Physical DS1 Port

The Physical DS1 Port object defines a DS1 connector on an AM or SG series card, or on a PB3000 adaptor.

Each Physical DS1 Port object is a child of an Adaptor object with adaptor type AM1000 Audio/MF Adaptor, AM1100 Audio/MF Adaptor, AM1200 Audio/MF Adaptor, AM1300 Audio/MF Adaptor, SG1200, SG1100, SG1000, or PB3000.

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

For example, Physical DS1 Port (Controller B, Slot 3, Port 11) "DS1/2/03/11".

In general, you will add Physical DS1 Port objects using the "create all ports" action on the parent Adaptor object, and should not need to create them individually.

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


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



For a Physical DS1 port on an Audio/MF Adaptor, you cannot change the physical encoding, line framing, line length or line clocking while the parent object is active. In addition, you cannot disable the port if an IDT Interface is associated with it and is enabled.


Parameter

Access

Description
Port name Read only A unique identifier for this device among all other devices on the Media Gateway. This identifier is used by other objects that need to reference this device.
Port number Create An identifier for this Physical DS1 Port. The valid port numbers depend on the parent adaptor type, as follows.
  • An AM1000 or AM1100 adaptor has four child DS1 ports, with port numbers 1 - 4 (corresponding to the physical ports on the adaptor card).
  • An AM1200, AM1300, or PB3000 adaptor has sixteen child DS1 ports, with port numbers 1 - 16 (corresponding to the physical ports on the adaptor card).
  • An SG1000, SG1100 or SG1200 adaptor has eight child DS1 ports, with port numbers 1 - 8 (corresponding to the physical ports on the adaptor card).
Additional information Change A text field that can be used to store information about the Physical DS1 Port. This field is optional; you can supply up to 64 characters of free-form text. The text wraps to the width of the field on screen, or you can use the Enter key to force linebreaks.
Description Read only Information about the controller, chassis slot number and port number associated with this port.
DS1 type Read only Specifies the type of DS1 link. Values:
  • Unknown
    This status is an error. To clear this status, you can perform a hot-swap on the owning adaptor.
  • T1
  • E1
Physical encoding Change Inactive 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)
    This value is required for T1s on a PB3000 Adaptor that are configured to have an ISDN D-channel running on timeslot 24, and is recommended for other T1s that are to be used for ISDN.
  • AMI
  • HDB3 (E1 only)
Line framing Change Inactive Specifies the framing used on this DS1 port. This setting must match the framing on the incoming DS1 line; check with the provider of the line if necessary. The following values are valid for DS1s on any adaptor card:
  • 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)
The following values are valid only for an AM* adaptor:
  • D4 MF
    D4 with CAS support enabled
  • ESF MF
    ESF with CAS support enabled
T1s for use with GR-303 or MF must be ESF MF or D4 MF.
  • For GR-303 this means that the whole DS1 is used for GR-303; for MF it can be shared with ISUP, or with ISDN B-channels (as part of an NFAS PRI), but it cannot carry an ISDN D-channel.
  • On an AM* adaptor card, note that DS0s used for ISUP or ISDN on a DS1 shared with MF will have CAS signaling enabled. This results in a minor degradation in voice quality, and also means that fax/modem and ISDN data calls may not operate correctly.
T1s for use as ISDN or ISUP trunks (not shared with GR-303 or MF) may be any of the other values. PB3000 T1s with an ISDN D-channel on timeslot 24 must be ESF (T1 only).
Line length Change Inactive 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 not valid if Line framing is set to E1 or E1 CRC. Values:
  • Up to 133ft (40m)
  • 133 - 266ft (40 - 80m)
  • 266 - 399ft (80-120m)
  • 399 - 533ft (120-160m)
  • Over 533ft (160m)
    This value must be used for PB3000 T1s with an ISDN D-channel on timeslot 24.
Line clocking Change Inactive Specifies whether the NE or the remote system provides the clock source for this physical DS1 link. Values:
  • Local
    The NE provides the clocking. This value must be used for PB3000 T1s with an ISDN D-channel on timeslot 24.
  • Loop (default)
    The NE 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.
If the interface has one or more of these defects in an elapsed second (a Severely Errored Second) for 5 consecutive seconds, it will be marked as "unavailable"; it will be returned to service when 5 consecutive seconds elapse with no defects.
Clock reference Change Inactive 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 Line 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. In the supplied configuration files, port 8 on an SG1100 or SG1200 adaptor is normally configured for use with a BITS source.
Supported terminations Read only Specifies which termination protocols this port supports. Values:
  • ISUP
  • MF (North America only)
  • MTP2
  • GR-303 (North America only)
  • ISDN (North America only)
MF Protocol Profile Change Inactive The MF Protocol Profile used by this port. Select from the displayed list of MF Protocol Profiles.
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
    Deactivating the Physical DS1 Port in quiesce mode will wait for all existing child objects using the port to be completed before deactivation. No new child objects using this port will be accepted during this deactivation period.
  • Abort
    Deactivate the object and all its child objects immediately. (This may result in errors at remote systems.)
Available uses Read only Indicates whether this port is able to carry an ISDN D-channel. If either of the two values ISDN D-channel (network-side) or ISDN D-channel (user-side) is set, this port is able to carry an ISDN D-channel. For a port on a PB3000 adaptor, this option is specified using the NE CRAFT interface; allowing the port to carry a D-channel means that timeslot 24 on the port is unavailable for media.
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. Values:
  • True
  • False (default)
Diagnostics - trace tag Change An optional diagnostics tag inserted into API tracing and PD logging for this object. This tag may include any ASCII characters.
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.
  • Activating
    Activation is in progress.
  • Deactivating
    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.