Signaling Link

Each Signaling Link object is a child of a Signaling Linkset object.

The Signaling Link object contains information about a link to an adjacent signaling point. There can be up to 16 links to each adjacent signaling point and there is a Signaling Link object for each link. You must create at least one signaling link for each signaling linkset. Additional signaling links may be created at a later stage to increase the capacity of a linkset to an adjacent signaling point.

For initial configuration, set the following parameters:

During initial link setup and testing, you may also want to use the Run in loopback mode parameter to configure the VP3000 for running a Bit Error Rate Test on the new link.

Object-Specific Actions
Inhibit To stop allowing traffic to use this link (for example in preparation for maintenance work on the link), click on the Inhibit pushbutton. The Last action status field shows the results of the action. This pushbutton is grayed if the link is already inhibited, or if it is disabled. Note that you cannot inhibit all links in a Signaling Linkset at the same time.
Uninhibit To allow traffic to use an inhibited link again, click on the Uninhibit pushbutton. The Last action status field shows the results of the action. This pushbutton is grayed if the link is not already inhibited, or if it is disabled.

Parameter

Access

Description
Signaling link code Create Unique index identifying the link within the linkset. This value must be the same at both ends of the link. Range: 0 - 15.
Link name Change Unique user-friendly name identifying the link. Specify a name of up to 30 characters. If a name is not specified, the EMS displays only the signaling link code.
Protocol Profile Change MTP2 Protocol Timer Profile to associate with the link. You cannot change this field unless the signaling link is disabled. Select from the displayed list of profiles. This field defaults to the default MTP2 Protocol Timer Profile.
Timer Profile Change Signaling Link Timer Profile to associate with the link. Select from the displayed list of profiles. This field defaults to the default Signaling Link Timer Profile.
MTP2 card Create Name of the MTP2 card which owns the serial controller that will process signals passed on this link. Select from the displayed list of MTP2 cards.
MTP2 DS0 Create Identifies a DS0 connection for the link. This value must be the same at both ends of the link. Select from the list of DS1 lines to display a list of the DS0 connections available over that line. Note that the list of DS1 lines excludes any which have the Clock Reference set to BITS. Range: 0 - 32.
Run in loopback mode Change Specifies whether this link is looping back SS7 signaling traffic in order to run a Bit Error Rate Test. You must deactivate and disable the Signaling Link before you can change this parameter. Values:
  • True
    The link is running in loopback mode. The VP3000 sends back all received SS7 signaling data unchanged (so that the sender can check it for errors against the original sent data), and does not attempt to process it.
  • False (default)
    The link is running in normal operational mode.
Link status Read only Specifies the current SS7 functional status of the link, as described in Recommendation Q.704. This is set to one or more of the following values:
  • Local blocked
  • Remote blocked
  • Local inhibited
  • Remote inhibited
  • Failed
  • Deactivated
Current congestion level Read only Specifies whether the link is currently congested. Range: 0 - 3. A value of zero indicates no congestion.
Last action status Read only The status of the last Inhibit, Uninhibit, or Test action attempted on this link. Values:
  • No action performed
  • Inhibit succeeded
  • Inhibit in progress
  • Inhibit failed - rejected by remote destination
  • Inhibit failed - no route to send request
  • Inhibit failed - timed out
  • Inhibit failed - last available link for Route
  • Uninhibit succeeded
  • Uninhibit in progress
  • Uninhibit failed
Last action time Read only The time at which the last Inhibit, Uninhibit, or Test action was attempted on this link.
Alarm state Read only Specifies whether any alarms are currently raised for this object. Values:
  • Clear
    No alarms are currently raised.
  • Attention Required
    Attention Required - the object is not operating normally, and needs operator intervention.
  • Attend To Dependent
    Attention Required elsewhere - another object on which this object depends is not operating normally.
Alarm log correlator Read only Identifier of the log message for the event that caused the last Attention Required alarm state for this object. This field is reset when the Attention Required alarm events field is reset to zero.
Attention Required alarm events Read only / Reset Number of times (since the alarm count was reset) that this object's alarm state has gone to Attention Required.
Alarm state changed timestamp Read only The time at which the Alarm state last changed.
Alarm events reset timestamp Read only The time at which the Attention Required alarm events was last reset to zero.
Diagnostics - log level Change Specifies the level of logs recorded for this object. Logs with a priority equal to or greater than the priority specified are recorded. Set to Default level to use the system-wide default level. Values:
  • Level 10 (diagnostics)
  • Level 20 (verbose statistics)
  • Level 30 (verbose operational)
  • Level 40 (statistics)
  • Level 50 (audit)
  • Level 60 (operational)
  • Level 70 (unexpected)
  • Level 80 (error)
  • Level 90 (fatal)
  • Default level (default)
Diagnostics - API trace enabled Change Specifies whether API tracing is enabled for this object. If set to True, the Diagnostics - trace tag must be specified. Values:
  • True
  • False (default)
Diagnostics - trace tag Change The diagnostics tag inserted into API tracing and PD logging for this object. This tag may include any ASCII characters other than whitespace.
Requested status Read only Specifies whether an administrator has attempted to activate the Signaling Link. Values:
  • Active
    The object has been activated.
  • Inactive
    The object has not been activated or has been deactivated.
  • Disabled
    The object has been disabled.
Actual status Read only Specifies the current status of the Signaling Link. Values:
  • Active
    The object is active.
  • Going Active
    Activation is in progress.
  • Going Inactive
    Deactivation is in progress.
  • Inactive
    The object is inactive.
  • Disabled
    The object has been disabled.
  • Activation Failed
    The object is inactive because an activation attempt has failed.
  • Failed
    The object was active but has failed.
  • Quiescing
    The object is preparing for normal deactivation. It is operating normally but will not accept any new users.
  • Waiting For Parent
    The object cannot be used because its parent object is not yet active.
  • Parent Failed
    The object cannot be used because its parent object has failed.