ISUP SPRC Configuration Bytes (ITU)

You can modify the parameters for Config Bytes 1–4, but you cannot move them to other byte locations. Other functions in the system access these parameters.

Byte

Description

Value

0x01

Parameter ID

0x16 (Range and Status)

0x02

Byte offset of range field

0x00

0x03

Service Indicator

0x05

0x04

Subservice Field

0x02

0x05

MTP Pause Logic Flag

0x00 Disable [default]

0x01 Enable

0x06–0x09

Unused

 

Confusion (CFN) for MCP

0x0A

Information Length

0x06

0x0B

Message ID

0x2F (CFN)

0x0C

Parameter Count

0x01

0x0D

Parameter 1 ID

0x12 (Cause Indicators)

0x0E

Parameter 1 Length

0x02

0x0F

Parameter 1 Data[0]

0x80 (Location=User)

0x10

Parameter 1 Data[1]

0xE1 (Cause 97=Protocol Error, Message Type Not Implemented)

0x11–0x13

Not Used

 

0x14

Information Length

0x06

0x15

Message ID

0x2F (CFN)

0x16

Parameter Count

0x01

0x17

Parameter 1 ID

0x12 (Cause Indicators)

0x18

Parameter 1 Length

0x02

0x19

Parameter 1 Data[0]

0x80 (Location=User)

0x1A

Parameter 1 Data[1]

0xEE (Cause 110=Protocol Error, Message with Unrecognized Parameters, Discarded)

Unequipped CIC (UCIC)

0x1E

Information Length

0x02

0x1F

Message ID

0x2E (UCIC)

0x20

Parameter Count

0x00

0x21–0x27

Not Used

 

0x28

Enable/Disable ACC Local Overload Algorithm

0x01=Enabled
0x02=Queue Probe

0x29

Outstanding QueueProbe Count for ACL0 Low Level

0x00

0x2A

Outstanding QueueProbe Count for ACL0 High Level

0x04

0x2B

Outstanding QueueProbe Count for ACL1 High Level

0x03

0x2C

Outstanding QueueProbe Count for ACL1 High Level

0x0B

0x2D

Outstanding QueueProbe Count for ACL2 Low Level

0x09

0x2E

Outstanding QueueProbe Count for ACL2 Low Level

0x0B

0x2F

Congestion Cleared Threshold for Outgoing Calls, 100 ms units

10 ms

0x0A

0x30

Number of probes to determine congestion cleared=Outgoing Calls

10

0x0A

0x31

Defines the range of channels in GRS

0x0C (Default value or indicates maximum number of CICs per span)

0x32

Defines whether purging is on or off in the case of CCS redundancy loss.

0x01 Enabled

0x3C

Exchange Type

0x00=Type A

0x01=Type B (default)

Unrecognized Message Processing

0x3D

Message Compatibility Parameter (MCP) Processing Notification

0x00=Do Not send PPL Event to Host

0x01=Send PPL Event to Host

0x3E

Unrecognized Parameter Pass On

0x00=Pass On Not Possible

0x01=Pass On Is Possible

Release (REL) for Message Not Supported

0x42

CGRS stop upon receipt of UCIC

0x00 = Stop

0x01 = Do not stop (Default)

0x46

Information Length

0x06

0x47

Message ID

0x0C (REL)

0x48

Parameter Count

0x01

0x49

Parameter 1 ID

0x12 (Cause Indicators)

0x4A

Parameter 1 Length

0x02

0x4B

Parameter 1 Data [0]

0x80 (Location=User)

0x4C

Parameter 1 Data [1]

0xE1 (Cause 97=Message Type Not Implemented)

ISUP Automatic Congestion Control (ACC)

0x50

Multiplicative Decrement Constant Beta_0 normalized to 128

0x80

0x51

Multiplicative Decrement Constant Beta_1

0x80

0x52

Multiplicative Decrement Constant Beta_2

0x80

0x53

Multiplicative Decrement Constant Beta_3

0x80

0x54

Multiplicative Decrement Constant Beta_4

0x7A

0x55

Multiplicative Decrement Constant Beta_5

0x76

0x56

Multiplicative Decrement Constant Beta_6

0x6E

0x57

Multiplicative Decrement Constant Beta_7

0x64

0x58

Multiplicative Decrement Constant Beta_8

0x5A

0x59

Multiplicative Decrement Constant Beta_9

0x5A

0x5A

Multiplicative Decrement Constant Beta_10

0x50

0x5B

Multiplicative Decrement Constant Beta_11

0x32

0x5C

Multiplicative Decrement Constant Beta_12

0x28

0x5D

Multiplicative Decrement Constant Beta_13

0x1E

0x5E

Multiplicative Decrement Constant Beta_14

0x0A

0x5F

Multiplicative Decrement Constant Beta_15

0x00

0x60

Additive Increase Constant - Alpha

0x02

0x61

Maximum Residual delay of a Queue Probe

0x64

0x62

Accuracy Limit

0x80

0x90

ACL0 Low Level Offset for CPU Utilization

0x5A

0x91

ACL0 High Level Offset for CPU Utilization

0x55

0x92

ACL1 Low Level Offset for CPU Utilization

0x53

0x93

ACL1 High Level Offset for CPU Utilization

0x5B

0x94

ACL2 Low Level Offset for CPU Utilization

0x58

0x95

ACL2 High Level Offset for CPU Utilization

0x5F

0x8C

Type of STACK

0x00=Non-BT Stack(default) 0x01=BT Stack

0x8D

CS ACL2 Fraction Allowed

0x20

Release (REL) for INF Timer Expiration

0x6E

Information Length

0x06

0x6F

Message ID

0x0C (REL)

0x70

Parameter Count

0x01

0x71

Parameter 1 ID

0x12

0x72

Parameter 1 Length

0x02

0x73

Parameter 1 Data [0]

0x80 (Location=User)

0x74

Parameter 1 Data [1]

0x9F (Cause 31=Normal Unspecified)

0x75–0xC8

Unused