In this section:

This section provides you with conversion information between Pakistan (ISUP) and ITU (ISUP).

Pakistan (ISUP) to India (ISUP)

Pakistan has some national-specific messages and parameters that are incompatible with India.

The SCCP is equivalent for both variants.

The following table provides you with the Pakistan (ISUP) to India (ISUP) message conversion details.

Pakistan (ISUP) to India (ISUP) Message Conversion

Abbrv.

Code (decimal)

Message Type

Action

Message Processing

IAM

0x01 – (1)

Initial Address

PROCESS

Parameter processing.

ACM

0x06 – (6)

Address Complete

PROCESS

Parameter processing.

CON

0x07 – (7)

Connect

PROCESS

Parameter processing.

ANM

0x09 – (9)

Answer

PROCESS

Parameter processing.

CPG

0x2c – (44)

Call Progress

PROCESS

Parameter processing.

ONHOOK

0xfc – (252)

On Hook

DISCARD

Not supported in India.

HOLD

0xfd – (253)

End of Hold

DISCARD

Not supported in India.

IDENT

0xfe – (254)

Identification

DISCARD

Not supported in India.

TFO

0xff – (255)

Trunk Offer

DISCARD

Not supported in India.

The following table provides you with the Pakistan (ISUP) to India (ISUP) parameter conversion details.

Pakistan (ISUP) to India (ISUP) Parameter Conversion

Abbrev.

Code (decimal)

Parameter Name

Action

Parameter Processing

CPC

0x09 – (9)

Calling Party Category

PROCESS

Mapping of one byte value:

0x0c -> 0x0d,

0x0d -> 0x0a,

0x0e -> 0x0a,

0x10 -> 0x0a,

0x11 -> 0x0a,

else, same

N/A

0xfe – (254)

Number of Charging Units

DISCARD

Not supported in India.

N/A

0x0b – (11)

Redirecting Number

PROCESS

DISCARD if found in Address Complete (ACM), Answer (ANM), Call Progress (CPG), and Connect (CON)

N/A

0x0c – (12)

Redirection Number

PROCESS

DISCARD if found in ACM, ANM, CPG, and CON

India (ISUP) to Pakistan (ISUP)

Note

The Charge (CRG) message has the message compatibility parameter removed and the charge band number parameter passed through. The number of the charging unit parameter is not added in the resulting Pakistan CRG message as that optional parameter is used for meter pulses. The Level 4 Converter does not generate meter pulses and is not equipped to pass them through due to the unsupported number of charging unit parameter in India.

The following table provides you with the India (ISUP) to Pakistan (ISUP) message conversion details.

India (ISUP) to Pakistan (ISUP) Message Conversion

Abbrv.

Code (decimal)

Message Type

Action

Message Processing

ANM

0x09 – (9)

Answer

PROCESS

Parameter processing.

CRG

0x31 – (49)

Charge

PROCESS

Parameter processing.

The following table provides you with the India (ISUP) to Pakistan (ISUP) parameter conversion details.

India (ISUP) to Pakistan (ISUP) Parameter Conversion

Abbrev.

Code (decimal)

Parameter Name

Action

Parameter Processing

BCI

0x11 – (17)

Backward Call Indicator

PROCESS

DISCARD if found in ANM.

N/A

0x0b – (11)

Redirecting Number

PROCESS

DISCARD if found in ACM, ANM, CPG, and CON.

N/A

0x0c – (12)

Redirection Number

PROCESS

DISCARD if found in ACM, ANM, CPG, and CON.

N/A

0x38 – (56)

Message Compatibility

PROCESS

Discard if found in CRG.

 

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