Example #1A ESS Input Messages

ALT-START


                                          ID . . . . . . ALT-START
                                          GENERIC. . . . B12 and later 
                                          TTY. . . . . . MTCE, ALIT
                                          FEATURE. . . . CORE 
                                          APPLICATION. . 1A 
                                          PPU. . . . . . 
                                          TYPE . . . . . Input

1. PURPOSE

   Starts Automatic Line Insulation Tests (ALITs) at a specified directory 
   number, Line Remote Equipment Number (LREN), or Line Equipment Number 
   (LEN); or tests a single directory number, LREN, or LEN.

2. FORMAT

   ALT-START- a b c ddd dddd dddd.

3. EXPLANATION OF MESSAGE

   The test results are printed on the input teletypewriter via the AL01 
   output message.  If the request is for a sequential test, the plant 
   service center TTY will always receive a copy.  Fields 'a', 'b', and 'c' 
   are not entirely independent; see Table A.

   Note: Example of input required to perform the Tip and Ring Ground 
   (TRG) test on DN 682-2973, using the 0 to 2.5 MEG resistance range; 
   range 'c', assuming the office is provided for the high option: 
   ALT-START-DTC6822973****.

   a =   Control action code:

     =   S - Start sequential Directory Number (DN) testing at the 
         DN specified by the 11-character 'd' code.

     =   P - Start sequential Private Branch eXchange (PBX) DN 
         testing at the PBX DN plus extension number specified by 
	 the 11-character 'd' code.

     =   A - Start sequential Automatic Call Distribution (ACD) DN 
         testing at the ACD DN specified by the 11-character 'd' 
	 code.  This field is available when feature package ACD 
	 is loaded.

     =   D - Test the single DN or PBX DN plus extension number 
         specified by the 11-character 'd' code.

     =   L - Test the single LEN specified by the 11-character 'd' 
         code.  (In offices involved in a cutover, this request
         must not be used if the specified LEN is marked as precut 
	 inactive or postcut inactive.  It will result in the 
	 cutoffs being closed.)

     =   X - Start sequential LEN testing at the LEN specified by 
         the 11-character 'd' code.

     =   T - Test the single LREN specified by the 11-character 'd' 
         code.

         Note: This field is available whenever the RSS feature package is 
	 loaded.

     =   R - Start sequential LREN testing at the LREN specified by 
         the 11-character 'd' code, i.e., test the specified LREN 
	 and all higher LRENs in the specified RSS (first two 
	 digits of LREN).  (See Note above).

   b =   Type of test:

     =   S - Short circuit and ring ground test.
    
     =   T - Tip and ring ground test.

     =   F - Foreign potential tip and ring test.

     =   G - General test (all of the above).

     =   C - Contactor test.

   c =   Letter (A through D) used to specify one of four 
         resistance ranges within a group of ranges (see Table B). 
	 One of three groups (high, medium, or low) is selected by 
	 the cross-connect strapping on the line insulation test 
	 circuit. (See SD-1A141 for cross-connection information.) 
	 For Remote Switching System (RSS) offices, the RL ALIT 
	 field in the RSS common block specifies the high, medium, 
	 or low resistance group.
     
     =   E - If field 'b'  = C (contactor test).  (See Table B).


         TABLE A
	 ALLOWABLE COMBINATION TABLE

         FIELD 'a'          FIELD 'b'    FIELD 'c'

	 S,P,A,D,L,X,T,R    STGF         ABCD
                              C            E


         TABLE B
  	 CROSS-CONNECT GROUP SPECIFIED RESISTANCE RANGES

         HIGH                MEDIUM           LOW

	 a = 0 - 320K        0 - 80,000       0 - 80,000

         B = 0 - 1.25 MEG    0 - 320K         0 - 160K

         C = 0 - 2.5 MEG     0 - 1.25 MEG     0 - 640K

	 D = 0 - 5 MEG       0 - 5 MEG        0 - 2.5 MEG

	 E = 0 - 640k (always used for contactor testing)

   d =   An 11-digit field used to specify a DN, a PBX DN plus X 
         number, LEN or LREN.  The digits entered must be left- 
	 adjusted in the field and unused positions must be filled 
         with asterisks.  The field is interpreted in one of the 
         following four ways:

         1234567**** - 7-digit DN followed by four
	 asterisks used with 'a' = S, A, or D.

	 12345678*** - 8-digit LEN followed by three
         asterisks used with 'a' = L or X.

	 12345671234 - 7-digit DN followed by 4-digit 
	 extension number used with 'a' = D or P.

         1234567**** - 7-digit, LREN followed by four
	 asterisks used with 'a' = R or T.

4. SYSTEM RESPONSE

   NG =  Indicates that an invalid letter combination has been 
         entered, an incorrect number of digits has been specified 
	 for a given control action, or indicates that a DN will 
	 not result in an intraoffice DN when converted from BCD 
	 to binary.

   NO =  Indicates that a test is in progress and another test has 
         already been queued, or a sequential test has been 
	 requested while another sequential test is in progress.

   PF =  Indicates that the message has been received; AL01 output 
         message follows.

5. REFERENCES - FOR MORE DETAILS SEE

   PIDENT
     PR-6A852, ALIT1A00

   Practice
     231-090-052, Feature Document - Automatic Line Insulation Test Failure