ISUP SPRC Configuration Bytes (ANSI)

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 (Change and Status)
0x02 | Byte offset of range field | 0x00
0x03 | ANSI Service Indicator | 0x05
0x04 | ANSI Network Indicator | 0x02
0x05 | MTP Pause Logic Flag | 0x00 Disable [default] 0x01 Enable
Confusion (CFN) for Message Type Unknown
0x06 | Information Length | 0x06
0x07 | Message ID | 0x2F (CFN)
0x08 | Parameter Count | 0x01
0x09 | Parameter 1 ID | 0x12 (Cause Indicators)
0x0A | Parameter 1 Length | 0x02
0x0B | Parameter 1 Data[0] | 0x80 (Location=User)
0x0C | Parameter 1 Data[1] | 0xE1
0x0D-0F | Not Used |
Confusion (CFN) for Protocol Error
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] | 0xEF
0x1B–0x1D | Unused | 0x00
Unequipped CIC (UCIC)
0x1E | Information Length | 0x02
0x1F | Message ID | 0x2E
0x20 | Parameter Count | 0x00
0x21–0x27 | Unused |
0x28 | Number of probes to determine Average Delay | 10
0x29 | Probe Delay Threshold for Incoming Calls, 100 ms units | 100 ms
0x2A | Average Delay Threshold for Incoming Calls, 100 ms units | 50 ms
0x2B | Congestion Cleared Threshold for Incoming Calls, 100 ms units | 10 ms
0x2C | Number of probes to determine congestion cleared=Incoming Calls | 10
0x2D | Probe Delay Threshold for Outgoing Calls, 100 ms units | 100 ms
0x2E | Average Delay Threshold for Outgoing Calls, 100 ms units | 50 (5 s)
0x2F | Congestion Cleared Threshold for Outgoing Calls, 100 ms units | 10 (1 s)
0x30 | Number of probes to determine congestion cleared=Outgoing Calls | 10
0x31 | Defines the range of channels in GRS | 0xFF (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
Circuit Validation Response (CVR)
0x32 | Information Length | 0x08
0x33 | Message ID | 0xEB
0x34 | Parameter Count | 0x02
0x35 | Parameter 1 ID | 0xE6 (CVR)
0x36 | Parameter 1 Length | 0x01
0x37 | Parameter 1 Data[0] | 0x01
0x38 | Parameter 2 ID | 0xE5 (CGC)
0x39 | Parameter 2 Data Length | 0x01
0x3A | Parameter 2 Data[0] | 0x01
0x3C | Exchange Type | 0x00=Type A 0x01=Type B (default)
0x3D–0x6D | Not Used |
Release (REL) (INF Timer Expiry)
0x6E | Information length | 0x06
0x6F | Message ID | 0x0C
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 (Temp Failure)
0x75–0xC8 | Unused or User-defined |

American National Standards Institute. ANSI administers and coordinates the U.S. voluntary standardization and conformity assessment system for the
telecommunications industry. More details on these standards may be
viewed at www.ansi.org.
See Message Transfer Part.
Message delimiter (SS7 bit pattern - 01111110)
See Circuit Identification Codes.
See Common Channel Signaling.