ISUP configuration reference

This topic presents the ISUP configuration file parameters:

General parameters

The general parameters control the overall operation of the ISUP layer process.

Note: All ISUP timer values are in seconds.

Parameter

Default

Valid values

Description

MAX_SAPS

1

1

Maximum number of user applications.

MAX_NSAPS

1

1 through 255

Maximum number of interfaces with the MTP 3 network layer.

MAX_GROUPS

32

0 through 65535

Maximum number of circuit groups managed by the ISUP layer.

MAX_ROUTES

16

0 through 65535

Maximum number of routes.

MAX_CIRCUITS

96

0 through 65535

Maximum number of circuits to be managed by the ISUP layer.

MAX_CALLREFS

16

0 through 65535

Maximum number of call references (connections) that ISUP can keep track of simultaneously.

OPC

None

N/A

Point code of this node, specified as x.y.z (three bytes, decimal value, separated by periods), as a hexadecimal value preceded by 0x (0x123), or as a decimal value.

PC_FORMAT

DEFAULT

DFLT

INTL

JNTT

Point code format.

DFLT = Point codes are interpreted and displayed as 24-bit 8.8.8 values.

INTL = Point codes are interpreted and displayed as 14-bit 3.8.3 values.

JNTT = Use for both Japan NTT and TTC networks. Point codes are interpreted and displayed as 16-bit mcode.scode.ucode values with the U-code in the most significant 7 bits, the S-code in the next 4 bits, and the M-code in the least significant 5 bits.

CLLINAME

None

N/A

Common language location identifier (CLLI) name assigned to this node (exactly 11 ASCII characters).

T18_TIMER

12

0 through 65535

Time to wait for a response to a group blocking message that was sent.

T19_TIMER

60

0 through 65535

Time to wait for a response to an initial group blocking message that was sent.

T20_TIMER

12

0 through 65535

Time to wait for a response to a group unblocking message that was sent.

T21_TIMER

60

0 through 65535

Time to wait for a response to an initial group unblocking message that was sent.

T22_TIMER

12

0 through 65535

Time to wait for a response to a circuit group reset message that was sent.

T23_TIMER

60

0 through 65535

Time to wait for a response to an initial circuit group reset message that was sent.

T28_TIMER

10

0 through 65535

Time to wait for a CQR after sending a CQM.

TGRES_TIMER

5

0 through 65535

Group reset timer.

TFGR_TIMER

5

0 through 65535

ANSI first group received timer.

TRACE_EVENT

FALSE

TRUE

FALSE

If TRUE, enables event logging.

TRACE_DATA

FALSE

TRUE

FALSE

If TRUE, enables data tracing.

TRACE_WARNING

FALSE

TRUE

FALSE

If TRUE, enables logging of unexpected information element value warnings.

TRACE_ERROR

FALSE

TRUE

FALSE

If TRUE, enables logging of message encoding errors.

IG_PASS_ALNG

FALSE

TRUE

FALSE

If TRUE, messages are sent in pass-along format.

ITU_UCICS

FALSE

TRUE

FALSE

If TRUE, enables an ITU configuration to send UCIC messages. If FALSE, UCICs are not sent.

EXT_ELMTS

FALSE

TRUE

FALSE

If TRUE, enables the sending and receiving of extended elements.

RAW_MSGS

FALSE

TRUE

FALSE

If TRUE, enables the sending and receiving of raw messages.

ONE_GRPMSG

FALSE

TRUE

FALSE

If TRUE, the stack reacts to the first CGB and GRS group message (ANSI only).

QCONGONSET1

600

0 through 65535

Queue to the host application congestion level 1 onset.

QCONGABATE1

400

0 through 65535

Queue to the host application congestion level 1 abatement threshold.

QCONGONSET2

900

0 through 65535

Queue to the host application congestion level 2 onset.

QCONGABATE2

700

0 through 65535

Queue to the host application congestion level 2 abatement threshold.

QCONGONSET3

1200

0 through 65535

Queue to the host application congestion level 3 onset.

QCONGABATE3

1000

0 through 65535

Queue to the host application congestion level 3 abatement threshold.

MCONGONSET1

20

0 through 65535

TX percentage of memory remaining congestion level 1 onset.

MCONGABATE1

25

0 through 65535

TX percentage of memory remaining congestion level 1 abatement threshold.

MCONGONSET2

10

0 through 65535

TX percentage of memory remaining congestion level 2 onset.

MCONGABATE2

15

0 through 65535

TX percentage of memory remaining congestion level 2 abatement threshold.

MCONGONSET3

5

0 through 65535

TX percentage of memory remaining congestion level 3 onset.

MCONGABATE3

8

0 through 65535

TX percentage of memory remaining congestion level 3 abatement threshold.

RMTUSRUNAVL

FALSE

TRUE

FALSE

If TRUE, configures the stack to start in remote user unavailable mode.

GRPRESETEVENT

FALSE

TRUE

FALSE

If TRUE, configures the stack to send up one group reset event instead of many separate circuit reset events.

SLSFROMCICS

TRUE

TRUE

FALSE

If TRUE, sets the ANSI SLS value to the bottom bits of the CIC.

DSBLRMTUSRUNAVL

FALSE

TRUE

FALSE

If TRUE, disables appropriate user part test procedure (for SSURN among others).

RESTARTT7

FALSE

TRUE

FALSE

If TRUE, restarts T7 when an inbound INR is received (for SSURN among others).

DISABLEACL

FALSE

TRUE

FALSE

If TRUE, disables automatic congestion control (for SSURN among others).

END

N/A

N/A

Marks the end of the general section. This parameter is required.


SAP parameters

The service access point (SAP) parameters define the characteristics of the ISUP layer presented to the user applications.

Note: The ISUP layer software allows for configuration of only a single ISUP user SAP. Therefore, only one application can use the ISUP layer at a time. Timer default values in parentheses are ITU values.

Parameter

Default

Valid values

Description

USER_SAP

None

0 through MAX_SAPS

SAP number

SWITCH_TYPE

ANSI92

ITU

ITUWHITE

ITUBLUE

ITU97

ETSIV2

ETSIV3

Q767

ANSI88

ANSI92

ANSI95

JNTT

Protocol variant employed for this application. Must match one of the switch types defined in the NSAP definition section.

For Japan TTC, use JNTT and the Global Messaging Toolkit.

MASK

None

N/A

Routing mask for circuit selection by ISUP. Maximum of 20 ASCII characters where a 1 indicates the digit is significant for route matching and a 0 indicates the digit is ignored for route matching. For example, 1110000000 causes ISUP to treat the first three digits of a called address as significant when route matching.

MAX_USER2USER

20

0 through 0xff

Maximum length of user-to-user information in an IAM.

T1_TIMER

12 (15)

0 through 65535

Time to wait for a response to a release message sent.

T2_TIMER

0

0 through 65535

Time to wait for a resume message after a suspend message received.

T5_TIMER

60 (300)

0 through 65535

Time to wait for a response to initial release message sent.

T6_TIMER

30

0 through 65535

Time to wait for a resume message after a suspend (network) message received.

T7_TIMER

25

0 through 65535

Time to wait for a response (for example, ACM, ANS, or CON) to the latest address message sent.

T8_TIMER

12

0 through 65535

Time to wait for a continuity message after receiving IAM requiring continuity check.

T9_TIMER

180

0 through 65535

Time to wait for answer of outgoing call after ACM message received.

T16_TIMER

12

0 through 65535

Time to wait for a response to a reset message sent.

T17_TIMER

12 (300)

0 through 65535

Time to wait for a response to initial reset message sent.

T27_TIMER

240

0 through 65535

Time to wait for a continuity check request after ensuing continuity check failure indication is received. See the TCCR_TIMER field.

T31_TIMER

0 (disabled)

0 through 65535

Time to wait before reusing call reference after a connection is cleared.

T33_TIMER

15

0 through 65535

Time to wait for a response to information request message sent.

TEX_TIMER

0 (disabled)

0 through 65535

Time to wait before sending ANSI exit message.

TCRM_TIMER

4

0 through 65535

Time to wait for a response to a circuit reservation message sent.

TCRA_TIMER

10

0 through 65535

Time to wait for an IAM message after circuit reservation acknowledgment message sent.

TCCR_TIMER

20 (240)

0 through 65535

Time to wait for CCR after the first COT indicating failure. See the T27_TIMER field.

END

N/A

N/A

Marks the end of the SAP section. This parameter is required.


NSAP parameters

The NSAP parameters define the characteristics of the ISUP interface to the MTP 3 layer:

Parameter

Default

Valid values

Description

NSAP

None

1 through 32

Name of the NSAP section for the rest of the parameters.

SWITCH_TYPE

ANSI92

ITU

ITUWHITE

ITUBLUE

ITU97

ETSIV2

ETSIV3

Q767

ANSI88

ANSI92

ANSI95

JNTT

Protocol variant employed for this MTP interface. Must match one of the switch types defined in the MTP 3 NSAP definition section.

For Japan TTC, use JNTT and the Global Messaging Toolkit.

SSF

NATIONAL

NATIONAL

INTERNATIONAL

0 through 3

RESERVED

SPARE

Value used in the subservice field (SSF) of the service information octet in outgoing ISUP messages on this MTP interface.

MTP_SAP

0

0 through 255

MTP service access point to which to bind ISUP. Must match one of the NSAP numbers defined in the MTP configuration file; must be unique among all user parts that use MTP (SCCP, TUP).

END

N/A

N/A

Marks the end of the NSAP section. This parameter is required.


Circuit group parameters

The circuit group parameters specify the characteristics of each of the circuit groups to be managed by the ISUP layer. One entry is made for each circuit group.

Note: Timer default values in parentheses are ITU values.

Parameter

Default

Valid values

Description

CIRCUIT

None

1 through
MAX_CIRCUITS

Number of the first circuit in this group. Circuits in this group are numbered from this value to (value + NUM_CIRCUITS - 1). This range must be unique for all circuits defined. This value is used by the application and the ISUP layer to identify circuits, but has no meaning to the far exchange.

CIC

1

0 through 4095

Circuit identification code (CIC) of the first circuit in this group. Circuits in this group are assigned CICs from this value to (value + NUM_CIRCUITS - 1). The number range must agree with the CICs assigned to this circuit group at the far exchange.

DPC

None

N/A

Destination point code to which this circuit group connects.

ALT_OPC

0

N/A

Originating Point code for this set of circuits. If not present, the OPC is set to OPC from the NSAP. This needs to be used carefully with the appropriate MTP configuration changes.

CIRCUIT_TYPE

INCOMING

INCOMING

OUTGOING

BOTHWAY

Direction of calls allowed on this circuit group.

CONTROL_TYPE

NONE

NONE

ALL

ODD_EVEN

Dual seizure control.

GROUP_CHARS

0

0 through 0xff

When non-zero, this value is placed in the group characteristics of the CVR message.

SWITCH_TYPE

ANSI92

ITU

ITUWHITE

ITUBLUE

ITU97

ETSIV2

ETSIV3

Q767

ANSI88

ANSI92

ANSI95

JNTT

Protocol variant employed for this application. Must match one of the switch types defined in the NSAP definition section.

For Japan TTC, use JNTT and the Global Messaging Toolkit.

SSF

0xff (NSAP)

NATIONAL

INTERNATIONAL

0 through 3

RESERVED

SPARE

0xff

NSAP value is the default; however, putting a value in this field overrides the default.

NUM_CIRCUITS

1

1 through 4095

Number of circuits in this circuit group.

T4_TIMER

0

0 through 65535

Time to wait for call modification complete message.

T12_TIMER

12 (15)

0 through 65535

Time to wait for response to blocking message.

T13_TIMER

60 (300)

0 through 65535

Time to wait for a response to the initial blocking message sent.

T14_TIMER

12 (15)

0 through 65535

Time to wait for a response to an unblocking message sent.

T15_TIMER

60 (300)

0 through 65535

Time to wait for a response to the initial unblocking message sent.

TVAL_TIMER

30

0 through 65535

ANSI circuit validation timer.

TPAUSE_TIMER

2

0 through 65535

Time to wait after MTP pause before resetting circuits.

END

N/A

N/A

Marks the end of this circuit group definition. This parameter is required.