DMS-100 Remote Office Test Line Call-Back Table (ROTLCB)

Table Name

Remote Office Test Line Call-Back Table

Functional Description of Table ROTLCB

Table ROTLCB and table ROTLSCSD (Remote Office Test Line Scan & Signal Distributor) drive the Remote Office Test Line (ROTL) facilities.

Tables ROTLCB and ROTLSCSD enable the incorporation of ROTL facilities into the DMS-100 family of switching systems.  The remote office test line function allows a centralized automatic trunk test system, such as Centralized Automatic Reporting On Trunks (CAROT) or Remote Automatic Measurement of Performance And Reporting on Trunks (RAMPART), to automatically test outgoing and two-way trunks in a DMS-100.

The ROTL unit is connected to the DMS-100 by access lines and test ports.  The two access lines are accessible from the Direct Distance Dialing (DDD) network as subscriber lines.  The CAROT or RAMPART system (referred to as CONTROL throughout this section) can access the ROTL unit through one of the two access ports, which must be connected as ground start lines.  The two access lines behave as a two-line hunt group.  In a DMS-100 office they are connected through card NT2X18AD (line circuit card type-B) or equivalent line cards installed in the line module.  Access lines for a DMS-200 switch are connected to a local class-5 switch.

Two ROTL unit test ports are used to originate tests.  The ROTL test ports interface with the DMS switch through a trunk group with a pseudo-Common Language Location Identifier (CLLI) of ROTLTP assigned in table CLLI.  The two members of the trunk group consist of trunk circuits NT3X91AA (remote office test line circuit card).

These trunks must be assigned to tables TRKGRP, TRKSGRP, and TRKMEM with a trunk group type "ROTL."

Each test port has four sense (scan) and four control (signal distributor) points associated with it.  Table ROTLSCSD must be datafilled to identify the location of the scan cards and signal distributor cards that contain the scan and signal distributor points.

Circuits must not have been previously assigned to tables ALMSC (Alarm Scan), NWMSC (Network Management Scan Group), and SCGRP (Scan Group) before scan groups are assigned to table ROTLSCSD.

A maximum of six 105-type test lines are used to terminate 105 test line calls in the near-end office.  The 105 test lines interface with the DMS through NT3X91AA trunk circuits.  These trunks are contained in a trunk group with a pseudo-CLLI of TERM105 assigned in table CLLI and must be assigned to tables TRKGRP, TRKSGRP, and TRKMEM with a trunk class code of "TERM105."  Code 105 in the code table and its associated route must be datafilled to allow a call to the 105 test line to route to the trunks.

One alarm scan (sense) point is used for reporting major alarms such as power failure to the DMS office.  This requires that tables ALMSC and ALMSCGRP be datafilled with function equal to ROTLALM.

Datafill Sequence & Table Size

The following tables must be datafilled before table ROTLCB.

Table size is 0 to 11 tuples.

Datafill

The following table describes datafill for table ROTLCB:

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Table ROTLCB Field Descriptions

Field       Subfield       Entry               Explanation and Action
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INDEX                      See subfield        Index
                                               This field consists of subfield K.
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            K              1 to 10             Call-Back Index
                                               Enter the call-back index that is specified in 
					       the priming digits of a call-back request. 
					       A security call-back is made to the directory 
					       number for this index and the specified 
					       authorization level is granted if the 1004-Hz 
					       unlocking signal is received.
----------------------------------------------------------------------------------------------
AUTHORIZ                   AUTO or MANUAL      Authorization
                                               Enter "AUTO" if a make busy request is allowed 
					       if the number of trunks out of service does not
					       exceed the out-of-service limit.  Enter "MANUAL"
					       if a make busy request is allowed even if the 
					       number of trunks out of service exceeds the 
					       out-of-service limit.  The out-of-service limit 
					       is defined by office parameter 
					       ROTL_OUT_OF_SERVICE_LEVEL in table OFCENG.
----------------------------------------------------------------------------------------------
DR                         Alphanumeric        Digit Register
                           (up to 18 digits)   Enter the directory number (security call-back 
			                       number) for the call-back index entered in 
					       subfield K.
----------------------------------------------------------------------------------------------
-End-

Datafill Example

The following example MAP display shows sample datafill for table ROTLCB:

For index 1, the authorization is AUTO and the call-back directory number is 6211234.

For index 2, the authorization is MANUAL and the call-back directory number is 6221235.


INDEX      AUTHORIZ      DR
_______________________________________________________
1          AUTO          6211234
2          MANUAL        6221235