Nortel DMS-100 Enhanced 911 Direct Access to ALI Controller Table (E911ALI)

Table Name

Enhanced 911 Direct Access to ALI Controller

Functional Description of Table E911ALI

Table E911ALI contains one entry for each Public Safety Answering Point (PSAP) in the tandem that requires the Automatic Location Identification (ALI) interface.  The key to this table is the PSAP name (field PSAPNAME), as defined in table E911PSAP.

This table implements an interface between a DMS-100 switch that serves as an E911 tandem with external 911 equipment, and a previous connection to an Automatic Number Identification (ANI) concentrator.  This interface is asynchronous, with ASCII data links located between the Multi-Protocol Controller (MPC) card on the DMS switch and ALI data links connected to an ALI controller.  This interface was originally designed specifically for the AT&T ALI controller, which is typically connected to the AT&T Data Management System.  The "E911 Direct Access to ALI Database" and "E911 Wireless Interface" features have expanded the interface to support other ALI controllers.

Datafill Sequence & Size

The following tables must be datafilled after table E911ALI:

The number of entries in table E911ALI is the number of PSAPs that require ALI service.  The table size is 0 to 7,000 tuples.

Datafill

The following table describes datafill for table E911ALI:

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Table E911ALI Field Descriptions

Field       Subfield       Entry                     Explanation and Action
----------------------------------------------------------------------------------------------
PSAPNAME                   See Subfield              Public Safety Answering Point Name Key
                                                     This field consists of subfield PSAPNAME.
						     This is the key to the table.

            PSAPNAME       Alphanumeric              Public Safety Answering Point Name
	                   (1 to 16 characters)      Enter the PSAP name.  This entry must 
			                             correspond to an entry in table E911PSAP.
----------------------------------------------------------------------------------------------
PSAPNUM                    0 to 999                  Public Safety Answering Point Number
                                                     Enter the number of the PSAP receiving ALI 
						     service.  Individual positions are numbered
						     within the PSAP.  This value must be
						     with datafill in the ALI system
						     computer, and with the values entered when
						     assigning the ALI option to individual 
						     lines.
----------------------------------------------------------------------------------------------
IFTYPE                     ATT911AS, OPN911AS,       Interface Type
                           ENH911AS, WLS911          Enter the type of interface to the ALI 
			                             system computer.  This value must 
						     correspond to the MPC application name
						     entered in table MPCFASTA.
----------------------------------------------------------------------------------------------
LSETIDX                    0 to 15                   Link Set Index
                                                     This number corresponds to the number of
						     the MPC linkset defined in table MPCLSET
						     for use by the data links serving this 
						     PSAP.  Each unique index specifies a unique
						     instance of an ALI interface between the
						     AT&T database and the ALI controller.
----------------------------------------------------------------------------------------------
-End-

Datafill Example

The following example MAP display shows sample datafill for table E911ALI.


PSAPNAME     PSAPNUM     IFTYPE     LSETIDX
___________________________________________
POLICE       3           ATT911AS   0
FIRE         22          WLS911     1