Automatic Number Announcement Circuit
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

   The  Automatic Number Announcement Circuit (ANAC) is used by telephone
   company  employees  to verify the telephone number assigned to a cable
   pair  or  a  distributing  frame location. To insure changes are being
   made to the correct line an ANAC verification is done before any cable
   pair  or  distributing  frame locations changes are made on an working
   line.

   The  ANAC is usually accessed by the telephone company employee in the
   following manner:

     1. Locate  the  cable/pair  or  distributing  frame  location to be
        changed.

     2. Use a test set to get dial tone from this line,

     3. Dial  an  access  code,  usually  a  three digit code or a 7 digit
        number, to the ANAC circuit.

     4. The ANAC circuit responds with the telephone number of the calling
        line to the employee.

   ANAC circuits are external to the 5ESS-2000 Switch and are accessed by
   a  trunk group built with a trunk class of CAMA (Centralized Automatic
   Message  Accounting.)  For ANAC circuits a CAMA trunk group out pulses
   the  called  number  followed by the information digit of zero and the
   calling  number.  The  ANAC  circuit  receives  the calling number and
   repeats  the  number  back via an audio response unit to the line that
   dial the access code.

   The  following  table  show the signaling between the 5ESS-2000 Switch
   and an Automatic Number Announcement Circuit:

   ***********************************************************************

   5ESS-2000 Switch Signaling                    ANAC signaling
   --------------------------                    --------------

   Access code is dialed to ANAC


   Seizes ANAC Trunks

                                                 Winks Back

   KP + Access Code (3 or 7 digits) + ST

                                                 Off Hook

   KP + "0" (Zero information Digit) + 
   7 digit ANI number of calling line

                                                 Play back Number on 
						 Audio Response Unit


                                                 On Hook

   Releases ANAC Trunk

   ***********************************************************************

   Additional  information  on  CAMA  signaling  may  be  found in LUCENT
   Technologies  documentation  235-900-108, Product Specifications, sec.
   3.4.9 CAMA Signaling.

   ANAC Test Plan
   ~~~~~~~~~~~~~~

   This  test  is to establish a ANAC circuit in the 5ESS-2000 Switch and
   the  announcement  system.  Test calls will be made from an analog and
   ISDN line to verify the proper announcement is played. Verification of
   output  messages  from both systems and call disconnect sequences will
   be observed.

    1. Establish  5ESS-2000 Switch Translations for ANAC. (See the Recent
       Change Section of this document)

    2. Establish OEM announcement system software for ANAC.

    3. Dial the access code for ANAC from a analog phone.

    4. The  announcement  system  should  replay  the telephone number of
       analog line.

    5. Hang up the analog phone.

    6. Verify the telephone number of the ANAC test phone, by calling the
       line from another line.

    7. Dial the access code for ANAC from a analog phone.

    8. The  announcement  system  should  replay  the telephone number of
       analog line.

    9. Verify  the call disconnects properly by remaining off hook on the
       analog  phone  until  the  call  disconnects  (usually less than 1
       minute).

   10. Verify  no  unexpected  messages  were  received  on the 5ESS-2000
       Switch Receive Only Printer (ROP).

   11. Verify  no  unexpected  messages were received on the announcement
       system log file.

   12. Dial the access code for ANAC from a ISDN phone.

   13. The announcement system should replay the telephone number of ISDN
       line.

   14. Hang up the ISDN phone.

   15. Verify the telephone number of the ANAC test phone, by calling the
       line from another line.

   16. Dial the access code for ANAC from a ISDN phone.

   17. The announcement system should replay the telephone number of ISDN
       line.

   18. Verify  the call disconnects properly by remaining off hook on the
       ISDN  phone  until  the  call  disconnects  (usually  less  than 1
       minute).

   19. Verify  no  unexpected  messages  were  received  on the 5ESS-2000
       Switch Receive Only Printer (ROP).

   20. Verify  no  unexpected  messages were received on the announcement
       system log file.