SCCP:GTT Association Configuration

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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.

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

SCCP:GTT Association Configuration

Latest revision as of 08:04, 18 April 2018

Contents

Action-specific configuration parameters

GT Format 1-specific parameters

GT Format 2-specific parameters

GT Format 3-specific parameters

GT Format 4-specific parameters

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@@ Line 1: / Line 1: @@
-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.
+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 description:
+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 Table 73 - SCCP protocol variant  08D0C9EA79F9BA .
+*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:
 {| class="wikitable" border="1"
-! width="150" style="background:#efefef;" |Connection mode
+! width="150" style="background:#efefef;" |Global Title Format Type
 ! width="350" style="background:#efefef;" |Description
 |-
-| Normal|| MTP2 layer is used in conjunction with an above MTP3 layer
+| Not used|| Indicates that no global title is used
 |-
-| HSL|| MTP2 layer high speed link is used in conjunction with an above MTP3 layer
+| 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
 |}
-Table  SEQ Table \* ARABIC 83 - SCCP GT format type
-Global Title Format Type
-Description
-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.
-TB640_SS7_SCCP_GT_FORMAT_TYPE_1
-Global title   format 1.
-TB640_SS7_SCCP_GT_FORMAT_TYPE_2
-Global title   format 2.
-TB640_SS7_SCCP_GT_FORMAT_TYPE_3
-Global title   format 3.
-TB640_SS7_SCCP_GT_FORMAT_TYPE_4
-Global title format   4.
 ----
@@ Line 63: / Line 41: @@
 === Action-specific configuration parameters ===
 *The action type parameter (ActionType) specifies the type of action for this association. Allowable values:
 {| class="wikitable" border="1"
-! width="150" style="background:#efefef;" |Connection mode
+! width="150" style="background:#efefef;" |SSN value to identify SCCP user
 ! width="350" style="background:#efefef;" |Description
 |-
-| Normal|| MTP2 layer is used in conjunction with an above MTP3 layer
+| 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.
 |-
-| HSL|| MTP2 layer high speed link is used in conjunction with an above MTP3 layer
+| 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.
 |}
-Table  SEQ Table \* ARABIC 84 - SCCP GT action type
-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.
-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.
-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.
-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.
@@ Line 137: / Line 95: @@
 === 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:
 {| class="wikitable" border="1"
-! width="150" style="background:#efefef;" |Connection mode
+! width="150" style="background:#efefef;" |GT Odd/Even Type
 ! width="350" style="background:#efefef;" |Description
 |-
-| Normal|| MTP2 layer is used in conjunction with an above MTP3 layer
+| Not used|| Not used
 |-
-| HSL|| MTP2 layer high speed link is used in conjunction with an above MTP3 layer
+| Odd|| Odd number of address signals
+|-
+| Even|| Even number of address signals
 |}
-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.
@@ Line 173: / Line 116: @@
 {| class="wikitable" border="1"
-! width="150" style="background:#efefef;" |Connection mode
+! width="150" style="background:#efefef;" |GT Nature of Address Indicator
 ! width="350" style="background:#efefef;" |Description
 |-
-| Normal|| MTP2 layer is used in conjunction with an above MTP3 layer
+| Not used|| Not used
+|-
+| Subscriber|| Subscriber number
+|-
+| National|| National significant number
 |-
-| HSL|| MTP2 layer high speed link is used in conjunction with an above MTP3 layer
+| International|| International number
 |}
-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.
@@ Line 210: / Line 133: @@
 === 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 (don’t care) for GTT association operation.
+*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.
+*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
@@ Line 218: / Line 141: @@
 === GT Format 3-specific parameters ===
 *The '''Use type value''' parameter; see GT Format 2 explanation
 *The '''Type value''' parameter; see GT Format 2 explanation
@@ Line 230: / Line 152: @@
 {| class="wikitable" border="1"
-! width="150" style="background:#efefef;" |Connection mode
+! width="150" style="background:#efefef;" |GT Numbering Plan Type
 ! width="350" style="background:#efefef;" |Description
 |-
-| Normal|| MTP2 layer is used in conjunction with an above MTP3 layer
+| Not used|| Not used
 |-
-| HSL|| MTP2 layer high speed link is used in conjunction with an above MTP3 layer
+| 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)
 |}
-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)
@@ Line 297: / Line 180: @@
-*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:
+*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:
 {| class="wikitable" border="1"
-! width="150" style="background:#efefef;" |Connection mode
+! width="150" style="background:#efefef;" |GT Encoding Scheme Type
 ! width="350" style="background:#efefef;" |Description
 |-
-| Normal|| MTP2 layer is used in conjunction with an above MTP3 layer
+| Not used|| Not used
 |-
-| HSL|| MTP2 layer high speed link is used in conjunction with an above MTP3 layer
+| BCD odd || BCD odd
+|-
+| BCD even|| BCD even
+|-
+| National ES || National-specific ES (Allowed only in ITU96)
 |}
-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)
@@ Line 342: / Line 204: @@
 === GT Format 4-specific parameters ===
-*The use type value parameter; see GT Format 2 explanation
+*The '''Use type value''' parameter; see GT Format 2 explanation
-*The 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 '''Numbering plan''' parameter; see GT Format 3 explanation
-*The encoding scheme 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
-[[category:Needs revising]]