The DS1 Over DS3 Port object defines an individual DS1 channel that provides a T1 or E1 connection over a DS3 port.
Each DS1 Over DS3 Port object is a child of a DS3 Port object.
For example, DS1 Over DS3 Port (Controller A, Slot 2, Port 3, Chan 13) "DS3/1/02/03/013".
In general, you will add DS1 Over DS3 Port objects using the "create all ports" action on the DS3 port's parent Adaptor object, and should not need to create them individually.
Parameter
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Access
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Description
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Port name
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Read only
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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.
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Additional information
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Change
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A text field that can be used to store information about the DS1 Over DS3 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.
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Description
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Read only
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Information about the controller, chassis slot number and port number associated with this port.
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DS1 type
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Read only
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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
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Channel number
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Create
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Primary rate channel number of this DS1 channel within the DS3 port. The valid port numbers depend on the Channelization setting of the parent DS3 port:
- A DS3 port with T1 channelization has 28 child DS1 ports numbered 1 - 28.
- A DS3 port with E1 channelization has 21 child DS1 ports numbered 1 - 21.
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Line framing
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Change Inactive
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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 DS1s on a PB4000 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.
T1s for use as ISDN or ISUP trunks (not shared with GR-303 or MF) may be any of the other values.
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Line status
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Read only
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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.
- BER
Bit error rate: a high bit error rate (in the region of 1 x 10^-3 or above) has been detected. This value can appear only on an interface below a PB4000 adaptor card.
If the interface has one or more of these defects for 5 consecutive seconds, it will be marked as "unavailable"; it will be returned to service when 5 consecutive seconds elapse with no defects.
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Bit Error Rate
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Read only
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This field appears only on an interface below a PB4000 adaptor card. It gives an indication of the current rate at which bit errors are being detected on the DS1 interface. Values:
- Not Applicable (line out of service)
- BER being calculated (figure available shortly)
- BER > 3.2 x 10^-3
- 3.2 x 10^-4 < BER < 3.2 x 10^-3
- BER < 3.2 x 10^-4, more accuracy not yet available
- 3.2 x 10^-5 < BER < 3.2 x 10^-4
- BER < 3.2 x 10^-5, more accuracy not yet available
- 3.2 x 10^-6 < BER < 3.2 x 10^-5
- BER < 3.2 x 10^-6, more accuracy not yet available
- 3.2 x 10^-7 < BER < 3.2 x 10^-6
- BER < 3.2 x 10^-7, more accuracy not yet available
- 3.2 x 10^-8 < BER < 3.2 x 10^-7
- BER < 3.2 x 10^-8
In normal operation, the BER should be lower than 3.2 x 10^-7 (one of the last three values in this list).
If the BER is low, it requires a longer measurement period to obtain an accurate estimate. An increased BER is reported quickly, and then as the BER drops the "more accuracy not yet available" values are used to provide the best information available as quickly as possible.
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Clock reference
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Change Inactive
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Specifies whether the clocking on this DS1 link is used as a general clock reference. This option applies only if the Line clocking field on the DS3 link 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.
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Supported terminations
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Read only
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Specifies which termination protocols this port supports. Values:
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MF Protocol Profile
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Change Inactive
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The MF Protocol Profile used by this port. Select from the displayed list of MF Protocol Profiles.
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Deactivation mode
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Change
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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 DS1 over DS3 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.)
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Alarm state
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Read only
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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.
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Alarm log correlator
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Read only
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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.
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Attention Required alarm events
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Read only / Reset
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Number of times (since the alarm count was reset) that this object's alarm state has gone to Attention Required.
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Alarm state changed timestamp
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Read only
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The time at which the Alarm state last changed.
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Alarm events reset timestamp
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Read only
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The time at which the Attention Required alarm events was last reset to zero.
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Diagnostics - log level
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Change
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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)
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Diagnostics - API trace enabled
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Change
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Specifies whether API tracing is enabled for this object. Values:
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Diagnostics - trace tag
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Change
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An optional diagnostics tag inserted into API tracing and PD logging for this object. This tag may include any ASCII characters.
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Requested status
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Read only
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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.
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Actual status
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Read only
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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.
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