Physical DS1 Port

The Physical DS1 Port object defines a physical DS1 connector on either an MF adaptor card or an MTP2 adaptor card.

Each Physical DS1 Port object is a child of an Adaptor object with adaptor type either AM1000 Audio/MF Adaptor or SG1000 PSTN Signaling Adaptor.

In the EMS System Explorer, the name shown for each Physical DS1 Port indicates

For example, 'Physical DS1 Port (Shelf B, Slot 3, Port 11)'.

To start using DS1 ports, you need to do the following:


For a Physical DS1 port on an AM1000 Audio/MF Adaptor, you need to activate the port before you activate the parent Adaptor object. If a port is inactive when the adaptor is activated, you will not be able to activate it later without first deactivating the adaptor.


For a Physical DS1 port on an AM1000 Audio/MF Adaptor, you cannot change the physical encoding, line framing, line length or line clocking while the parent Adaptor object is active.


Parameter

Access

Description
DS1 type Read only Specifies the type of DS1 link. Values:
  • Unknown
  • T1
  • E1
Physical encoding Change Specifies the physical encoding used on this DS1 port. This setting must match the encoding of the incoming DS1 line; check with the provider of the line if necessary. Values:
  • B8ZS (T1 only)
  • AMI
  • HDB3 (E1 only)
Line framing Change Specifies the framing used on this DS1 port. This setting must match the adaptor card type and the framing on the incoming DS1 line; check with the provider of the line if necessary. Values for a SG1000 PSTN Signaling Adaptor:
  • D4 (T1 only)
    AT&T D4 format DS1 (T1.107)
  • ESF (T1 only)
    Extended SuperFrame DS1 (T1.107)
  • E1 (E1 only)
    ITU-T Recommendation G.704 (Table 4a)
  • E1 CRC (E1 only)
    ITU-T Recommendation G.704 (Table 4b)
Values for a AM1000 Audio/MF Adaptor:
  • D4 MF
    D4 with CAS support enabled
  • ESF MF
    ESF with CAS support enabled
Line length Change Specifies the approximate length of the DS1 cable connected to this port. This is used to control the transceivers to ensure adequate signal strength on the line. This field is valid only if DS1 type is T1. Values:
  • Up to 133ft (40m)
  • 133 - 266ft (40 - 80m)
  • 266 - 399ft (80-120m)
  • 399 - 533ft (120-160m)
  • Over 533ft (160m)
Line clocking Change Specifies whether the VP3000 or the remote system provides the clock source for this physical DS1 link. Values:
  • Local
    The VP3000 provides the clocking.
  • Loop (default)
    The VP3000 synchronizes to the clocking provided by the remote system.
Line status Read only Specifies the line status of the DS1 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.
Clock reference Change Specifies whether the clocking on this link is used as a general clock reference, or is used just for this link. This option applies only if the Clocking field is set to Loop; if it is set to Local, this option must be set to No. Values:
  • No (default)
    The DS1 link's clocking is used only for this link.
  • Yes
    The DS1 link's clocking is used as a general clock reference.
  • BITS
    Building Integrated Timing Supply: this DS1 link is used only as a general clock reference, and does not carry data.
Supported terminations Read only Specifies which termination protocols this port supports. Values:
  • ISUP
  • Line
  • MF
  • MTP2
  • IVR
  • ATM
Propagation delay Read only An estimated propagation delay for the DS1 line, in milliseconds.
Run in Bit Error Rate Testing mode Change Specifies whether Bit Error Rate Testing should be active on this port (the DS1 loops back all received data, and is not available for external communications). Values:
  • True
  • False (default)
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.
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 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.