Physical DS3 Port

The Physical DS3 Port object defines a port (physical interface) on a DS3 communications card, providing TDM connectivity into the PSTN.

Each Physical DS3 Port object is a child of an Adaptor object with adaptor type TD1000, TD1100, TD2000, or TD2100 (a TDM adaptor).

In the EMS System Explorer, the name shown for each Physical DS3 Port indicates

For example, 'Physical DS3 Port (Shelf B, Slot 3, Port 11)'.

To start using DS3 ports, you need to do the following:

Actions
Create Enable Activate
Delete Disable Deactivate
Apply Reset Statistics Refresh

Parameter

Access

Description
Channelization Read only Indicates whether this DS3 line is channelized into T1 or E1 channels. Values:
  • T1
  • E1
Line framing Change Inactive Specifies the DS3 framing structure used on this DS3 port. This must match the framing on the incoming DS3 line. Values:
  • M23
  • C-bit parity
The default is C-bit parity, which is normally used in the UK.
Line length Change Inactive Specifies the approximate length of the DS3 cable connected to this port. This is used to control the DS3 transceivers to ensure adequate signal strength on the line. Values:
  • Less than 600ft (180m)
  • More than 600ft (180m)
Line clocking Change Inactive Specifies whether the VP3000 or the remote system provides the clock source for this physical DS3 link. Values:
  • Local
    The VP3000 provides the clock source.
  • Loop (default)
    The VP3000 synchronizes to the clocking provided by the remote system.
Line status Read only Specifies the line status of the DS3 interface. One or more of the following values may be set:
  • AIS
    Alarm indication signal: a remote fault is affecting data that would otherwise be received at this port.
  • RAI
    Remote alarm indication: a remote system is not receiving the data that the local port is sending.
  • LOF
    Loss of framing: the local port is receiving a signal but is unable to synchronize with it to recover the data.
  • LOS
    Loss of signal: no receive signal can be detected.
Deactivation mode Change Specifies how child objects should be deactivated when deactivating this object. Values:
  • Normal (default)
    Shut down child objects normally before deactivating the object.
  • Quiesce
    Wait for existing child objects to become inactive before deactivating the object, but do not allow any new child objects to be activated.
  • Abort
    Deactivate the object and all its child objects immediately. (This may result in errors at remote systems.)
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 (UTC) at which the Alarm state last changed.
Alarm events reset timestamp Read only The time (UTC) at which the Attention Required alarm events was last reset to zero.
DS1 Port Attention Required alarms Read only The total number of DS1 Ports (and their child objects) associated with this DS3 Port that are in Attention Required state.
DS1 Port Attention Required alarm events Read only / Reset The total number of Attention Required alarms for all DS1 Ports (and their child objects) associated with this DS3 Port.
Summary child alarm state Read only Summarizes the alarm status for all children of this object. Values:
  • Clear
    No alarms are currently raised.
  • Attention Required
    Attention Required - one or more child objects are not operating normally, and need operator intervention.
  • Attend To Dependent
    Attention Required elsewhere - another object on which one or more child objects depend is not operating normally.
Requested status Read only Specifies whether an administrator has attempted to activate the port. 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 port. 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.