Nortel DMS-100 Test Desk Trunk Group Type

Test Desk Trunk Group Type

In a DMS-100 end office, incoming and outgoing trunk group type TD connects with a test desk (for example, #14 Local Test Desk [LTD], #3 Local Test Cabinet [LTC]).  Members of these trunk groups have Product Engineering Codes (PEC) of NT2X90AB or NT2X90AD.

If the dialed number is busy, the trunk is connected automatically to the line through Metallic Test Access (MTA).

Line Equipment Numbers (LEN) that do not have associated directory numbers (for example, multi-line hunt group members) can be addressed by 11 + LEN for testing purposes.

For example, if a trunk group with field VERSION equal to "MLT" or "TSTDK" is connected to a line that has option Plug-Up (PLP), Random Make Busy (RMB), Requested Suspension (RSUS), or Suspended Service (SUS) activated, and a test desk is connected in idle bridge mode to that line, the line will go to treatment Test Desk Bridged (TDBR) in treatment subtable LNT (Line Treatment), if one of the following conditions occur:

Trunk group type TD can, under certain circumstances, be used for verification.  Refer to table TRKGRP, type VR for more information.

Datafill

The following table lists the datafill for table TRKGRP, type TD.

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Field Descriptions - Test Desk

Field    Subfield        Entry               Explanation and Action
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GRPKEY                   See Subfield        Group Key
                                             This field consists of subfield CLLI.
       
         CLLI            Alphanumeric        Common Language Location Identifier
                         (1 to 16            Enter the Common Language Location Identifier
		         characters)         (CLLI) name assigned to the trunk group in 
			                     table CLLI.
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GRPINFO                  See Subfields       Variable Group Information
                                             This field consists of subfields GRPTYP, TRAFSNO, 
					     PADGRP, NCCLS, TRAFCLS, SELSEQ, TRKDIR, PRTNM,
					     SCRNCL, SNPA, ORIGSCRE, VDEVAR, TDTYPE, and
					     BARGE

         GRPTYP          TD                  Group Type
	                                     Enter "TD" to specify the incoming and outgoing 
					     test desk trunk group type.

         TRAFSNO         Numeric             Traffic Separation Number
			 (0 to 127)          Enter the incoming and outgoing traffic separation
					     number assigned to the trunk group.  If it is not 
					     required, enter "0" (zero).

                                             If switching unit has feature package NTX085AA 
					     (Traffic Separation Peg Count), enter a number 
					     between 1 and the value of office parameter
					     TFAN_IN_MAX_NUMBER in table OFCENG.
                                                
					     For switching units without feature package 
					     NTX085AA, enter 1 to 15.

                                             Incoming and outgoing traffic separation 
					     numbers 1 to 9 should be reserved for 
					     generic traffic separation numbers.
					     Refer to the description of table TFANINT 
					     (Traffic Separation Intersection) for 
					     additional information.

         PADGRP          Alphanumeric        Pad Group
                         (1 to 5             Enter the name of the pad group assigned to 
			 characters)         the trunk group in table PADDATA.

			                     Refer to the description of table PADDATA
					     (Pad Data) for additional information.

         NCCLS           NCBN, NCID,         Operational Measurements No-Circuit Class
                         NCIM, NCIT,         Enter the Operational Measurements (OM)
			 NCLT, NCOF,         No-Circuit Class (NCCLS) to indicate which
			 NCON, NCOT,         OM register is incremented if treatment
			 NCRT, NCTC,         Generalized No-Circuit (GNCT) occurs.
                         or NOSC
			                     If the trunk group direction is incoming, 
					     this field is not required.  Enter "NCRT" 
					     (No-Circuit).
                                            
					     The initial value for this trunk group type 
					     is "NCRT".

					     For more information, refer to table TRKGRP 
                                             and the Operational Measurements Reference
                                             Manual.

         TRAFCLS         Alphabetic          Traffic Usage Class
	                 (2 characters)      Enter the traffic usage class assigned to the trunk 
			                     group.

         SELSEQ          MIDL, CWCTH,        Select Sequence
	                 CCWCTH, ASEQ,       If the trunk group direction is incoming,
			 or DSEQ             sequential selection does not apply.  Enter "MIDL".

                                             If the trunk group is outgoing and feature package 
					     NTX244AB (Enhanced Sequential Trunk Hunting) is 
					     present, base the selection order on the order of 
					     the trunks in table TRKMEM, and enter:

					       * CWCTH or CCWCTH for clockwise or 
					         counter-clockwise circular trunk hunting 
						 from the most recently released trunk in 
						 the trunk group, if the far-end is CCWCTH 
						 or CWCTH respectively, or:

					       * ASEQ or DSEQ for ascending or descending 
					         sequential selection, if far-end is DSEQ or 
						 ASEQ respectively.


                                             Note: A trunk group trunk selection method cannot 
					           be changed.  If a change in the selection 
						   method is required, a new trunk group must 
						   be created with the required trunk selection 
						   method.  The individual trunks with the old 
						   selection sequence must be deleted from the 
						   old trunk group and then added to the new 
						   trunk group.  For an existing trunk group, 
						   the selection sequence may be changed to ASEQ 
						   from DSEQ or from DSEQ to ASEQ if all the 
						   trunk members are Installation Busy (INB) or 
						   Unequipped (UNEQ).

         TRKDIR          IC or OG            Trunk Direction
                                             Enter "IC" to specify that the direction of traffic 
					     flow is incoming or "OG" to specify that the 
					     direction of traffic flow is outgoing.

                                             If office parameter TRK_OOS_CHK_ON in table OFCVAR 
					     is set to "Y", all trunks in the group must be busy 
					     before the value of this field can be changed by 
					     Data Modification Order (DMO).

         PRTNM           Alphanumeric        Standard Pre-Translator Name
                         (1 to 4             If the trunk group is incoming, enter the name
			 characters) or      of the standard pre-translator defined in table
                         NPRT                STDPRTCT to which translation is to route on
			                     receipt of the first incoming digit.  If the trunk
					     group is outgoing, enter "NPRT".

                                             If office parameter TRK_OOS_CHK_ON in table OFCVAR 
					     is set to "Y", all trunks in the group must be busy 
					     before the value of this field can be changed by 
					     DMO.

         SCRNCL          Alphanumeric        Class-of-Service Screening Table Name
	                 (1 to 32            If class-of-service screening is required, enter
			 characters)         the name of the class-of-service screening
			 or NSCR             table (datafilled in table SCRNCLAS) to which
			                     digit translation routes.

					     If class-of-service screening is not required, 
					     enter "NSCR" (no screening).

					     If the trunk group is outgoing, enter "NSCR".

         SNPA            Numeric             Serving Numbering Plan Area
	                 (3 digits)          Enter the code in table HNPACODE to which
			                     translation routes for digit translation.

					     If the trunk group is outgoing, enter "000".

         ORIGSRCE        LCL or NLCL         Originating Source
	                                     If the trunk group is incoming, enter the 
					     originating source of the call, Local (LCL) 
					     or Non-Local (NLCL).  This field is used to 
					     screen calls in subtable HNPACONT.HNPACODE.

					     If the trunk group is outgoing, enter "LCL".

         VDEVAR          See Subfield        Variable Digit Data
                                             This field consists of subfield VDESEL.


         VDESEL          Y or N              Variable Digit Selector
	                                     If the number of incoming digits is variable, 
					     enter "Y" and datafill refinements DIGSIN1 
					     and DIGSIN2.  If the number of incoming digits 
					     is a fixed quantity, enter "N".

         DIGSIN1         Numeric             Minimum Number of Incoming Digits
	                 (1 to 18)           If the entry in subfield VDESEL is "Y", enter
                                             the minimum number of incoming digits received
					     on the trunk group.

					     Entries outside the range indicated for this 
					     field are not valid.

					     If office parameter TRK_OOS_CHK_ON in table OFCVAR 
					     is set to "Y", all trunks in the group must be busy 
					     before the value of this field can be changed by 
					     DMO.

         DIGSIN2         Numeric             Maximum Number of Incoming Digits
	                 (1 to 18)           If the entry in subfield VDESEL is "Y", enter the 
			                     maximum number of incoming digits received on the 
					     trunk group.

					     Entries outside the range indicated for this field 
					     are not valid.

					     If office parameter TRK_OOS_CHK_ON in table OFCVAR 
					     is set to "Y", all trunks in the group must be busy 
					     before the value of this field can be changed by 
					     DMO.

         DIGREGEN        Numeric             Digits to be Regenerate
	                 (1 to 4) or N       If the entry in subfield VDESEL is "N", enter the 
			                     digit string to be prefixed to the incoming digits 
					     to regenerate a seven-digit number.  The length of 
					     the digit string entered is subtracted from seven 
					     by the switch to determine the number of incoming 
					     digits to expect.

					     The regenerated number is then translated in table 
					     STDPRTCT.STDPRT or HNPACONT.HNPACODE, or both.

					     For example, if the entry is "73", the switch 
					     expects five incoming digits "XXXXX" and
					     regenerates the number "73XXXXX".

					     If no digits are to be prefixed, enter "N".  
					     The switch then expects seven incoming digits.

					     If office parameter TRK_OOS_CHK_ON in table OFCVAR 
					     is set to "Y", all trunks in the group must be busy 
					     before the value of this field can be changed by 
					     DMO.

         TDTYP           See Subfields       Test Desk Type
	                                     This field consists of subfield VERSION and 
					     refinements.

         VERSION         MLT or TSTDK        Version
	                                     If the incoming trunk group and switch has an 
					     interface for a mechanized loop tester, enter 
					     "MLT" and datafill refinement DGTTST.

					     If the incoming trunk group and switch has an 
					     interface for signaling #14 LTD, enter "TSTDK"
					     and datafill refinements DGTTST and TKTYP.

					     The default value for TD trunks is "TSTDSK".

         DGTTST          EXTRCVR or          Digit Test
	                 INTRCVR             If the value in field VERSION is "MLT" or "TSTDK",
			                     datafill this field to specify whether an internal 
					     or an external receiver is used in the NT2X90AB or 
					     NT2X90AD test trunk for the digit test.  For an 
					     internal receiver, enter "INTRCVR".  For an 
					     external receiver, enter "EXTRCVR".

					     The default value is "INTRCVR".

         TKTYP           REGULAR,            Trunk Type
	                 NOTEST, or          If the value in field VERSION is "TSTDK", datafill
			 blank               this field.

			                     Enter "REGULAR" for regular trunks or "NOTEST" for 
					     no-test trunks.
 
         BARGE           Y or N              Barge
	                                     Datafill this field to specify whether barging
					     into an existing call is allowed.

					     If barging is allowed, enter "Y".  Otherwise, 
					     enter "N".
                                              
					     The default value for this subfield is "N".
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Datafill Example

The following example MAP display shows sample datafill for table TRKGRP, type TD.  This example shows datafill for an incoming trunk group with an AT&T Mechanized Loop Tester, an incoming trunk group with a signaling #14 LTD, and an outgoing trunk group.



GRPKEY         GRPINFO
_________________________________________________________________________________________
OTWAON23T051   TD 15 ELO NCOT TK MIDL IC INC3 NSCR 613 NLCL N 72 MLT EXTRCVR N $
OTWAON23T052   TD 17 ELO NCOT TK MIDL IC INC3 NSCR 613 NLCL N 72 TSTDK INTRCVR NOTEST N $
OTWAON23T050   TD 16 ELO NCOT TK MIDL OG NPRT NSCR 000 LCL N N N $