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Claims  |
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We claim:
1. A switching system adjunct for use in conjunction with a telephone
switch to provide enhanced telephone services to at least one telephone
subscriber served by said telephone switch and comprising:
a programmable switch providing first and second sets of interfaces,
wherein one of said interfaces within said first set is for connection to
at least one path in a plurality of paths emanating from a telephone
switch;
at least one peripheral device connected to an interface within said second
set;
means for storing a sequence of functional components which form a service
script and which collectively define an enhanced service; and
a host processor connected to said storing means, said peripheral device
and said programmable switch and for connection through a datalink to said
telephone switch for controlling said peripheral device and said
programmable switch in a manner defined by said service script in order to
provide the enhanced service to a telephone subscriber; wherein the
adjunct, in response to a message received over said datalink regarding a
corresponding telephone call that is routed by said telephone switch over
said one path to said adjunct, is able to take control over said telephone
call substantially throughout the remainder of its duration in order to
provide said enhanced service to said one subscriber.
2. The adjunct of claim 1 further comprising means for controllably
terminating the routed call within said adjunct or directing the routed
call through said programmable switch to a second one of said paths
substantially throughout the remainder of the duration of said routed
call.
3. The adjunct of claim 2 wherein said host processor includes service
control means operative in conjunction with said storing means for
executing the service script to provide said enhanced service, wherein
said service control means comprises:
means responsive to a trigger for accessing the service script from said
storing means in order to provide an accessed service script; and
means responsive to a returned result and a state of said accessed service
script for selecting one of said functional components in said accessed
service script for current execution; and
said host processor further includes switching control means operative in
conjunction with said storing means for appropriately controlling said
programmable switch to selectively perform telephone switching operations
involving individual ones of said paths, wherein said switching control
means comprises:
means responsive to said one functional component for invoking said
programmable switch to perform a desired switching operation involving
said routed telephone call appearing on a first one of said paths and for
producing, when appropriate, said returned result;
means responsive to said programmable switch for detecting an event
associated with a corresponding condition of said telephone call; and
means responsive to said detected event for generating said trigger.
4. The adjunct of claim 3 wherein said switch invoking means further
comprises means for decoding said one functional component into a
corresponding sequence of instructions for appropriately controlling said
programmable switch.
5. The adjunct of claim 4 wherein said host processor further comprises:
means operative in conjunction with said storing means and responsive to a
code existing within said message for invoking a pre-defined sequence of
functional components so as to appropriately process said routed call.
6. The adjunct of claim 5 further comprising: means for receiving a
telephone call appearing over one of said paths and placed to a logical
number associated with a particular subscriber and for re-directing the
received call over another one of said paths to a physical number
associated with the particular subscriber.
7. The adjunct of claim 6 wherein the adjunct further comprises means for
producing a different trigger for an incoming call, an outgoing call, a
no-answer, a busy line, a remote access or an occurrence of a specified
time and date.
8. The adjunct of claim 7 wherein said event detecting means further
comprises means for detecting timer events.
9. The adjunct of claim 3 further comprising: means responsive to said one
functional component for appropriately controlling the peripheral device.
10. The adjunct of claim 9 wherein the peripheral device controlling means
further comprises: means responsive to said one functional component for
generating, when appropriate, a request for service by said peripheral
device.
11. The adjunct of claim 10 wherein said peripheral device controlling
means further comprises: means for decoding said one functional component
into a corresponding sequence of instructions for appropriately
controlling said peripheral device.
12. The adjunct of claim 11 further comprising: means responsive to said
service request for scheduling a task as requested by said one functional
component for said peripheral device and, upon availability of said
peripheral device to perform a task, instructing said peripheral to
perform the scheduled task.
13. The adjunct of claim 12 wherein said peripheral device comprises: a
voice messaging system for recording and playing back voice messages.
14. A telephone switching system for providing an enhanced telephone
service comprising:
a telephone switch for serving at least one telephone subscriber connected
thereto; and
a switching system adjunct connected to said telephone switch by a datalink
and at least one path in a plurality of paths emanating from said
telephone switch, wherein the adjunct stores a corresponding service
script associated with the one subscriber and which defines an enhanced
service for the subscriber such that the adjunct, in response to a message
that is received over said datalink from said telephone switch regarding a
corresponding telephone call that is routed by said telephone switch over
said one path to said adjunct, executes said service script and takes
control over said telephone call substantially throughout the remainder of
the duration of the telephone call in order to provide the enhanced
service to said one subscriber, wherein the adjunct comprises:
a programmable switch providing first and second sets of interfaces wherein
an interface within said first set is connected to said one path;
at least one peripheral device connected to an interface within said second
set;
means for storing a sequence of functional components which form the
service script; and
a host processor connected to said storing means, said peripheral device
and said programmable switch and connected through said datalink to said
telephone switch for controlling said peripheral device and said
programmable switch in a manner defined by said service script in order to
provide the enhanced service to said one subscriber.
15. The telephone switching system of claim 14 further comprising: means
for controllably terminating the routed call within said adjunct or
directing the routed call through said programmable switch to a second one
of said paths substantially throughout the remainder of the duration of
said telephone call in order to provide said enhanced service.
16. The telephone switching system of claim 15 wherein the message
comprises a telephone number for a calling party and a code indicative of
a condition under which the telephone switch routed the telephone call to
said one path.
17. The telephone switching system of claim 16 wherein said host processor
includes service control means operative in conjunction with said storing
means for executing the service script to provide said enhanced service,
wherein said service control means comprises:
means responsive to a trigger for accessing said service script from said
storing means in order to provide an accessed service script; and
means responsive to a returned result and a state of said accessed service
script for selecting one of said functional components in said accessed
service script for current execution; and
said host processor further includes switching control means operative in
conjunction with said storing means for appropriately controlling said
programmable switch to selectively perform telephone switching operations
involving individual ones of said paths, wherein said switching control
means comprises:
means responsive to said one functional component for invoking said
programmable switch to perform a desired switching operation involving
said routed telephone call appearing on a first one of said paths and for
producing, when appropriate, said returned result;
means responsive to said programmable switch for detecting an event
associated with a corresponding condition of said telephone call; and
means responsive to said detected event for generating said trigger.
18. The telephone switching system of claim 17 wherein said switch invoking
means further comprises means for decoding said one functional component
into a corresponding sequence of instructions for appropriately
controlling said programmable switch.
19. The telephone switching system of claim 18 wherein said host processor
further comprises: means operative in conjunction with said storage means
and responsive to said code existing within said message for invoking a
pre-defined sequence of functional components so as to appropriately
process said routed call.
20. The telephone switching system of claim 19 further comprising: means
for receiving a call appearing over one of said paths and placed to a
logical number associated with a particular subscriber and for
re-directing the received call over another one of said paths to a
physical number associated with the particular subscriber.
21. The telephone switching system of claim 17 further comprising: means
responsive to said one functional component for appropriately controlling
the peripheral device.
22. The telephone switching system of claim 21 wherein the peripheral
device controlling means further comprises: means responsive to said one
functional component for generating, when appropriate, a request for
service by said peripheral device.
23. The telephone switching system of claim 22 wherein said peripheral
device controlling means further comprises: means for decoding said one
functional component into a corresponding sequence of instructions for
appropriately controlling said peripheral device.
24. The telephone switching system of claim 23 further comprising: means
responsive to said service request for scheduling a task as requested by
said one functional component for said peripheral device and, upon
availability of said peripheral device to perform a task, instructing said
peripheral device to perform the scheduled task.
25. In a telephone switching system, a method for providing enhanced
telephone services to at least one telephone subscriber connected to a
telephone switch comprising:
in said telephone switch routing a telephone call involving a subscriber
from the telephone switch over a first path connecting said telephone
switch to a switching system adjunct and generating a message, regarding
said routed telephone call, over a datalink connecting said telephone
switch to said switching system adjunct, wherein said message includes a
telephone number for a calling party and a code indicative of a condition
under which the telephone switch routed the telephone call to said first
path; and
in said switching system adjunct and in response to said message executing
a pre-defined corresponding service script which is associated with said
subscriber and which defines an enhanced service for that subscriber,
taking control of said routed telephone call substantially throughout the
remainder of its duration so as to provide the enhanced service to said
subscriber and controllably terminating the routed call within said
adjunct or directing the routed call to a second path connecting said
telephone switch to said adjunct substantially throughout the remainder of
the duration of said telephone call in order to provide said enhanced
service.
26. The method in claim 25 further comprising in said adjunct:
executing the service script within a host processor to provide said
enhanced service, wherein said service script contains a sequence of
functional components that collectively define said enhanced service and
wherein said executing comprises:
accessing in response to a trigger said service script from a storage means
connected to said host processor in order to provide an accessed service
script; and
selecting in response to a returned result and a state of said accessed
service script one of said functional components in said accessed service
script for current execution; and
selectively performing telephone switching operations within said host
processor, wherein said selective performing comprises:
invoking in response to said one functional component a programmable switch
connected to said host processor and to said first and second paths to
perform a desired switching operation involving said routed telephone call
appearing on the first path and producing, when appropriate, said returned
result;
detecting through said programmable switch an event associated with a
corresponding condition of said routed telephone call; and
generating said trigger in response to said detected event.
27. The method in claim 26 wherein said switch invoking further comprises:
appropriately decoding said one functional component into a corresponding
sequence of instructions for controlling said programmable switch.
28. The method in claim 27 further comprising in the adjunct: invoking in
response to said code existing within said message a pre-defined sequence
of functional components so as to appropriately process said routed call.
29. The method in claim 28 further comprising in the adjunct: receiving a
call appearing over one of said paths and placed to a logical number
associated with a particular subscriber, and re-directing the received
call over another one of said paths to a physical number associated with
the particular subscriber.
30. The method in claim 26 wherein said selective performing further
comprises: controlling, when appropriate and in response to said one
functional component, a peripheral device that is connected to said
programmable switch and to said host processor.
31. The method in claim 30 wherein said peripheral device controlling
further comprises: generating in response to said one functional component
a request for service by said peripheral device.
32. The method in claim 21 wherein said peripheral device controlling
further comprises: decoding said one functional component into a
corresponding sequence of instructions for appropriately controlling said
peripheral device.
33. The method in claim 32 wherein said peripheral device controlling
further comprises:
scheduling in response to said service request a task requested by said one
functional component for said peripheral device; and
instructing said peripheral device to perform the scheduled task in
response to availability of said peripheral to perform said task.
34. A telephone switching system for providing an enhanced telephone
service comprising:
a telephone switch for serving at least one telephone subscriber connected
thereto; and
a switching system adjunct connected to said telephone switch by a datalink
and at least one path in a plurality of paths emanating from said
telephone switch, wherein the adjunct stores a corresponding service
script associated with the one subscriber and which defines an enhanced
service for the subscriber such that the adjunct, in response to a message
that is received over said datalink from said telephone switch regarding a
corresponding telephone call that is routed by said telephone switch over
said one path to said adjunct, executes said service script and takes
control over said telephone call substantially throughout the remainder of
the duration of the telephone call in order to provide the enhanced
service to said one subscriber.
35. In a telephone switching system, a method for providing enhanced
telephone services to at least one telephone subscriber connected to a
telephone switch comprising:
in said telephone switch routing a telephone call involving a subscriber
from the telephone switch over a path connecting said telephone switch to
a switching system adjunct and generating a message, regarding said routed
telephone call, over a datalink connecting said telephone switch to said
switching system adjunct; and
in said switching system adjunct and in response to said message executing
a pre-defined corresponding service script which is associated with said
subscriber and which defines an enhanced service for that subscriber and
taking control of said routed telephone call substantially throughout the
remainder of its duration so as to provide the enhanced service to said
subscriber. |
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Claims |
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Description |
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BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a multi-service telephone switching system which
includes a programmable adjunct that is to be used in conjunction with a
local switching system for providing enhanced telephone services.
2. Description of the Prior Art
A large expanding market exists for enhanced telephone services. Currently,
enhanced telephone services, such as call waiting, speed calling and call
forwarding, are provided through a local telephone switching system. Local
switching systems that provide these services are generally large,
handling upwards of 50,000 separate lines, and are typified by the 1AESS
and 5AESS electronic switching systems manufactured by American Telephone
and Telegraph (AT&T) Corporation. In general, telephone switches directly
inter-connect local calling and called parties and, when required for long
distance communication, route telephone calls from a calling party over a
series of one or more trunk lines to a local switch situated some distance
away from the calling party and located in the vicinity of the called
party.
At present, these electronic switching systems are computer controlled with
the specific switching functions implemented in a series of software
routines which are commonly referred to as generics. These generics are
developed by the switch manufacturer and then loaded into the switch for
subsequent use at a customer's site, typically a local switching office.
Through these generics, the switch is able to provide a pre-defined
selection of enhanced services to any local customer that is connected to
the switch.
As in any industry, customer needs frequently change over time. The
telephone industry is no exception. For example, once a customer has
utilized a particular enhanced service for a period of time sufficient for
him or her to discover its limitations, the customer will demand an
improved service that cures these limitations. For example, call waiting
was offered, initially a few years ago, to provide a service through which
customers would not automatically miss a telephone call if their line was
busy. In essence, this service first provided a signal (typically a short
tone) to a called party on a busy line that another party was attempting
to reach him and then allowed the called party to switch between the two
calling parties by flashing a switch hook on his telephone. At first, this
service adequately met customer demand. However, after this service was
used by a customer for a sufficient period of time, the customer quickly
realized that every telephone call that occurred during the time his line
was busy would generate a tone on his line regardless of who was calling
him. This occurred simply because the local switch, which provided this
service, was not programmed to discriminate between incoming calls to a
customer. Yet many customers find that some calls are more important than
others. Hence, call waiting customers felt that calls from certain parties
could be interrupted while calls from other parties were simply too
important and could not be interrupted. Therefore, a demand, yet
unsatisfied, has arisen for selective call waiting in which the customer
would define those telephone numbers to the local telephone operating
company that are important to him. An incoming call from any of these
numbers, that would occur during the time the customer's line was busy,
would be allowed to generate a tone and interrupt any on-going call on
that line. The customer could then switch back and forth between the two
callers at will. Incoming telephone calls from other numbers would simply
receive a busy signal. Similarly, new service demands constantly arise
from customer experiences with other presently available enhanced
services.
Therefore, enhanced services that are new, when first introduced, later
become commonplace after being used for several years and spawn a demand
for new services. Hence, to maximize revenue, local telephone operating
companies must constantly change their available service mix to satisfy
customer demand. Thus, the development of enhanced services should ideally
become an ongoing rapid evolutionary process between a telephone company
and its customers. Unfortunately, in practice, this is simply not the
case, as will now be discussed.
As noted above, software generics that provide enhanced services reside
within the local switch. Because these generics are developed by the
switch manufacturer and not by the local telephone companies, the local
telephone companies generally must rely on the switch manufacturer to
develop and then disseminate an entirely new set (a so-called "release")
of generics or alternatively supplement an existing release with various
new generics before any new enhanced services could be offered to
customers, even on a trial basis. This generally necessitated a complete
or substantial re-programming of a switch. Specifically, these generics
often vary widely among switches produced by different manufacturers.
Inasmuch as a local telephone company frequently utilizes switches from a
variety of different manufacturers, the local telephone company simply
does not have the resources to expeditiously write generics for each
different switch it uses and therefore must rely on the switch
manufacturer to do so. Consequently, the local telephone companies are
constrained to wait until the switch manufacturer completes a lengthy
development effort to offer, what it believes to be, either a new release
of generics or supplementary generics to an existing release. Now, even
when either of these events occurs, the new release (or supplementary
generics from an existing release) has yet to be loaded into an
operational switch for field trials (actual market tests) in order to
accurately assess customer demand for the newly available enhanced
services. Frequently, during the course of such a trial, the local
telephone company learns that certain services, just now provided by the
switch manufacturers are not particularly useful or usable by customers
while other services, not previously foreseen or implemented by the
manufacturer, are highly in demand. These results are then fed back to the
switch manufacturer which, in turn, appropriately modifies the current
generics in the present release. As one can appreciate, this iterative
development process results in both a great deal of delay and considerable
expense to the switch manufacturers in developing each release and
substantial business opportunities and concomitant revenues that are
missed by the local telephone companies. Moreover, there is no guarantee
that, when the modified release becomes available in a fully operational
release, the marketplace demand for certain enhanced telephone services
will still remain. In particular, as the capability of the telephone
network increases, a customer who demands a particular enhanced service
might well decide, over time, to utilize a readily available substitute,
though non-identical service, for the service initially demanded. This, in
turn, decreases the eventual sales for the initially demanded service once
that service finally becomes available. Hence, as the delay lengthens
between the time a demand for a particular enhanced service is first
foreseen and the time that service is finally implemented in an
operational release and then made available to customers on a wide scale,
increasing uncertainty, as to the ultimate marketplace acceptance of this
new service, will tend to corrupt any early prediction of revenue for this
service.
Thus, as can be seen, the long lead times associated with developing fully
functional generics has, in the past, and continues to significantly
inhibit the ability of local telephone companies to expeditiously develop
and field test new enhanced telephone services and then modify the
services, if necessary, to quickly satisfy customer demand. As a result,
local telephone companies often provided enhanced telephone services that
were out of step with current customer demand and were thereby unable to
tap significant business opportunities. Now, if new services could be very
quickly developed and expeditiously trialed on a small scale, then the
local telephone companies would be much more able to adequately define
each new service to meet customer requirements and rapidly deploy that
service with a markedly reduced chance of failure than that which
presently occurs.
Thus, a need exists for a telephone switching system that can readily
provide new enhanced telephone services without requiring that any of the
generics utilized in a local telephone switch be re-programmed.
SUMMARY OF THE INVENTION
The above-described drawbacks in the provisioning of new enhanced telephone
services are advantageously eliminated in accordance with the teachings of
the present invention by a multi-service telephone switching system that
utilizes a programmable adjunct in conjunction with a telephone switch.
Specifically, this system includes a telephone switch that serves at least
one subscriber and an adjunct that is connected to the telephone switch
both through one or more distinct paths, such as a number of hunt group
lines, and through a datalink, such as a simplified message desk datalink.
The telephone switch routes a telephone call (e.g. forwards an incoming
call and directly connects an outgoing call) involving this subscriber to
the adjunct through an available hunt group line and provides a
corresponding message to the adjunct over the datalink. This message
typically specifies the calling number and a condition under which the
call was routed to the available hunt group line. In response to this
message, the adjunct takes complete control of the call substantially
throughout the remainder of its duration and provides a desired enhanced
service that has been pre-defined by a service script stored within the
adjunct.
In particular, the telephone switch, typically a local switch, is connected
to each one of a plurality of telephone subscribers through a separate
corresponding one of a plurality of lines. The adjunct itself utilizes: a
programmable switch providing first and second sets of interfaces, wherein
various ones of the first set are connected to corresponding lines within
the hunt group supplied by the telephone switch; at least one peripheral
device connected to a particular interface within the second set; a
storage device, typically a disk drive; and a host processor connected to
the telephone switch, via the simplified message desk datalink, and also
connected to the storage device, the peripheral device and the
programmable switch.
In operation, the host processor controls the peripheral device and the
programmable switch in accordance with a sequence of functional components
which form a service script. The service script is stored within the
storage device and collectively defines an enhanced service. To provide an
enhanced service anytime during the call, the adjunct routes a call, that
has been forwarded by the telephone switch, through the programmable
switch throughout the remainder of the duration of the call in order for
the adjunct to exercise substantial control over the call during this
time. Since at this point and thereafter the adjunct has substantially
complete control over the call, it is able to provide enhanced services to
either the caller or called party on that call independently of any
software, such as generics, executing within the local switch. This, in
turn, eliminates any need to re-program the telephone (local) switch to
provide the enhanced service.
Service scripts are sequences of functional components. Each functional
component is a high level command that provides a certain function
required to provide an enhanced service. An entire set of functional
components provides all the necessary commands, in terms of high level
telephone switching operations, to provide enhanced services. For example,
some of these functional components, when executed, instruct the
programmable switch to transmit a digit, collect a dialed number,
establish a voice path through the switch between a caller and either a
called party or a peripheral, and the like. Other functional components,
when executed, instruct the peripheral device to provide a specific
function, such as play a message, record a message, synthesize or
recognize speech and the like.
Now, whenever an enhanced service is to be provided, specifically in
response to a so-called trigger, an appropriate service script is read
from a storage device. An interpretive process, illustratively called the
SCP Process, determines, based upon an immediately prior state of the
script and the value of a returned result, which functional component in
the script is to be executed. The appropriate functional component is then
sent to another process, illustratively referred to as the SSP Process.
This process, similar to a run time compiler, decodes each functional
component it receives into a pre-determined sequence of instructions. This
sequence is used to appropriately instruct the programmable switch or a
peripheral device used in the adjunct to perform the desired function
specified by the functional component. Once the function has been
performed, the SSP Process may provide a returned result. In addition, the
SSP Process also detects events and sets appropriate triggers to invoke
associated service scripts for separately processing each detected event.
These events may originate within the programmable switch, such as
illustratively an incoming call or a busy line, or may take the form of a
software event occurring within the host processor, such as a time-out
indication provided by a software timer.
By separating the software used to provide service logic functions (i.e.
functional components) from the software used to implement actual
switching and peripheral functions (decoding process), a programmer
developing new telephone services is substantially, if not completely,
relieved of the need to know any details of both the software which
controls actual switching operations on the telephone switch and the
software which controls actual switching and peripheral operation on the
adjunct. Re-programming a short relatively simple high level service
script becomes all that is required to provide a new enhanced service.
Furthermore, the developed service script becomes independent of the
actual hardware used in the adjunct. Consequently, the service logic
(service scripts) becomes easily transportable; while, the switching logic
(decoding process) is customized for a particular adjunct being controlled
(e.g. much like a compiler is written for the instruction set of a
particular machine; while the high level code to be compiled is usually
machine independent, i.e. tansportable and executable on computers having
significantly disparate instruction sets). Thus, use of the inventive
adjunct advantageously permits enhanced telephone services to be quickly
developed, trialed and modified, as needed, in order to expeditiously
satisfy customer demand with a minimal expenditure of time and effort.
To easily provide enhanced services through existing telephone switches,
each subscriber, in accordance with a preferred embodiment of the present
invention, has two telephone numbers. One such number is a logical or
published number. This is the number known to the telephone switch and is
the one that others would dial to reach this subscriber. The other number
is a physical number known only to the adjunct. Incoming calls to a
subscriber's logical number are routed by the telephone switch
(illustratively using a "call forwarding" feature) to a hunt group line.
The call is then routed by the adjunct through the programmable switch for
the duration of the call and, based upon the services desired by the
called party and the condition (e.g. answered, busy or not answered) of
his telephone line, routed to the physical number of the called party to
ring his telephone or, for call forwarding, to the physical number of
another party in order to ring the telephone there.
In accordance with a feature of the present invention, the adjunct can
provide enhanced services based upon call screening. Since the adjunct, at
least with respect to calls originating within a service area of the local
switch, obtains the calling party's telephone number (so-called ANI
information) from the local telephone switch for each incoming call,
enhanced services can be provided which selectively prevent calls from
reaching a subscriber or which selectively allow calls to be routed to the
subscriber based upon the number of the calling party or information
obtained through a database access using the number of the calling party.
BRIEF DESCRIPTION OF THE DRAWING
The teachings of the present invention can be readily understood by
considering the following detailed description in conjunction with the
accompanying drawing, in which:
FIG. 1 is a block diagram of a preferred embodiment of a system, that
incorporates the teachings of the present invention, for providing
enhanced telephone services;
FIG. 2 is a block diagram showing typical call flow through inventive
system 100, depicted in FIG. 1, for processing an incoming telephone call;
FIG. 3 is a block diagram showing typical call flow through inventive
system 100, depicted in FIG. 1, for processing an outgoing telephone call;
FIG. 4 shows the proper alignment of the drawing sheets for FIGS. 4A-4D;
FIGS. 4A-4D collectively depict a block diagram of Modular Switching Node
(MSN) 400 that forms a portion of inventive system 100 shown in FIG. 1;
FIG. 5 is a block diagram of "#" sign detector 500 shown in FIGS. 4A-4D;
FIG. 6 diagrammatically shows an overview of the organization of and
inter-process communication occurring within the software executing on
host processor 490 shown in FIGS. 4A-4D;
FIG. 7 depicts a flowchart of SCP Process Routine 700 shown in FIG. 6;
FIG. 8 shows the proper alignment of the drawing sheets for FIGS. 8A-8C;
FIGS. 8A-8C collectively depict a flowchart of SSP Process Routine 800
shown in FIG. 6;
FIG. 9 shows the proper alignment of the drawing sheets for FIGS. 9A and
9B;
FIGS. 9A and 9B collectively depict a flowchart of Load Database Routine
900 that is executed as part of SSP Process Routine 800 shown in FIGS.
8A-8C;
FIG. 10 depicts a flowchart of SMD N - No Answer Routine 1000 that is also
executed as part of SSP Routine 800 shown in FIGS. 8A-8C;
FIG. 11 depicts a flowchart of SMD B - Busy Routine 1100 that is also
executed as part of SSP Routine 800 shown in FIGS. 8A-8C;
FIG. 12 depicts a flowchart of SMD D - Directly Dialed Routine 1200 that is
also executed as part of SSP Routine 800 shown in FIGS. 8A-8C;
FIG. 13 shows the proper alignment of the drawing sheets for FIGS. 13A and
13B;
FIGS. 13A and 13B collectively depict a flowchart of SMD A - Forwarded Call
Routine 1300 that is also executed as part of SSP Routine 800 shown in
FIGS. 8A-8C;
FIG. 14 shows the proper alignment of the drawing sheets for FIGS. 14A and
14B;
FIGS. 14A and 14B collectively depict a flowchart of Software Event Routine
1400 that is also executed as part of SSP Process Routine 800 shown in
FIGS. 8A-8C;
FIG. 15 shows the proper alignment of the drawing sheets for FIGS. 15A and
15B;
FIGS. 15A and 15B collectively depict a flowchart of Off Hook Routine 1500
that is also executed as part of SSP Process Routine 800 shown in FIGS.
8A-8C;
FIG. 16 depicts a flowchart of On Hook Routine that is also executed as
part of SSP Process Routine shown in FIGS. 8A-8C;
FIG. 17 shows the proper alignment of the drawing sheets for FIGS. 17A-17C;
FIGS. 17A-17C collectively depict a flowchart of Digit Collection Routine
1700 that is also executed as part of SSP Process Routine 800 shown in
FIGS. 8A-8C;
FIG. 18 depicts a flowchart of Answer Functional Component (FC) Routine
1800;
FIG. 19 depicts a flowchart of Call Forward FC Routine 1900;
FIG. 20 depicts a flowchart of Check ANI FC Routine 2000;
FIG. 21 shows the proper alignment of the drawing sheets for FIGS. 21A and
21B;
FIGS. 21A and 21B collectively depict a flowchart of Check Message FC
Routine 2100;
FIG. 22 depicts a flowchart of Collect Digits FC Routine 2200;
FIG. 23 depicts a flowchart of Customer Answer FC Routine 2300;
FIG. 24 depicts a flowchart of Dialing FC Routine 2400;
FIG. 25 shows the proper alignment of the drawing sheets for FIGS. 25A-25B;
FIGS. 25A-25B collectively depict a flowchart of Give Path FC Routine 2500;
FIG. 26 depicts a flowchart of Go To FC Routine 2600;
FIG. 27 depicts a flowchart of Hang-Up FC Routine 2700;
FIG. 28 depicts a flowchart of Quit FC Routine 2800;
FIG. 29 depicts a flowchart of Page FC Routine 2900;
FIG. 30 depict a flowchart of Play Voice Message FC Routine 3000;
FIG. 31 shows the proper alignment of the drawing sheets for FIGS. 31A and
31B;
FIGS. 31A and 31B collectively depict a flowchart | | |
