A.4 Contents of messages
23.0663GPPRelease 17Stage 2Support of Mobile Number Portability (MNP)Technical realizationTS
This clause specifies the content of the following messages:
On the ISUP interface:
IAM.
On the MSC – NPDB interface:
"query";
"routing";
"result".
Messages in the MSC – NPDB interface are mapped into ETSI Core INAP or ANSI IN Query messages according to the protocols on this interface. This is listed in the following table:
|
Messages in MSC-NPDB interface |
INAP messages |
ANSI IN Query messages |
|
"query" |
INITIAL DP |
ProvideInstruction:Start |
|
"routing" |
CONNECT CONTINUE |
ConnectionControl:Connect |
|
"result" |
CONTINUE RELEASE CALL |
ConnectionControl:Connect |
In the tables that follow, information elements are shown as mandatory (M), conditional (C) or optional (O). A mandatory information element shall always be present. A conditional information element shall be present if certain conditions are fulfilled; if those conditions are not fulfilled it shall be absent. An optional element may be present or absent, at the discretion of the application at the sending entity.
A.4.1 Messages on the ISUP interface
A.4.1.1 IAM for ETSI ISUP interface
This message is specified in [14]. It is necessary for the IAM to contain the information needed to route the call to the subscription network of the ported subscriber. The ways in which this may be coded are shown in [14].
A.4.1.2 IAM for ANSI ISUP interface
This message is specified in [8] and [9]. It is necessary for the IAM to contain the information needed to route the call to the subscription network of the ported subscriber. The ways in which this may be coded are shown in [8] and [9].
A.4.2 Messages on the MSC – NPDB interface
A.4.2.1 INITIAL DP
This message is specified in [5]. The following information elements are required:
|
Information element name |
Required |
Description |
|
Service Key |
M |
Identifies the requested IN service (MNP query) |
|
Called Party Number |
M |
The possibly ported MSISDN |
A.4.2.2 INITIAL DP negative response
This message is specified in [5]. The negative response information element can take the following values:
1. missing parameter;
2. unexpected data value;
3. unexpected parameter;
4. system failure.
A.4.2.3 CONNECT
This message is specified in [5]. It shall be ensured that the information in the Connect message shall be aligned with the coding supported in the ISUP signalling.
A.4.2.4 CONTINUE
This message is specified in [5]. This message does not contain any information element.
A.4.2.5 RELEASE CALL
This message is specified in [5]. The following information elements are required:
|
Information element name |
Required |
Description |
|
Cause |
M |
Indicates the reason for releasing the call |
A.4.2.6 ProvideInstruction:Start
|
Parameter |
Type |
Number of Octets |
Contents |
|
Package Type Identifier |
M |
1 |
Query with Permission |
|
Component Type Identifier |
M |
1 |
Invoke (last) |
|
Operation Code Identifier |
M |
1 |
National TCAP |
|
Operation Code |
M |
2 |
provideInstruction:Start (reply required) |
|
Service Key |
M |
11* |
10 digit called party number digits |
|
Digits (calling party number) |
M 1 |
6-9 |
3,6 or 10 ANI digits |
|
Digits (LATA) |
M 1 |
6 |
LATA ID |
|
Originating Station Type |
M 1 |
1 |
Binary value of ANI II digits |
Note:
* = Value specific for number portability
1 = This mandatory parameter is required for the message but the content is not essential for number portability.
A.4.2.7 ConnectionControl:Connect
|
Parameter |
Type |
Number of Octets |
Contents |
|---|---|---|---|
|
Package Type Identifier |
M |
1 |
Response |
|
Component Type Identifier |
M |
1 |
Invoke (last) |
|
Operation Code Identifier |
M |
1 |
National TCAP |
|
Operation Code |
M |
2 |
connectionControl:Connect (no reply required) |
|
Digits (Carrier) |
M 1 |
6 |
3 or 4 digit CIC |
|
Digits (Routing Number) |
M |
9* |
10 digit RN or Dialed Number |
|
Billing Indicators |
M 1 |
4 |
Unspecified |
Note:
* = Value specific for number portability
1 = This mandatory parameter is required for the message but the content is not essential for number portability.
Annex B (normative):
Handling of Non-Call Related Signalling