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In the Column List:

  • P = Primary key
  • M = Mandatory field
  • F = Foreign key
  • In the Data Type column, varchar/nvarchar means that the data type is varchar except in multi-language databases that use Unicode, in which case the data type is nvarchar.


This table contains information regarding all of the states of the intersite link, in chronological order as derived from data supplied by T-Server.

To assist you in preparing supplementary documentation, click the following link to download a comma-separated text file containing information such as the data types and descriptions for all columns in this table: Download a CSV file.

Hint: For easiest viewing, open the downloaded CSV file in Excel and adjust settings for column widths, text wrapping, and so on as desired. Depending on your browser and other system settings, you might need to save the file to your desktop first.

Column List


Column Data Type P M F Description
ID numeric(16) X X This unique, autonumbered ID of this record. This is the primary key.
LinkID varchar(50) X X This is the intersite link ID, which identifies the association between two calls.
Seq int X The sequence number of the changes in this link history.
ChangeType int X IS-Link history record type: added, moved, or deleted. One of the following:
  • 0—unknown–Reserved.
  • 1—added–IS-Link addition.
  • 2—moved–IS-Link move.
  • 3—deleted–IS-Link deletion.


State int The link state of the history record. One of the following values:
  • 0—unknown–Reserved.
  • 1—active–IS-Link is active.
  • 2—terminated–IS-Link is terminated.
  • 3—failed–IS-Link has failed; no pair is expected on the other site.


CallID varchar(50) A reference to the call that is currently associated with this history.
PrevCallID varchar(50) A reference to the call that was previously associated with this history.
Added datetime X The GMT-equivalent date and time when the history record was added.
Added_ts int The UTC-equivalent value of the ADDED field.
Added_tcode int A reference, derived from the value of the ADDED_TS field, to a record in the G_TIMECODE table.
GSYS_DOMAIN int Contains the data source session ID (DSS_ID) for the session that was active when the data was processed by ICON. For more information, see the description in System Fields (for DB2Microsoft SQL Server, Oracle, or PostgreSQL, respectively).
GSYS_PARTITION int A key that is used for partitioning.
GSYS_SYS_ID int System ID. Reserved for future use.
GSYS_SEQ bigint Insert Sequence. Not unique.
GSYS_USEQ bigint Update Sequence. Not unique.
GSYS_TS datetime Reserved
GSYS_TC int Reserved
GSYS_EXT_VCH1 varchar(255) Reserved
GSYS_EXT_VCH2 varchar(255) Reserved
GSYS_EXT_INT1 int Reserved
GSYS_EXT_INT2 int Reserved
This page was last edited on January 10, 2020, at 15:27.
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