Nortel DMS-100 Trunk-to-Line Translations |
Description
When a call originates on an incoming trunk, the appropriate trunk tables are used. The call then enters the screening tables where digit analysis begins. After some general pre-screening or pre-translation is performed, the call may progress into more detailed screening based on NPA/NXX digits to determine the path into the designated routing tables for defining the final destination, or termination of the call.
Operation
Trunk-to-line translations can be traced using a simplified block diagram, representing the major functions within the translation process, as shown in the following figure:
++++++++++ +++++++++++++ +++++++++++ +++++++++ + Trunks + ----> + Screening + ----> + Routing + ----> + Lines + ++++++++++ +++++++++++++ +++++++++++ +++++++++
The trunks tables contain detailed information about trunks originating and terminating in the switch. Each trunk connected to the office is represented by entries in the trunk tables. These tables include information about the following:
The screening tables contain the information used to analyze the digits that the DMS-100 receives. This screening process tests the digits dialed prior to continuing to the next routing stage, to determine, for example, whether this call is local or non-local.
The screening tables establish the call type based on the digits received. The three basic call types are:
The routing tables route the calls to their final destination. The information found in these tables dictates how and where a call will be completed, or if the call will route to a recorded announcement or treatment.
The lines tables contain information about the terminating line. These tables have two primary functions:
Translations Table Flow for Trunk-to-Line Translations
The call originates from a particular hardware location on an incoming trunk member listed in table TRKMEM. Signaling information is obtained from table TRKSGRP.
For an incoming trunk, table TRKGRP lists the Serving Numbering Plan Area (SNPA) in subfield SNPA and the pre-translator subtable name in subfield PRTNM.
If a pre-translator subtable name is specified, translation continues with table STDPRTCT and its subtable STDPRT. If no pre-translator is specified, the entry in subfield PRTNM is NPRT and the call routes to table HNPACONT and its subtable HNPACODE.
Table TOFCNAME defines all the terminating offices in the switch and they are identified by area code and office code. Table DNINV contains the data for all assigned and unassigned Directory Numbers (DN). If the DN belongs to a hunt group, tables HUNTGRP and HUNTMEM will be accessed.
The trunk-to-line translations process is shown in the flowchart that follows.
Table Flow for a Trunk-to-Line Translation
The following table lists the datafill content used in the flowchart. In this example, the terminating line belongs to a hunt group:
Trunk : F514T13TISIT048 Terminating SNPA : 514 Terminating DN : 5462225
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Datafill Example for Trunk-to-Line Translations
Datafill Table Example Data
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CLLI F514T13TISIT048 1527 1 SSP5_TACISUP_TRAF_TRUNKS
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TRKMEM F514T13TISIT048 1 0 DTC 13 19 24
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TRKSGRP F514T13TISIT048 0 DS1SIG C7UP 2W N N UNEQ NONE Q764 2W 2W 0
TATSTAC $ TACTIMER CIC
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TRKGRP F514T13TISIT048 IT 0 NPDGP NCIT 2W NIL MIDL 514 NPRT NSCR 514 000
Y N $
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HNPACONT 514 98 0 ( 72) ( 1) ( 24) ( 0)
subtable HNPACODE 546 546 DN 514 546
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TOFCNAME 514 546
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DNINV 514 546 2225 H 57 0
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HUNTGRP 57 514 5462225 DNH N N N RCVD N N N N N N 4 $
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HUNTMEM 57 0 N D 5462225 N
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LENLINES HOST 05 0 16 17 S 0 5462225 DT 108 $
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The following table lists the datafill content used in the flowchart. In this example, a pre-translator is specified in table TRKGRP:
Trunk : S5AAA807IPTLA Pre-translator : P807 Terminating SNPA : 807 Terminating DN : 5663000
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Datafill Example for Trunk-to-Line Translations Using a Pre-translator
Datafill Table Example Data
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CLLI S5AAA807IPTLA 346 40 S5AAA_TO_S5807_IC_PTS_LAMA
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TRKMEM S5AAA807IPTLA 0 0 DTC 5 1 1
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TRKSGRP S5AAA807IPTLA 0 DS1SIG STD IC DP WK N 10 10 NO NO N N Y M UNEQ
-----------------------------------------------------------------------------------------
TRKGRP S5AAA807IPTLA IT 0 NPDGP NCRT IC DD MIDL 000 P807 NSCR 807 000
N N $
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STDPRTCT P807 (1) (65021)
subtable STDPRT 807 807 N DD 3 NA
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HNPACONT 807 201 1 ( 31) ( 1) ( 14) ( 0)
subtable HNPACODE 457 457 DN 807 566
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TOFCNAME 807 566
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DNINV 807 566 3000 L HOST 04 0 00 19
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LENLINES HOST 04 0 00 19 S 0 5663000 DT 8 $
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Datafilling Office Parameters
The following table shows the office parameters used by trunk-to-line translations. For more information about office parameters, refer to the DMS-100 Office Parameters Reference Manual, NTP 297-8021-855:
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Office Parameters Used by Trunk-to-Line Translations
Table Name Parameter Name Explanation and Action
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OFCENG ACTIVE_DN_SYSTEM This parameter specifies the type of DNs that
can be used in an office. If this parameter
is set to "NORTH_AMERICAN", the directory number
must use the form NPA-NXX-XXXX. If this
parameter is set to "UNIVERSAL", the directory
number may vary in length.
AIN_ACTIVE This parameter controls the activation of the
Advanced Intelligent Network (AIN). Enter "Y"
to activate AIN software. Enter "N" to
deactivate AIN software. If this parameter
is set to "N", parameter AIN_OFFICE_TRIGGRP
in table OFCVAR is disregarded.
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OFCVAR AIN_OFFICE_TRIGGRP This parameter is used to subscribe trigger
behaviors on an office-wide basis. The entry
in field AINGRP in table TRIGGRP is entered
here. The default value is "NIL".
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Datafill Sequence
The following table lists the tables that require datafill to implement trunk-to-line translations for the trunk. The tables are listed in the order in which they are to be datafilled:
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Datafill Tables Required for Trunk-to-Line Translations for the Trunk
Table Purpose of Table
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CLLI The common language location identifier table lists the name that
uniquely identifies each trunk group, tone, or announcement.
TRKGRP The trunk group table contains customer-defined data associated
with each trunk group.
TRKSGRP The trunk subgroup table specifies supplementary information for
each trunk group.
TRKMEM The trunk member table gives the physical location of each trunk
assigned to one of the trunk groups.
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The following table lists the tables that require datafill to implement trunk-to-line translations for the called line. The tables are listed in the order in which they are to be datafilled:
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Datafill Tables Required for Trunk-to-Line Translations
Table Purpose of Table
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HNPACONT The home numbering plan area control table lists all the home or
serving area NPAs for a particular area.
subtable HNPACODE The home numbering plan area code subtable lists the route treatment
or table to which the translation routes for each of the assigned NPAs.
STDPRTCT The standard pre-translator table lists the names of the standard
pre-translator subtables.
subtable STDPRT The standard pre-translator subtable determines the next stage of
translation, based on the range of leading digits.
TOFCNAME The terminating office name table defines all terminating offices
in the switch.
DNINV The directory number inventory table is a read-only table that
contains data for all assigned and unassigned DNs.
HUNTGRP The hunt group table lists data assignments for each hunt group
in the switching unit.
HUNTMEM The hunt member table lists the members assigned to the hunt groups.
LENLINES The line assignment table contains the DN, hardware location, and
options associated with the calling line.
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Datafilling Table CLLI
The following table shows the datafill specific to trunk-to-line translations for table CLLI. Only those fields that apply directly to trunk-to-line translations are shown:
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Datafilling Table CLLI
Subfield or
Field Refinement Entry Explanation and Action
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CLLI Alphanumeric Common Language Location Identifier
(1 to 16 Enter a CLLI code to uniquely identify the
characters) far end of each announcement, tone, or trunk
group.
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The following example MAP display shows sample datafill for table CLLI:
CLLI ADNUM TRKGRSIZ ADMININF _______________________________________________________________ F514T13TISIT048 1527 1 SSP5_TACISUP_TRAF_TRUNKS S5AAA807IPTLA 346 40 S5AAA_TO_S5807_IC_PTS_LAMA |
Datafilling Table TRKGRP
The following table shows the datafill specific to trunk-to-line translations for table TRKGRP. Only those fields that apply directly to trunk-to-line translations are shown:
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Datafilling Table TRKGRP
Subfield or
Field Refinement 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 CLLI code assigned to the trunk
characters) group in table CLLI.
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The following example MAP display shows sample datafill for table TRKGRP:
GRPKEY GRPINFO __________________________________________________________________________ F514T13TISIT048 IT 0 NPDGP NCIT 2W NIL MIDL 514 NPRT NSCR 514 000 Y N $ S5AAA807IPTLA IT 0 NPDGP NCRT IC DD MIDL 000 P807 NSCR 807 000 N N $ |
Datafilling Table TRKSGRP
The following table shows the datafill specific to trunk-to-line translations for table TRKSGRP. Only those fields that apply directly to trunk-to-line translations are shown:
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Datafilling Table TRKSGRP
Subfield or
Field Refinement Entry Explanation and Action
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SGRPKEY See subfields Subgroup Key
This field consists of subfields CLLI and
SGRP.
CLLI Alphanumeric Common Language Location Identifier
(1 to 16 Enter the code that is assigned in table
characters) CLLI to the trunk group to which the
subgroup belongs.
SGRP 0 or 1 Subgroup Number
Enter the number assigned to the trunk
subgroup.
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The following example MAP display shows sample datafill for table TRKSGRP:
SGRPKEY CARDCODE SGRPVAR ________________________________________________________________________________________ F514T13TISIT048 0 DS1SIG C7UP 2W N N UNEQ NONE Q764 2W 2W 0 TATSTAC $ TACTIMER CIC S5AAA807IPTLA 0 DS1SIG STD IC DP WK N 10 10 NO NO N N Y M UNEQ |
Datafilling Table TRKMEM
The following table shows the datafill specific to trunk-to-line translations for table TRKMEM. Only those fields that apply directly to trunk-to-line translations are shown:
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Datafilling Table TRKMEM
Subfield or
Field Refinement Entry Explanation and Action
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CLLI Alphanumeric Common Language Location Identifier
(1 to 16 Enter the CLLI code that is assigned to the
characters) trunk group of which the trunk is a member.
This CLLI code is assigned in table CLLI.
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EXTRKNM 0 to 9,999 External Trunk Number
Enter the external trunk number that is
assigned to the trunk. For members of
trunk groups using the AIOD option, the
external trunk number must be unique over
all trunks and lines using the same AIOD
group.
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MEMVAR See subfield Variable Data for Members
This field consists of subfield PMTYPE and
refinements.
PMTYPE DTC Peripheral Module Type
Enter the Peripheral Module (PM) type on
which the trunk is mounted and datafill the
refinements associated with this entry value.
Enter DTC for a digital trunk controller and
complete subfields DTCNO, DTCCKTNO, and
DTCCKTTS.
DTCNO 0 to 511 Digital Trunk Controller Number
Enter the number of the DTC to which the
trunk group member is assigned.
DTCCKTNO 0 to 19 Digital Trunk Controller Circuit Number
Enter the number of the DTC circuit card to
which the trunk group member is assigned.
DTCCKTTS 1 to 24 Digital Trunk Controller Circuit Time-Slot
Enter the number of the circuit card DS-1
time-slot to which the trunk group member
is assigned.
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The following example MAP display shows sample datafill for table TRKMEM:
CLLI EXTRKNM SGRP MEMVAR _________________________________________________ F514T13TISIT048 1 0 DTC 13 19 24 S5AAA807IPTLA 0 0 DTC 5 1 1 |
Datafilling Table STDPRTCT
The following table shows the datafill specific to trunk-to-line translations for table STDPRTCT. Only those fields that apply directly to trunk-to-line translations are shown:
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Datafilling Table STDPRTCT
Subfield or
Field Refinement Entry Explanation and Action
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EXPRTNM Alphanumeric External Standard Pre-Translator Name
(up to 8 Enter the key defined by the operating
characters) company to represent the standard
pre-translator subtable.
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STDPRT See note Standard Pre-Translator
The field is an index into subtable STDPRT.
Note: This field does not accept any input.
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The following example MAP display shows sample datafill for table STDPRTCT:
EXPRTNM STDPRT AMAPRT ___________________________ P807 (1) (65021) |
Datafilling Subtable STDPRTCT.STDPRT
The following table shows the datafill specific to trunk-to-line translations for subtable STDPRTCT.STDPRT. Only those fields that apply directly to trunk-to-line translations are shown:
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Datafilling Subtable STDPRTCT.STDPRT
Subfield or
Field Refinement Entry Explanation and Action
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FROMDIGS Numeric From Digits.
(up to 18 digits) Enter the digit or digits to be translated.
If the entry represents a block of
consecutive numbers, enter the first
number in the block.
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TODIGS Numeric To Digits
(up to 18 digits) If field FROMDIGS represents a block of
consecutive numbers, enter the last number
in the block.
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PRETRTE See subfield Pre-Translation Route
This field consists of subfield PRERTSEL
and its refinements, TYPECALL, NOPREDIG,
TRANSYS, and POS.
PRERTSEL N Pre-Translator Route Selector
Enter "N".
TYPCALL DD, OA, NP, or NL Type of Call
Enter the type of call: DD (Direct Dial), NP
(No Prefix), OA (Operator Assisted), or NL
(Nil).
For Traffic Operator Position System (TOPS)
calls, there can be a mixture of 0 and 1 (OA
and DD) call types. Enter "NL" for these
cases.
NOPREDIG 0 to 7 Number of Prefix Digits
Enter the number of digits that are to
be interpreted as prefix digits.
TRANSYS IN, IP, or NA Translation System
Enter "IN" if the translation routes to
international translations (on a local and
toll combined switching unit only).
Enter "IP" if the translation routes to
international partitioned translations
(DMS-250 only).
Enter "NA" if the translation routes to
national translations.
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The following example MAP display shows sample datafill for subtable STDPRTCT.STDPRT:
FROMDIGS TODIGS PRETRTE _______________________________ 807 807 N DD 3 NA |
Datafilling Table HNPACONT
The following table shows the datafill specific to trunk-to-line translations for table HNPACONT. Only those fields that apply directly to trunk-to-line translations are shown:
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Datafilling Table HNPACONT
Subfield or
Field Refinement Entry Explanation and Action
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STS 0 to 9,999,999 Serving Translation Scheme
Enter an SNPA or STS code.
HNPACODE See note Home Numbering Plan Area Code
This field is an index into subtable HNPACODE.
Note: This field does not accept any input.
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The following example MAP display shows sample datafill for table HNPACONT:
STS NORTREFS NOAMBIGC RTEREF HNPACODE ATTRIB RTEMAP _____________________________________________________________________ 514 98 0 ( 72) ( 1) ( 24) ( 0) 807 201 1 ( 31) ( 1) ( 14) ( 0) |
Datafilling Subtable HNPACONT.HNPACODE
The following table shows the datafill specific to trunk-to-line translations for subtable HNPACONT.HNPACODE. Only those fields that apply directly to trunk-to-line translations are shown:
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Datafilling Subtable HNPACONT.HNPACODE
Subfield or
Field Refinement Entry Explanation and Action
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FROMDIGS Numeric From Digits
(3 digits) Enter the number representing a single code
or the first in a block of consecutive codes
that have the same input data.
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TODIGS Numeric To Digits
(3 digits) If field FROMDIGS represents a single code,
enter the same single code as in field
FROMDIGS. If field FROMDIGS represents
the first number of a block of consecutive
numbers, enter the last number in the block.
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CDRRTMT See subfield Code Type, Route Reference, or Treatment
This field consists of subfield CD.
CD DN Code Type
Enter DN for terminating office code and
datafill refinements SNPA and NXX.
SNPA Numeric Terminating Serving Numbering Plan Area
(3 digits) Enter the SNPA of the called terminating line
DN. If the operating company uses screening
to intraswitch SNPAs, translation of the
dialed digits proceeds to table TOFCNAME,
using SNPA and NXX as the key.
NXX Numeric Terminating NXX
(3 digits) Enter three digits for the NXX code of the
called terminating line DN.
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The following example MAP display shows sample datafill for subtable HNPACONT.HNPACODE:
FROMDIGS TODIGS CDRRTMT ________________________________ 546 546 DN 514 546 457 457 DN 807 566 |
Datafilling Table TOFCNAME
The following table shows the datafill specific to trunk-to-line translations for table TOFCNAME. Only those fields that apply directly to trunk-to-line translations are shown:
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Datafilling Table TOFCNAME
Subfield or
Field Refinement Entry Explanation and Action
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AREACODE 0 to 9,999,999 Area Code
The area code identifies a major geographical
area served by the switch. This field can
contain one to seven digits. In a North
American office, the area code must be
three digits in length.
Enter an area code that has been defined
in table SNPANAME or table HNPACONT.
-----------------------------------------------------------------------------------------
OFCCODE 0 to 9,999,999 Office Code
or $ The office code is a subregion of the area
code. It can have zero to seven digits.
In a North American office, the office
code must be three digits in length.
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The following example MAP display shows sample datafill for table TOFCNAME:
AREACODE OFCCODE ___________________ 514 546 807 566 |
Datafilling Table DNINV
Table DNINV contains the data for all assigned and unassigned DNs. Table DNINV is a read-only table. Information is added to it as DNs are assigned of used in other tables such as LENLINES.
The following table shows the datafill specific to trunk-to-line translations for table DNINV. Only those fields that apply directly to trunk-to-line translations are shown:
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Datafilling Table DNINV
Subfield or
Field Refinement Entry Explanation and Action
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AREACODE 0 to 9,999,999 Area Code
(1 to 7 digits) The area code identifies a major geographical
area served by the switch. If office
parameter ACTIVE_DN_SYSTEM in table OFCENG
is set to North American, the area code must
be three digits long.
-----------------------------------------------------------------------------------------
OFCCODE 0 to 9,999,999 Office Code Digit Register
(1 to 7 digits) The office code is a subregion of the area
code. If office parameter ACTIVE_DN_SYSTEM
in table OFCENG is set to North American,
the area code must be three digits long.
The office code must be specified in table
TOFCNAME.
-----------------------------------------------------------------------------------------
STNCODE 0 to 99,999,999 Station Code
(1 to 8 digits) The station code identifies a unique station
within the terminating office. If office
parameter ACTIVE_DN_SYSTEM in table OFCENG
is set to North American, the area code must
be one or four digits in length. If one
digit is entered, it is treated as a D-digit,
where the D-digit represents the fourth digit
in the format ABC-DEFG.
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The following example MAP display shows sample datafill for table DNINV:
AREACODE OFCCODE STNCODE DNRESULT ________________________________________________ 514 546 2225 H 57 0 807 566 3000 L HOST 04 0 00 |
Datafilling Table HUNTGRP
Table HUNTGRP is datafilled if the called line belongs to a hunt group.
The following table shows the datafill specific to trunk-to-line translations for table HUNTGRP. Only those fields that apply directly to trunk-to-line translations are shown:
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Datafilling Table HUNTGRP
Subfield or
Field Refinement Entry Explanation and Action
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HTGRP 0 to 8,191 Hunt Group Number
Enter the hunt group number assigned to
the hunt group.
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DN Numeric Directory Number
(up to 15 digits) Enter the listed DN of the hunt group.
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GRPTYP DNH Hunt Group Type
Enter DNH and datafill refinement TRMOPT.
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GRPDATA TRMBOPT Y or N Terminating Billing Option
If the optional terminator software package
is provided, and if a record is generated
for each call to a member of the hunt group,
enter "Y". Otherwise, enter "N".
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The following example MAP display shows sample datafill for table HUNTGRP:
HTGRP SNPA DN GRPTYP GRPDATA
________________________________________________________________
57 514 5462225 DNH N N N RCVD N N N N N N 4 $
|
Datafilling Table HUNTMEM
Table HUNTMEM is datafilled if the called line belongs to a hunt group.
The following table shows the datafill specific to trunk-to-line translations for table HUNTMEM. Only those fields that apply directly to trunk-to-line translations are shown:
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Datafilling Table HUNTMEM
Subfield or
Field Refinement Entry Explanation and Action
-----------------------------------------------------------------------------------------
HTGRP 0 to 8,191 Hunt Group Number Key
Enter the hunt group number to which
the member belongs.
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HTMDATA See subfield Hunt Member Data
This field consists of subfield SEL.
SEL B, D, L, or P Select Hunt Group Type
Enter one of the following:
* B - Bridged Night Number
* D - Directory Number
* L - Multiline or Distributed Line
* P - Multiple Position
If the entry in this field is "D", complete
subfields DN and BNNDAT.
DN Numeric Directory Number
(up to 15 digits) Enter the DN assigned to the hunt group
sequence number.
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The following example MAP display shows sample datafill for table HUNTMEM:
HTGRP SEQNO INSERT HTMDATA
_______________________________________
57 0 N D 5462225 N
|
Datafilling Table LENLINES
The following table shows the datafill specific to trunk-to-line translations for table LENLINES. Only those fields that apply directly to trunk-to-line translations are shown:
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Datafilling Table LENLINES
Subfield or
Field Refinement Entry Explanation and Action
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LEN See note Line Equipment Number
This field defines the physical location
of the equipment that is connected to a
specific telephone line.
Note: Field LEN consists of subfields SITE,
FRAME, UNIT, DRAWER or LSG, SHELF, SLOT, and
CIRCUIT.
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PTY R1 to R5, Party and Ringing Combination
T1 to T5, or S If the line is assigned to a two-, four-,
eight-, or ten-party line, enter the party,
R1 to R5 or T1 to T5, of the DN assigned to
the line. If the line is assigned to an
individual line, enter "S" for single party.
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LNATTIDX 0 to 2,047 Line Attribute Index
Enter the index into table LINEATTR.
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The following example MAP display shows sample datafill for table LENLINES:
LEN PTY RINGCODE DN SIGTYPE LNATTIDX OPTLIST
______________________________________________________________________________
HOST 05 0 16 17 S 0 5462225 DT 108 $
HOST 04 0 00 19 S 0 5663000 DT 8 $
|
Translation Verification Tools
The following example shows the output from TRAVER when it is used to verify trunk-to-line translations. No pre-translator is specified.
>TRAVER tr S5AAA807IISLA 5663000 b TABLE TRKGRP S5AAA807IISLA IT 0 NPDGP NCRT IC DD MIDL 000 P807 NSCR 807 000 N N $ TABLE OFCVAR AIN_OFFICE_TRIGGRP NIL TABLE STDPRTCT P807 ( 1) (65021) 0 . SUBTABLE STDPRT WARNING: CHANGES IN TABLE STDPRT MAY ALTER OFFICE BILLING. CALL TYPE DEFAULT IS NP. PLEASE REFER TO DOCUMENTATION. . 807 807 N DD 3 NA . SUBTABLE AMAPRT . KEY NOT FOUND . DEFAULT VALUE IS: NONE OVRNONE N TABLE HNPACONT 807 201 1 ( 31) ( 1) ( 14) ( 0) 0 . SUBTABLE HNPACODE . 457 457 DN 807 566 AIN Info Collected TDP: no subscribed trigger. AIN Info Analyzed TDP: no subscribed trigger. TABLE TOFCNAME 807 566 TABLE DNINV 807 566 3000 L HOST 04 0 00 19 AIN Term Attempt TDP: no subscribed trigger. TABLE DNATTRS TUPLE NOT FOUND TABLE DNGRPS TUPLE NOT FOUND +++ TRAVER: SUCCESSFUL CALL TRACE +++ DIGIT TRANSLATION ROUTES 1 LINE 8075663000 ST TREATMENT ROUTES. TREATMENT IS: GNCT 1 120T0 +++ TRAVER: SUCCESSFUL CALL TRACE +++ |