Off-Premises Extension Service

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).


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.
  • Busy Call Forwarding, Delayed Call Forwarding, or Basic Line Hunting
  • Automatic Callback or Automatic Recall
  • Reminder Calls or Regular Reminder Calls
  • Teen Service

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 ISDN or 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:
  • True
  • False
Directory number Read only The directory number of the parent Individual Line, which is shared with the extension line.
Gateway Create The Trunk / Access Gateway or Subscriber Gateway that owns the Access Device that this line uses to connect to the NE. Click on the search button 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. As a short-cut to select the gateway, you can type match details into the field and click on the search button to select from a list of items that match these details. Match details can be a text string, a wildcard string such as B*, or a range such as CA-FL. For more details, refer to the description of the Details panel in Operations Manual: Overview.
Access Device Create The Access Device that this line uses to connect to the NE. Click on the search button at the end of the field to choose from Access Devices on the gateway specified in the Gateway field. If the gateway contains only one Access Device, this device is selected automatically and there is no need to change it. As a short-cut to select the Access Device, you can type match details into the field and click on the search button to select from a list of items that match these details. Match details can be a text string, a wildcard string such as B*, or a range such as CA-FL. For more details, refer to the description of the Details panel in Operations Manual: Overview. If you have not selected a gateway in the Gateway field, the match details are used to match against all Access Devices that are children of Trunk / Access Gateways.
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, for an IDT Port it is 2048, 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'.
  • If you select 'automatic selection', the EMS will assign the subscriber the next free access line number for this device.
  • If you select 'manual selection', the following dialog box presents sub-ranges of access line numbers. Select the sub-range from which the number should be taken and click on Next. In the next dialog box, select a number and click on OK to accept this number. (If no number is shown, this indicates that there are no free numbers in the range; click on Back and select a different number range.)
Signal function code Change Inactive The signal function code used for CAS signaling on the extension line. Values:
  • Loop start (default)
  • Ground start
(Other values of signal function code can be used for other subscriber types, but are not valid for an Off-Premises Extension line.)
GR-303 dial type Change Inactive This field appears only if the configured Access Device uses a GR-303 IDT. Choose whether the subscriber line supports DTMF dialing in addition to pulse dialing. Values:
  • DTMF or Pulse Dial (default)
  • Pulse Dial only
Alarm state Read only Specifies whether any alarms are currently raised for the extension line. 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 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:
  • 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 - 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. However, if you want to filter on this tag in the craft interface, do not include spaces or any of the characters ^ \ $ * + ? | ( ) , . ` ' " [ ] { }.
Requested status Read only Specifies whether an administrator has attempted to enable the Off-Premises Extension Service object. Values:
  • Enabled
    The object has been enabled.
  • Disabled
    The object has not been enabled or has been disabled.
Actual status Read only Specifies the current status of the Off-Premises Extension Service object. Values:
  • Enabled
    The object has been enabled.
  • Disabled
    The object has not been enabled or has been disabled.