Nortel DMS-100 Metallic Test Access Horizontal Connection Table (MTAHORIZ)

Table Name

Metallic Test Access Horizontal Connection Table

Functional Description of Table MTAHORIZ

Table MTAHORIZ lists the assignment of horizontal agents, Line Test Units (LTU), Metallic (or multi-line) Test Units (MTU), operator verification, Metallic Jacks (MJACK), incoming test access trunks, extended Metallic Test Access (MTA) and short circuits to a horizontal connection, and horizontal group of Metallic Test Access Minibars (MTAM).

Different horizontal agents can use the same horizontal connection, but are associated with different MTAMs and horizontal groups.  A maximum of 160 different horizontal agents are permitted for a given horizontal connection.

A maximum limit of 32 MTAMs can be multiplied (grouped) to connect to a single horizontal agent.  A horizontal agent can be used only once.

Line test units for the host and remote locations are assigned to pseudo Common Language Location Identifier (CLLI) code LTU.

Metallic (or multi-line) test units for the host and remote locations are assigned to pseudo CLLI code MTU.

Operator verification trunks for the host switching unit are assigned to the pseudo CLLI code VER90.

The CLLI codes for operator verification trunk groups for remote locations are assigned by the operating company.

Metallic jacks are assigned to pseudo CLLI code MJACK.

The CLLIs for incoming test access trunks for the host and remote locations are assigned by the operating company.

The assignment rules for table MTAHORIZ are as follows:

For the assignment of the LTUs, incoming test access and operator verification trunks to trunk group, trunk subgroup and trunk member tables, see tables TRKGRP (Trunk Group), TRKSGRP (Trunk Subgroup), and TRKMEM (Trunk Member) respectively.

A LTU, MTU, or both must be entered in table TRKMEM before being added to table MTAHORIZ.  If the LTU or MTU is deleted from the TRKMEM table, the corresponding tuple in table MTAHORIZ is marked as deleted, but is automatically restored if the LTU or MTU is re-added to table TRKMEM.

Large MTA Configuration

A large MTA configuration is used if the vertical connections that are required to connect to the NOTEST trunk through the MTA exceed the MTAHORIZ limitation of 32 MTA drivers.  The NOTEST trunk is placed on an Extended Metallic Trunk Access (EMTA), and the EMTA capability of connecting to Line Concentrating Device (LCD) vertical connections is used as shown in the following figures.

Figure 1 shows how the LCD group MTA drivers and the EMTA connections and MTA drivers connect.


Figure 1: LCD Connections to EMTA

If there are a large number of test access trunks, the previous solution could result in a large number of MTA drivers needed for the EMTA configuration.  The number of MTA drivers for the EMTA can be reduced by breaking it into groups also, as shown in Figure 2.


Figure 2: MTA Driver Reduction Through Grouping

For related information, refer to table MTAMDRVE (Metallic Test Access Minibar Driver).

Datafill Sequence and Implications

The following tables must be datafilled before table MTAHORIZ:

Table MTAHORIZ interacts with office parameter CABLE_SHORT_TIMEOUT in table OFCENG (timed short circuit [field SELECTOR set to S]).

Table Size

Memory for this table is dynamically allocated up to a maximum of 2,000 tuples.




Datafill

The following table lists datafill for table MTAHORIZ.

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Table MTAHORIZ Field Descriptions

Field       Subfield       Entry               Explanation and Action
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HORIZ                      0 to 127            Metallic Test Access Horizontal Connection
                                               Enter the Metallic Test Access (MTA) horizontal 
					       connection to which the test equipment 
					       (horizontal agent) is connected.
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HORIZGRP                   0 to 159            Metallic Test Access Horizontal Group
                                               Enter the horizontal group number which 
					       identifies the horizontal connection and its 
					       horizontal agent as a unique tuple.  The 
					       horizontal group is used to assign different 
                                               test equipment (horizontal agents) on the same 
					       MTA horizontal.  A horizontal group can involve 
					       only one horizontal agent, but is cross-connected
					       (multipled) at the Main Distribution Frame (MDF) 
					       to a single or a number of MTA Minibar (MTAM) 
					       driver horizontal connections.
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HORIZAGT                   See Subfield        Horizontal Agent
                                               This field consists of subfield SELECTOR.


            SELECTOR       B, BBT, E, J,       Selector
	                   L, LA, MJ,          If the assignment is for a board-to-board 
			   NT1, S, T           dedicated horizontal connection, enter "B"
			                       and datafill refinement BBTNR, section 
					       "SELECTOR = B".

                                               If the assignment is for the MTA horizontal 
					       connections on a Board-to-Board Testing (BBT) 
					       unit, enter "BBT" and datafill refinement BBTNR.

                                               If the assignment is to multiple a horizontal 
					       connection of a minibar switch from a host or 
					       remote connection to the vertical of a host 
					       minibar switch, enter "E" (extension of MTA) 
					       and datafill refinement EMTAVERT, section 
					       "SELECTOR = E".

                                               If a metallic connection to the tip and ring of 
					       the subscriber line is required, enter "MJ" and 
					       datafill refinements CLLI and MJACKNUM, in
					       section "SELECTOR = MJ".

					       Selector values J and LA are for licensee use 
					       only.

                                               If the assignment is for a Line Test Unit (LTU) 
					       or Metallic (or multi-line) Test Unit (MTU), 
					       enter "L" and datafill refinements CLLI, EXTRKNM,
					       and ALTUSE in section "SELECTOR = L".

                                               If the assignment is for a test NT1, enter "NT1"
					       and complete refinement NT1NUM in section 
					       "SELECTOR = NT1".

					       If the assignment is for a timed short circuit 
					       (and the time is defined by the office parameter 
					       CABLE_SHORT_TIMEOUT in table OFCENG), enter "S". 
					       No refinements require datafill.  Go to field 
					       MTAGRP in section 
					       "SELECTOR = B, BBT, E, LA, MJ, S, T".

                                               If the assignment is for an incoming test access 
					       or operator verification trunk, enter "T" and 
					       datafill refinements CLLI and EXTRKNM in section 
					       "SELECTOR = T".
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-End-

SELECTOR = B

If the entry in field SELECTOR is B, datafill refinement BBTNR as described below.

                                          
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SELECTOR = B Field Descriptions

Field       Subfield       Entry               Explanation and Action
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            BBTNR          0 to 7              Board-to-Board Testing Number
	                                       Enter the number of the board-to-board set with 
					       which this horizontal connection is associated.

					       Go to field MTAGRP in section 
					       "SELECTOR = B, BBT, E, LA, MJ, S, T".
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-End-

SELECTOR = BBT

If the entry in field SELECTOR is BBT, datafill refinement BBTNR as described below.

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SELECTOR = BBT Field Descriptions

Field       Subfield       Entry               Explanation and Action
----------------------------------------------------------------------------------------------
            BBTNR          0 to 7              Board-to-Board Testing Number
	                                       Enter the number of the board-to-board set with 
					       which this horizontal connection is associated.

            CLLI_NAME      Alphanumeric        Common Language Location Identifier
	                                       This subfield specifies the CLLI name of the 
					       BBT outgoing trunk.

            EXTRKNM        0 to 9,999          External Trunk Number
	                                       This subfield specifies the external trunk 
					       number assigned in table TRKMEM to the BBT 
					       outgoing trunk.

            PREDIAL_DELAY  0 to 300            Predial Delay
	                                       This subfield specifies the time in hundreds 
					       of milliseconds between sending an off-hook 
					       by the DMS switch on the no-test trunk to the 
					       old office and outpulsing of digits on that 
					       trunk.  For example, an input of "2" gives a 
					       delay of 200 milliseconds.

            SDMEM          0 to 511            Signal Distribution Member
	                                       This subfield specifies the group number 
					       associated with the primary Signal
					       Distribution (SD) circuit of a NT2X57 card
					       connected to this BBT test unit previously
					       datafilled in table SDGRP (Signal Distributor 
					       Group)

            SCMEM          0 to 511            Scan Detector Member
	                                       This subfield specifies the group number 
					       associated with the primary SC circuit of 
					       a NT0X10 card connected to this BBT test 
					       unit previously datafilled in table SCGRP
                                               (Scan Group).
                                                 
            DISC_RELAY     A, K                Disc Relay
	                                       This subfield specifies the relay in the 
					       NT5X73AB BBT test unit which, when operated, 
					       disconnects the BBT test unit from the old 
					       office.  The default is the "A" relay.

            DISC_TIME      1 to 300            Disc Time
	                                       This subfield specifies the time in 100
					       millisecond increments required for the old 
					       office to properly release once a disconnect 
					       signal has been received from the DMS switch.

            OFFICE TYPE    SxS, XBAR,          Office Type
	                   ESS, DMS,           This subfield specifies the information required 
			   and OTHER           by the BBT software to communicate with the old 
			                       office.  The old offices are categorized as SxS, 
					       XBAR, ESS, DMS, and OTHER.
            
            OPTIMIZE_      Y or N              Optimized Outpulsing
	    OUTPULSING                         This subfield specifies if the old office uses 
	                                       optimized outpulsing.  This subfield is displayed 
					       only for SxS offices.

            DIGSOUT        0 to 18             Digit Number
	                                       This subfield specifies the number of digits that
					       must be outpulsed by the DMS switch to connect to
					       a line in the old office.

            AT_HOST        YES or NO           At Host
	                                       This subfield specifies if the ABBT test unit
					       is located at the host site.

            RELAY_DELAY    0 to 100            Relay Delay
	                                       This subfield specifies the time in 100 
					       millisecond increments for a signal output from
					       a SD point of the host DMS switch to travel to 
					       the BBT test unit located at a remote site and 
					       operate a relay in the BBT test unit.  For 
					       example, an input of "2" specifies a delay of 
					       200 milliseconds.  The prompt appears only if 
					       the BBT test unit is located at a remote site 
					       (AT HOST=NO).






            SCAN_DELAY     0 to 10             Scan Delay 
	                                       This subfield specifies the time in 100 
					       millisecond increments for a signal generated 
					       by an ABBT test unit located at a remote site
					       to travel to a SCAN point of the host DMS switch 
					       and be read.  For example, an input of "2" 
					       specifies a delay of 200 milliseconds. 
					       The prompt appears only if the ABBT test unit is 
					       located at a remote site (AT HOST=NO).

            VERT           0 to 639            Vertical
	                                       This subfield is the starting vertical number 
					       on the MTA driver.

            NBRVERTS       0 to 640            Number Verticals
	                                       This subfield is the number of verticals for 
					       the MTA driver.

					       Go to field MTAGRP in section
					       "SELECTOR = B, BBT, E, LA, MJ, S, T".
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-End-      

SELECTOR = E

If the entry in field SELECTOR is E, datafill refinement EMTAVERT as described below.

                                          
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SELECTOR = E Field Descriptions
                                               
Field       Subfield       Entry               Explanation and Action
----------------------------------------------------------------------------------------------
            EMTAVERT       0 to 1,023          Extended Metallic Test Access Column
	                                       Enter the associated vertical connection on 
					       the MTA in the host to which the horizontal 
					       connection is connected.

					       Go to field MTAGRP in section 
					       "SELECTOR = B, BBT, E, LA, MJ, S, T".
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-End-

SELECTOR = L

If the entry in field SELECTOR is L, datafill refinements CLLI, EXTRKNM, and ALTUSE as described below.

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SELECTOR = L Field Descriptions

Field       Subfield       Entry               Explanation and Action
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            CLLI           LTU or MTU          Common Language Location Identifier
	                                       If the assignment is for a LTU, enter the pseudo 
					       CLLI code LTU.

					       If the assignment is for a MTU, enter the pseudo 
					       CLLI code "MTU".

					       The pseudo CLLI codes must be previously entered 
					       in table CLLI.

            EXTRKNM        0 to 9,999          External Trunk Number
	                                       Enter the external trunk trunk number assigned in 
					       table TRKMEM to the LTU or MTU.

            ALTUSE         Y or N              Automatic Line Test Use
	                                       Enter "Y" (yes) to use the line test equipment for 
					       automatic line testing.  Otherwise, enter "N" (no).

					       Go to field MTAGRP in section 
					       "SELECTOR = B, BBT, E, LA, MJ, S, T".
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-End-

SELECTOR = MJ

If the entry in field SELECTOR is MJ, datafill refinements CLLI and MJACKNUM as described below.

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SELECTOR = MJ Field Descriptions

Field       Subfield       Entry               Explanation and Action
----------------------------------------------------------------------------------------------
            CLLI           MJACK               Common Language Location Identifier
	                                       If the assignment is for a metallic jack, enter 
					       the pseudo CLLI code MJACK.  The pseudo CLLI code
					       must be previously entered in table CLLI.

            MJACKNUM       1 to 256            Metallic Jack Number
	                                       Enter the metallic jack number.

                                               Note: The vertical connection to which the 
					       horizontal connection is being extended, must be 
					       previously datafilled as an EMTA vertical connection 
					       in table MTAVERT.

					       Go to field MTAGRP on section
					       "SELECTOR = B, BBT, E, LA, MJ, S, T".
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-End-

SELECTOR = NT1

If the entry in field SELECTOR is NT1, datafill refinement NT1NUM as described below.

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SELECTOR = NT1 Field Descriptions

Field       Subfield       Entry           Explanation and Action
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            NT1NUM         0 to 255        Network Termination 1 Number
					   Enter the number of the test Network Termination 
					   1 (NT1) in the DMS testing system with which this 
					   horizontal connection is associated.

					   Go to field MTAGRP in section
					   "SELECTOR = B, BBT, E, LA, MJ, S, T".
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-End-

SELECTOR = T

If the entry in field SELECTOR is T, datafill refinements CLLI and EXTRKNM as described below.

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SELECTOR = T Field Descriptions

Field       Subfield       Entry               Explanation and Action
----------------------------------------------------------------------------------------------
            CLLI           Alphanumeric        Common Language Location Identifier
	                   (up to 16           If the assignment is for the host operator 
			   characters) or      verification trunk, enter the pseudo CLLI code
			   VER90               "VER90".

                                               If the assignment is for an operator verification 
					       trunk for a remote location, or an incoming test 
					       access trunk, enter the pseudo CLLI code
					       previously datafilled in table CLLI.  The pseudo 
					       CLLI codes must also be entered in table CLLI.
	    
            EXTRKNM        0 to 9,999          External Trunk Number
	                                       Enter the external trunk number assigned in table 
					       TRKMEM to the operator verification trunk or the 
					       incoming test access trunk.

					       Go to field MTAGRP in section 
					       "SELECTOR = B, BBT, E, LA, MJ, S, T".
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-End-

SELECTOR = B, BBT, E, LA, MJ, S, T

If the entry in field SELECTOR is B, BBT, E, LA, MJ, S, or T, datafill field MTAGRP as described below.

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SELECTOR = B, BBT, E, LA, MJ, S, T Field Descriptions

Field       Subfield       Entry               Explanation and Action
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MTAGRP                     See Subfields       Metallic Test Access Group
                                               This field consists of a list of MTA drivers that 
					       multiple to the test equipment and is a vector of 
					       up to 32 multiples of subfields MTAMEM and HORIZ. 
					       If less than 32 multiples are required, end the 
					       list with a "$" (dollar sign).

            MTAMEM         0 to 511            Metallic Test Access Minibar Driver Member
	                                       Enter the Metallic Test Access Minibar (MTAM) 
					       driver member number to which the horizontal 
					       connection is connected.

            HORIZ          0 to 127            Horizontal
	                                       This read-only field gives information about the 
					       MTA drivers physical horizontal connection. 
					       Enter "0" (zero) to satisfy table control.

                                               Any entry outside the range indicated for this
					       field is invalid.
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-End-

Datafill Example

The following example MAP display shows sample datafill for table MTAHORIZ.

The example shows an addition to table MTAHORIZ.  The value in field HORIZ is entered which is part of the vector of field MTAGRP.  After the values have been input, a display of the table shows the actual horizontal connection on the physical driver.


HORIZ    HORIZGRP    HORIZAGT                                          MTAGRP
______________________________________________________________________________
3        159         BBT 0 BBTOUT 0 8 0 0 A 12 DMS Y 7 YES 24 4        (6 3) $