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    Digital Receiver Line Checks                      Bulletin 3030 12/15/92  
    Copyright (C) 1992, Coastal Security Systems, Inc.  All rights reserved.  
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    The central station checks digital receiver lines at three hour intervals
using an autodialer which is capable of sensing the receiver's handshake tone.
The autodialer is programmed from a list of receiver telephone numbers which
is maintained by the central station manager.  Dealers who forward lines to
the central station must specifically arrange with the central station manager
to have the forwarded line periodically checked.

    There are several types of receiver lines:

HOUSE   A "house" receiver line is a telephone line owned by the central station
        which is connected directly to the line card on a receiver.

DEALER  A "dealer" receiver line is a telephone line owned by a dealer but
        located in the central station which is connected directly to the line
        card on a receiver.

CF      A call forwarding receiver line is a line which is installed at some
        location other than the central station and which is forwarded to a
        dealer or house line.  Forwarding is established and can be changed
        by dialing feature codes (#72 and #73) on a telephone connected to
        the forwarded line.

RCF     A remote call forwarding receiver line is a line which exists only at
        Southern Bell's switching office.  Forwarding is established and can
        be changed by placing an order with the Southern Bell business office.
        RCF lines cannot be forwarded to a local number or to a number which
        also has call forwarding features.

RACF    A remote access call forwarding (RACF) receiver line is a line which is
        installed at some location other than the central station and which is
        forwarded to a DEALER or HOUSE line.  Forwarding is established and
        can be changed by calling a remote access number provided by Southern
        Bell.  A secret PIN number is required to establish, re-establish or
        change forwarding.

SWITCH  A switched line is an 800 number which is switched to an ordinary phone
        line.  The ordinary phone line can be a house or dealer line connected
        to an alarm receiver or it can be forwarded (CF or RACF) to one.

    When the central station autodialer fails to connect with an alarm receiver
a signal is produced which must be handled by a central station operator.  The
signal will include the receiver telephone number and will identify the central
station receiver and line card.

CENTRAL STATION PROCEDURE:

The central station operator will look at the receiver to see if the line card
is busy.  If not, the central station operator will call the receiver number.
If the operator reaches the line card and hears the handshake tones, the event
is cancelled.  If the operator cannot reach the receiver or if the line card
remains busy without producing valid alarms, the operator will notify the
central station supervisor.

    The supervisor will check the receiver hardware.  If faulty, the entire
receiver will be replaced and all lines re-tested.  Otherwise, the supervisor
will isolate the exact telephone line which has failed.  The corrective action
taken will depend upon the type of line found to be faulty.

1.  Faulty RCF lines are reported to Southern Bell repair and the dealer.

2.  If an RACF line is faulty and the dealer has furnished the central station
    with the remote access number and PIN code the supervisor will immediately
    re-establish forwarding.  Otherwise, the dealer will be notified.

3.  If a CF line is faulty the dealer will be notified.

4.  A faulty dealer line is reported to Southern Bell repair and the dealer is
    immediately notified.

5.  A faulty house line is reported to Southern Bell special services.  If the
    repair cannot be completed in less than two hours, the supervisor will
    try to arrange for a temporary receiver line to be available for forwarded
    lines.  At this point all affected dealers will be notified.