SDCC

Use the SDCC subtab to view, create, edit, and delete SDCC terminations (D1-D3 bytes). These bytes provide a 192-kbps message channel for CTC alarms, maintenance, control, monitoring, and other CTC administration data.

Item

Description

Port

Displays the slot and port where the SDCC is provisioned.

OSPF Disabled on Link

Indicates whether OSPF is disabled on the link. OSPF should be disabled only when the slot and port connect to third-party equipment that does not support OSPF.

Port Service State

Indicates the SDCC port service state. Service states appear in the format: Primary State-Primary State Qualifier, Secondary State. For additional state information, see States.

Foreign

When checked, indicates that the far-end node is a non-ONS node.

Foreign IP

Displays the foreign node IP address.

LAPD Termination

If the SDCC is provisioned as OSI only, the SDCC LAP-D parameters appear:

  • AITS/UITS-Indicates the LAP-D acknowledgement type, either AITS (Acknowledged Information Transfer Service), or UITS (Unacknowledged Transfer Service).

  • Network/User-Indicates the LAP-D frame command/response role, either Network or User.

  • MTU-Shows the size of the Maximum Transfer Unit. The range is 512 to 1500 octets.

  • T200-Shows the time between SABME (Set Asynchronous Balanced Mode) frame transmissions. The range is 0.2 to 20 seconds.

  • T203-Shows the maximum time between LAP-D frame exchanges. The range is 4 to 120 seconds.

OSI SNPA

If the SDCC is provisioned for OSI, subnetwork point of attachment (SNPA) information appears:

  • Router-Indicates the ONS router and NSAP address.

  • Router State-Indicates whether the router is enabled or disabled.

Create

Displays the Create SDCC Termination dialog box to create a new SDCC termination.

Edit

Displays the Edit SDCC Termination dialog box to edit the highlighted SDCC termination.

Delete

Deletes the SDCC termination highlighted in the SDCC Terminations list.

Help

Displays context-sensitive help.