The Off-Premises Extension Service object defines whether this subscriber uses Off-Premises Extension Service. This service allows an Individual Line to be associated with a second physical telephone line on a different Access Device (typically in a different location).
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An Individual Line that is subscribed to Off-Premises Extension cannot also be subscribed to any of the following services. The EMS prevents you from configuring Off-Premises Extension at the same time as any of these services for the same Individual Line.
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Each Off-Premises Extension Service object is a child of an Individual Line object with a Call Agent signaling type of Analog line/T1 CAS. (Off-Premises Extension Service is not available for Business Group Lines, MADNs, MLHG Pilot DNs, or PBXs, nor for SIP subscribers.) It is created automatically if the global Off-Premises Extension Service object specifies that the service is available; you cannot create or delete it. If the subscriber is subscribed to Off-Premises Extension, you can disable or enable this object in order to disable or enable the extension line.
To allow the subscriber to use Off-Premises Extension, configure the service, and specify the access device, access line number, and signal function code of the extension line. All parameters except Off-Premises Extension, Requested status, and Actual status are visible in the EMS System Explorer only when the service is configured.
Parameter |
Access |
Description |
Off-Premises Extension - Subscribed | Change | Specifies whether this subscriber is permitted to use Off-Premises Extension. (This service allows two physical telephone lines on different access devices, typically in different locations, to share a single Directory Number so that one acts as an extension line for the other.) Values:
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Directory number | Read only | The directory number of the parent Individual Line, which is shared with the extension line. |
Access Device | Create | The Access Device that the extension line uses to connect to the NE. Click on the ellipsis symbol at the end of the field to choose from access devices on Trunk / Access Gateways or access devices on Subscriber Gateways. Then select from the displayed list of gateways of the specified type, and then select from the displayed list of Access Devices on the specified gateway. |
Access Line number | Create | The Access Line number on the specified Access Device that this subscriber uses.
Either type in the number (which must not match the access line number used by any other subscriber on this access device), or click on the ellipsis symbol at the end of the field to select from the list of numbers not currently in use.
The highest line number that you can specify depends on the access device type: for an IAD it is the number of voice ports configured, and for other devices it is a configured parameter on the access device.
If you click on the ellipsis symbol, the dialog box that appears offers 'manual selection' or 'automatic selection'.
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Signal function code | Change Inactive | The signal function code used for CAS signaling on the extension line. Values:
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Alarm state | Read only | Specifies whether any alarms are currently raised for the extension line. Values:
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Alarm log correlator | Read only | Identifier of the log message that was generated when the extension line last entered Attention Required or Attend To Dependent alarm state. This field is reset when the Attention Required alarm events and the Attend To Dependent alarm events are reset to zero. |
Additional alarm log correlator | Read only | If available, the identifier of the log message for the original event that caused the last Attention Required or Attend To Dependent alarm state for this object. This field is reset when the Attention Required alarm events and the Attend To Dependent alarm events are 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. |
Attend To Dependent alarm events | Read only / Reset | Number of times (since the alarm count was reset) that this object's alarm state has gone to Attend To Dependent. |
Alarm state changed timestamp | Read only | The time at which the Alarm state last changed. |
Diagnostics - logging - 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:
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Diagnostics - API trace - enabled | Change | Specifies whether API tracing is enabled for this object. Values:
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Diagnostics - API trace - 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 enable the Off-Premises Extension Service object. Values:
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Actual status | Read only | Specifies the current status of the Off-Premises Extension Service object. Values:
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