits, and so on.
GT to PC Use digits in incoming GT as the point code for routing purposes. This type of GTT is used in ISNI.
Constant Always translate the incoming GT to a fixed address
Insert PC Insert DPC before incoming GTAI and change TT, ES and NAI, leaving GTAI unchanged. This action is for modifying calling party address at an international Gateway, when message is entering international network, originating form a national network and having calling address in national specific format with Generic Numbering Plan. DPC inserted is the point code of the international Gateway, having capability to translate back the international address format to national specific address in response message. The DPC inserted, need not be the self point code of the international Gateway modifying the calling party address.
Strip PC If first six digits are self point code in international format, strip off first six digits from the GTAI. Then do the translation and replace TT, ES, and NAI. Examine the DPC of the translated address, if it is self, do translation of the resulting address again else message will be forwarded to DPC for further translation without changing GTAI of the called address.



  • The Start digit parameter specifies the starting digit of the range for this action


Note: Used only with action of type:

  • Fix
  • Variable ascending
  • Variable descending



  • The End digit parameter specifies the ending digit of the range for this action


Note: Used only with action of type:

  • Fix
  • Variable ascending
  • Variable descending



GT Format 1-specific parameters

  • The Odd even parameter specifies the odd or even indicator. Used to encode the odd or even indicator bit in the address parameter of an SCCP message. Allowable values are:


GT Odd/Even Type Description
Not used Not used
Odd Odd number of address signals
Even Even number of address signals



  • The Nature of address parameter specifies the nature of address indicator. Used to encode the 7-bit nature of address indicator in the address parameter of an SCCP message. Allowable values are:


GT Nature of Address Indicator Description
Not used Not used
Subscriber Subscriber number
National National significant number
International International number



GT Format 2-specific parameters

  • The Use type value parameter specifies whether or not to use the translation type value. Note that the translation type value is required for GTT address map configuration and also to send data using GT but it is optional for GTT association configuration. When setting the use translation type value parameter to 'False' then type value is ignored (i.e., do not care) for GTT association operation
  • The Type value parameter specifies the translation type value. Used to encode the 8-bit translation type field in the address parameter of an SCCP message. Allowable values: 0 to 255



GT Format 3-specific parameters

  • The Use type value parameter; see GT Format 2 explanation
  • The Type value parameter; see GT Format 2 explanation



  • The Numbering plan parameter specifies the numbering plan. Used to encode the numbering plan nibble in the address parameter of an SCCP message. Allowable values:


GT Numbering Plan Type Description
Not used Not used
Unknown Unknown
ISDN ISDN/telephony numbering plan
Telephony Telephony numbering plan (Not valid in ITU96, ANSI96 and TELCORDIA)
Data Data numbering plan
Telex Telex numbering plan
Maritime mobile Maritime Mobile numbering plan
Land mobile Land Mobile numbering plan
ISDN mobile ISDN Mobile numbering plan
Private Private network or network specific numbering plan. (For ITU96, ANSI96 and TELCORDIA)



  • The Encoding scheme parameter specifies the encoding scheme. Used to encode the encoding scheme nibble in the address parameter of an SCCP message (supports only BCD encoding scheme). Allowable values include:


GT Encoding Scheme Type Description
Not used Not used
BCD odd BCD odd
BCD even BCD even
National ES National-specific ES (Allowed only in ITU96)




GT Format 4-specific parameters

  • The Use type value parameter; see GT Format 2 explanation
  • The Type value parameter; see GT Format 2 explanation
  • The Numbering plan parameter; see GT Format 3 explanation
  • The Encoding scheme parameter; see GT Format 3 explanation
  • The Nature of address parameter; see GT Format 1 explanation
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