MXPA96005409A - A system to provide prioritized connections in a network of published service lines - Google Patents

Abstract

The invention uses a suppressed transient oscillation connection, switched through the structure of the existing call systematization switch, to connect two CPEs for long duration, low priority calls. The suppressed transient oscillation connection is implemented so that the connection is disconnected if an incoming call is made to one of the CPEs or a service exit request of one of the CPEs. If the suppressed transient oscillation connection is disconnected due to a normal service request to or from one of the CPEs, the system of the invention automatically resets the suppressed transient oscillation connection after the normal service call has ended so that The suppressed transient oscillation connection can be maintained on an almost permanent basis. As a result, the transient oscillation connection can be maintained for long-term connections without interrupting the normal input or output service to any of the connected CPEs.

Description

A SYSTEM TO PROVIDE PRIORITIZED CONNECTIONS IN A NETWORK OF COMMUTED PUBLIC SERVICE LINES BACKGROUND OF THE INVENTION The invention relates generally to public switched line networks and, more particularly, to a system for providing prioritized connections using a suppressed transient oscillation connection. It should be appreciated that when in existing public switched telephone lines a normal connection is made between telephone sets or other equipment in the unbundled premises (CPE) such as computers, terminals, multi-media equipment or the like, that connection remains established until it is disconnected manually in one of the CPEs. In this way, the established connection has a fixed priority over the other calls to any of the two connected CPEs for the duration of the call. Any additional attempt to connect any of the two CPEs by a calling subscriber will be denied, as indicated by a busy signal to the calling subscriber, or by the institution of a service such as waiting call, queuing , REF: 22916 voice mail or similar. As a result, long-term connections between two subscribers, such as continuous communications with a CPE or long-term data transfers, ensure connection and prevent any of the switched subscribers from making or receiving additional calls. It is also known from the prior art how to provide suspended transient oscillation connections in which a service or utility or other entity can access such a CPE, such as a service meter or utility to transmit data without a transient oscillation warning signal ^ An exemplary suppressed transient oscillation system is described in US Patent No. 5,189,694 issued to Garland. A characteristic of such a system is the ability to disconnect the connection when the called subscriber picks up. In this way, if a service or utility is reading a meter at the subscriber's premises and the subscriber has picked up, the suppressed transient oscillation connection is disconnected so that the outgoing call can be made. Such a system, however, does not disconnect the suppressed transient oscillation connection when an incoming call is attempted to the subscriber. As a result, the existing suppressed transient oscillation connections are more suitable for short-term connections, such as meter readings or the like, where the connection is maintained for a very short period of time and the interruption of incoming calls is minimal . In addition, it is also known from the prior art how to provide priority service to preselected individuals in certain limited circumstances. For example, military communications systems often give priority to calls from a high-ranking officer, so that such calls to the line or directory number of that individual have a fixed priority over the other calls. Such high priority calls can also be found in some governmental and corporate communication systems. These systems are limited to providing high priority service to a very narrowly defined group of individuals on a line-by-line basis, who have a coded special status within a limited communications system and do not have the problem of long-term connections, of low priority of general availability over a switched public service telecommunications network. Thus, there is a problem in the art, since there is no prioritized connection over the public switched telecommunications network that does not prevent the service from being output or input to the connected subscribers and can be used advantageously for connections of Long duration.

BRIEF DESCRIPTION OF THE INVENTION The invention solves the problem noted above and, uses a suppressed transient oscillation connection, switched through the structure of the existing call systematization switch, to connect two CPEs for long duration, low priority calls. The suppressed transient oscillation connection is implemented so that the connection is disconnected if an incoming call is made to one of the CPEs or a service exit is requested from one of the CPEs. The specific handling of the low priority call could be handled by a service profile maintained in the network by the subscriber that determines the process by which the connection is disconnected. In the preferred embodiment, if the suppressed transient oscillation connection is disconnected due to the normal service request to or from one of the CPEs, the system of the invention automatically resets the suppressed transient oscillation connection after the normal service call has finished, so that the long-term transient oscillation connection can be maintained on an almost permanent basis. As a result, the suppressed transient oscillation connection can be maintained for long-term connections without interrupting the normal input or output service to any of the connected CPEs. Alternatively, a prioritized, switched connection can be used through the structure of the existing call systematization switch to connect two CPEs. The connection is implemented so that the connection is disconnected if an incoming call is made to one of the CPEs or when service is requested from one of the CPEs that has higher priority than the priority of the existing connection. The specific handling of the low priority call could be handled by a service profile maintained in the network by the subscriber that determines the process by which the connection is disconnected. The system of the invention provides a low priority connection that is generally available for any CPE in the network.

BRIEF DESCRIPTION OF THE DRAWINGS • FIGURE 1 is a block diagram showing the system of the invention; FIGURE 2 is an example of the service parameters for handling low priority connections; FIGURE 3 is a flow diagram showing the operation of the system of the invention.

DETAILED DESCRIPTION OF THE INVENTION Referring more particularly to FIGURE 1, the system of the invention consists of a switching system of central station 2 connected to other switches in the network of public service switching lines 4 on trunks between stations 6 as is well known in The technique. The switching system 2 may consist of one of a family of 5ESS® switches manufactured and sold by AT & T, as described in US Patent No. 4,592,048 issued to Beckner et al. on May 27, 1996 and in AT &T Technical Journal, Volume 64, No. 6, part 2, pp. 1205-1524, or any other suitable switching system. The switching system 2 operates as is well known in the art to switch voice and data through the network. The architecture of one such switching system is shown and includes a communication module 8 that forms a spindle and has a plurality of switching modules 10, and an administration module 12 emanating therefrom. Each switching module 10 is controlled by the microprocessor 14 and the memory 15 and provides the systematization of the calls, time division switching, and signaling of the lines and trunks to which it is connected. Each switching module includes the line units 16 that provide the interconnection to the local circuits 18 that connect to the premises of the subscriber's premises 26 and trunk units 20 that provide interconnection to the trunks 6 that connect to the other switches in the network, as well as to service telemetry trunks (UTT) 22, as will be described later herein. The administration module 12 provides functions that can be centralized, such as maintenance control, air interconnection, text and database management, call routing and location of time slots. The management module 12 consists of a control unit such as the AT & T 3B21D dual processor and a main memory. In some switching systems, the management module is aided by a separate processor that performs some administrative functions. The communication module 8 is the spindle of the switching system and allows communication between the management module 12 and the switching modules 10. The switching module 8 consists of a message switch that provides message communication of the administration module to the switching module and switching module to switching module, and a time multiplexed switch provides the connection of the time slot of switching module to switching module and of the switching module to the management module for communication and distribution synchronized voice and data. It is also known in the art how to use an advanced intelligent network (AIN) 17, where AIN 17 can be accessed through the switching system 2 to provide enhanced call systematization services. The switching system 2 has access to the AIN 17 when a call systematization request "hits" a preselected tripping circuit in the switching system 2, as is known in the art. The trip circuit may be a request for a particular call feature or service, wherein the systematization of the call for that service or feature is carried out in the AIN 17. The switching system 2 is connected to the local circuits 18 which consist physically of a pair of wires, cables or copper fibers that define the local lines that connect to the equipment of the subscriber's premises (CPE) such as telephones 28, service meters 30, electrical device controllers 32, multiple media equipment 34, terminals 36, medical equipment 38, safety equipment 40 or other devices. As described in the application Serial No. 08 / 522,215, co-pending, entitled Ring Circuit Test System Using a Surprised Transient Oscillation Connection, filed on August 31, 1995, the CPEs can be connected to the local lines via a network gateway device or telemetry interconnection unit (TIU) 42 such as those that are independently steerable to allow selective communication to any of the CPEs. A separate network interconnection device 44 (NID) can be provided to define the interconnection between the CPE and the network or the (NID) can be integrated into the TIU. Such network can support analog services or Integrated Services Digital Network (ISDN) for voice and data. A central station service unit (COSU) 46 is connected to the switching system 2 over one or more service telemetry trunks (UTT) 22 for the trunk to the line connection and by a dial or dedicated 48 line through the service provider, for the connection of the calling subscriber. A calling unit 50 is also connected to the switching system on a dedicated or dialing line 52. The calling unit 50 consists of any identity that requires a long-term connection to a CPE on a low priority basis. In an exemplary embodiment, the CPE consists of the medical equipment 38 such as a blood pressure monitoring device, cardiac monitoring device, respiratory monitoring device or the like and the calling unit 50 constitutes a monitoring station located in a hospital or another facility for health care, so that the health care facility receives continuous, long-term, real-time data regarding the condition of the person being monitored. In another exemplary embodiment, the CPE is an electrical apparatus 40 controlled by a processor, such as a furnace, air conditioner or the like and the calling unit is an agency that continuously monitors the data of the electrical apparatus for the management of the use of energy. or environmental control. The CPE could also consist of the terminal 36 or the multi-media equipment 34 that is receiving a long-term data transfer wherein the calling unit is the data source, such as the internet or a software or software service provider. and programming systems. It should be appreciated that the system of the invention can be used for any long-term, low priority connection and that the calling unit and the associated CPE can perform a variety of functions. In addition, although unit 50 has been defined as the "calls" unit, it should be appreciated that the call could be initiated from one of the CPEs. Finally it should be understood that the call could be between CPE where the calling CPE establishes a suppressed transient oscillation connection, via the entry of a numerical code or other instruction as part of the call establishment request. As will be appreciated, line 48 is connected to line 52 through the switching structure of switching system 2, in the same manner as normal voice and data connections, to allow call unit 50 to communicate with COSU 46. As explained in detail in US Patent No. 5,189,694 issued to Garland on February 23, 1995; U.S. Patent No. 5,243,644 issued to Garland et al. on September 17, 1993; and U.S. Patent No. 5,327,488 issued to Garland on July 5, 1994, COSU 46 and UTT 22 are used to establish a suppressed transient oscillation connection between, for example, a service company and a service meter located in the premises of the subscriber, to allow the service company to determine the use of the service by a subscriber. The suppressed transient oscillation connection connects the service or other service to the CPE without an audible alert being displayed at the subscriber's premises. The existing suppressed transient oscillation systems disconnect the suppressed transient oscillation connection when the subscriber makes a service request such as off-hook. As a result, the suppressed transient oscillation connection does not interrupt the user's exit service. Because the suppressed transient oscillation connection is used for relatively short duration calls (for example, a meter reading connection can last 2-5 seconds), the disconnected transient oscillation connection is not provided in the prior art. when an incoming call is directed to the premises. When a connection request is made to the switching system that houses a local circuit already connected over the suppressed transient oscillation connection, the calling party receives a "busy" signal. As a result, suppressed transient oscillation connections prevent the input service. While the incoming service is deactivated, the short expected duration of calls makes this interruption minimally acceptable. Thus, existing systems do not provide disconnection or interruption of the suppressed transient oscillation connection for incoming calls or long-term, low priority calls. The COSU 46, as is known, creates one or many connections in which the line 48 (which is connected to the line 52 via the switching system 2) can be connected to a plurality of UTT 22. In this way, the COSU 46 serves to multiplex and demultiplex the signals that are transmitted between line 48 and UTT 22. The UTTs are, in turn, connected to the local lines 24 via the switching system 2. The existing COSU design is capable to process a large number of calls simultaneously and more than one COSU can be associated with a switching system to increase the capacity of that switching system, if desired. As a result, the exemplary calling unit 50 can communicate in a large number of CPEs simultaneously. In addition, more than one call unit can be connected to the switching system 2 to have access to the COSU 46, so that a plurality of entities can be provided with the long-term, low priority connection of the invention from the same. switching system. It should be further appreciated that the COSU 46 can be connected to more than one switching system, if desired, as illustrated in Figure 1 where the UTT 54 connects the COSU 46 to a second switching system 56. As a result, a Single call unit can be connected to CPEs housed by different switching systems. It is also known in the art how to integrate the COSU 46 into the switching system. To provide the long-term, low priority connections of the invention, the switching system 2 is provided with the capability to determine the suppressed transient oscillation connection, for incoming as well as outgoing calls. It should be appreciated that in existing switching systems, when a connection is made to or from a local line 24, the switching module 10 hosting the local line changes the state of the line from "unoccupied" to "busy". In the illustrated switching system, the state is maintained in the memory 15 associated with the units of line 16 of the individual switching module 10.; however, it should be appreciated that the state can be maintained in any place accessible by the commutation system. As a result, when an input request is made by a connection to a busy line, the processor of the switching module 14 checks the occupied / idle state of the line. If the verification shows that the line is busy, the connection to the line can not be completed and a busy tone is sent to the originating CPE indicating that the call can not be completed.

In order to carry out the method of the invention, it is necessary to distinguish between a normal call and the low priority call of the invention. In this way, when a suppressed transient oscillation connection is made to a local line 24 housed by a switching module 10, that switching modules sets a status of "busy-low priority", so that when a request for input or output for a connection for that line for a connection that has a high priority, the switching system will be warned that there is a low priority connection and that it can be interrupted to allow the new connection to be made. Through the use of the state "busy-low priority", the low priority call can be disconnected by any incoming or outgoing calls. To establish the "busy-low priority" state in the switching module 10, the switching system 2 must allow the connection request to be for a suppressed, low priority transient oscillation connection. This can be achieved either by dedicating line 52 (which connects the call unit 50 to the switching system 2) to handle only that type of calls or by entering a code that the calling subscriber (or equipment) has that is recognized by the system switching and request for transient oscillation suppressed, low priority. In any case, the fact that the connection is a suppressed, low priority transient oscillation connection will be made known to the switching system and the status of the line in the switching module will be designated accordingly. Because the suppressed transient oscillation connection, as used in the present invention, is interrupted by both incoming and outgoing calls, its usefulness for long-term calls could be minimized if there were not some mechanisms to re-establish the connection after which is interrupted by a normal call. It should be appreciated that telephone systems exist that offer a service to subscribers where, if the subscriber dials a "busy" line, the switching system, either automatically as part of a subscription service or upon receipt of a request from the user, will verify the User's line and busy line and will establish a connection when both lines are idle. The system of the invention uses the same mechanism to re-establish the low priority call. Specifically, when a low priority call on a particular local line is interrupted by either an incoming or outgoing call, the switching system will verify the local line and automatically re-establish the low priority call when the normal call ends, as indicated by a service profile. Referring to FIGURE 1, the switching system verifies the line as is well known in the art for detecting the off-hook condition, indicating that the normal call has ended, and restores the low priority call, either by re-establishing the low priority on the switch or sending a signal to the original caller, indicating that the line is available and allowing the original caller to initiate the new connection. Alternatively, the low priority call may be placed without hanging as is known in the art, in addition to being disconnected, when a higher priority call is received and may be reset after the highest priority call has ended. Alternatively, the mechanisms for restoring the call could be internal to the calling unit 50. When the suppressed transient oscillation connection ends, the calling unit can automatically re-establish the suppressed transient oscillation connection as if there were a new connection, making attempts to establish the call at regular time intervals (ie, every 30 seconds) until the connection is restored. In this way, the low priority call can be maintained effectively indefinitely by automatically resetting the suppressed transient oscillation connection after the interruption of the suppressed transient oscillation connection has been interrupted. To determine the specific handling of the low priority call, a service profile is created at the time of subscribing the subscriber to the service that defines how the low priority calls of the subscriber will be handled. Service profiles are created by selecting various service parameters to create a system for handling low priority calls, which is uniquely suited to the needs of the subscriber. Referring to FIGURE 2, a table of exemplary service parameters is shown which shows various classes of service to which a subscriber may subscribe, wherein each class of service provides different handling of low priority calls. It should be appreciated that different classes of service can be provided at different service rates and that other options can be provided to those specifically described. The examples of the different options available to the subscriber are defined in the first column and the different classes of services are defined in the remaining three columns. For example, for the lowest service class, Service Level I, the low priority call ends immediately after a normal service request. The low priority call has a maximum duration of one hour and no warning messages are given to the subscriber before disconnecting the low priority call. The subscriber can not pass over the termination of the low priority call and the network does not restore the low priority call after the normal call disconnection. Finally, a minimum time interval during which the low priority call will remain connected is not guaranteed. For a slightly higher fee, the subscriber can obtain Service Level II. Compared to Service Level I, the subscriber gets a slightly longer call duration (for example, 5 hours). The interruption of the low priority call is not immediate, in addition the service provider allows a delay period for predetermined (eg 0 to 5 seconds) time during which a warning is given to the subscriber that the low priority call will be disconnected and the subscriber is allowed to pass over the disconnection of the low priority call. Specifically, it is contemplated that the subscriber, by entering a predetermined code, may pass over the disconnection of the low priority call and in effect transform the low priority call into a normal call. Upon receipt of the coded subscriber signal the switch changes the status of the call, as maintained in the switching module, from "busy-low priority" to "busy-normal". In this kind of service, the low priority call is also automatically reset after the normal call disconnection, as described above, and the subscriber is guaranteed a minimum connection time (for example 6 seconds) before the call is made. low priority be disconnected. Service Level III provides the subscriber with greater capacity. For example, the maximum duration of the call is longer (for example, unlimited). The subscriber is also provided with the ability to define parameters such as the time of delay before disconnection and the time at which the warning message must be provided. The subscriber can also be provided with the ability to change the parameters on a per-call basis by typing preselected codes. For example, before each call the subscriber can define whether the low priority call is to pass over a disconnection as discussed above. The subscriber can also define on a per-call basis, if the low priority call is to reset and extend the minimum guaranteed connection time.

It is also contemplated that the designation of a call as, of "low" priority may be made by the called subscriber, instead of the calling subscriber. For example, a user could subscribe to a service level where a call made to that subscriber (ie the subscriber is the called subscriber) is automatically designated as low priority by the switching system after the call has been made. connected for a predetermined period of time. In this manner, a called subscriber, after being connected for a certain predetermined period of time (for example 60 minutes), will receive any higher priority calls, so that a prolonged call will not prevent the incoming service of the called subscriber indefinitely. The service profile of the individual subscriber can be maintained in the memory 15 of the switching module 10 in the AIN 17 or in any database accessible by the switching system. Although a set of parameters selected with reference to Figure 2 has been described, it should be appreciated that other parameters may be offered and that the combination of parameters is not limited to what is specifically described. Also, around the service could provide a single universal level of service if you wish. It is also contemplated that multiple levels of prioritized service can be provided where the lower priority level can be interrupted by a higher priority level. When multiple priority levels are provided, the state of the call set in the switching module shall consist of the "busy" designation and the specific priority level of the call such as "busy-priority one", "busy-priority two" or similar. In addition, the AIN can be used to control the handling of calls in the system of the invention.

Specifically, when a request for a connection is received from a CPE in the switching system 2, a first trigger circuit of the AIN is activated so that the AIN 17 gives the switching system the disposition of the request. For example, where the request is for a line connected to an existing call, the AIN 17 could direct the switching system 2 to give a busy signal to the CPE or interrupt an existing call, if the existing call has a lower priority than the addition of incoming connection, and complete the connection to the CPE. Similarly, when a call ends, another trigger circuit of the AIN is activated. In response to that firing circuit, the AIN 17 gives the switching system 2 the arrangement of any call previously interrupted to restore or not restore the interrupted call. The operation of the system of the invention will be described with reference to Figure 2. The operation begins when the calling unit or CPE requests a long-term, low priority call, by picking up or entering a predetermined code, and identifies a CPE called entering a directory number or other distinctive code (block 201). The switching system 2 links the service profile of the subscriber (block 202) and the COSU 46 establishes a suppressed transient oscillation connection between the call unit and the CPE identified in the request and the switching system designates the connection status as "busy-low priority" (block 203). The suppressed transient oscillation connection is maintained until a normal service request is made to or from a CPE on the local line (block 204), at which time the low priority suppressed transient oscillation connection is handled as set forth in the service profile of the subscriber (block 205). The switching system verifies the local line (block 206) and detects the disconnection of the normal call (block 207). When the normal call ends the switching system determines whether the low priority call is to be restored by the service profile (block 208). If the low priority call is going to be reset, the illustrated process (block 203-208) continues for each higher priority call to or from a CPE on the activated line until the lower priority call is disconnected by one of the subscribers. If the low priority call is not to be restored, the subscriber line remains idle after the conclusion of the normal call (block 209). A further aspect of this invention is to provide a prioritized service using the normal call processing system, instead of using a suppressed transient oscillation connection described above. The use of the normal call processing system allows prioritized calls to be made virtually from any CPE. Referring more specifically to Figure 1, suppose that a subscriber calling the telephone 28 wishes to call a subscriber called to the telephone 60. While the telephone 60 shown is connected to the same switching system that hosts the telephone 28, it should be noted that the telephone 60 could be accommodated by any other switching system in the network 4. The calling subscriber, after initiating the dialing sequence of the telephone 60, enters a predetermined alphanumeric code in the telephone keypad indicating that the calling subscriber wishes a connection of low priority. Alternatively, a service profile of the subscriber maintained in the switching system 2 could designate a line as always obtaining low priority service so that the introduction of a code is not required. It should be understood that this kind of service may be available to all in a network or that the subscriber must subscribe specifically to the service. In addition, it was contemplated that the selection of the low priority connection may be provided at reduced rates to the subscriber. The switching system 2, after receiving the code of the telephone 28, is otherwise instructed from the service profile of the called or calling subscriber, completes the connection to the called subscriber in the telephone 60 and sets the status of the connection as "busy -low priority "in the memory of the switching module which accommodates both the telephone of the called subscriber 60 and the telephone of the calling subscriber 28. Thus, if a higher priority call is placed to either of the two connected telephones, interrupts the low priority connection. The handling of the interrupted call can be carried out as described above with reference to Figures 2 and 3 and more than one priority level can be offered. The use of call priority using normal call systematization does not provide all the advantages of the suppressed transient oscillation connection; however, it makes the call prioritization generally available without the need for the computer equipment associated with the creation and management of suppressed transient oscillation connections. It should be understood that the above description is only that of a preferred embodiment of the invention. Numerous different arrangements can be devised by one skilled in the art without departing from the scope of the invention. The invention is thus limited only as defined in the appended claims. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention. Having described the invention as above, property is claimed as contained in the following:

Claims (24)

1. A system for establishing low priority calls in a telecommunications network, characterized in that it comprises: a switching system for receiving a plurality of local lines and for switching calls to and from the local lines, the equipment of the subscriber's premises is connected to such lines; means for establishing a suppressed transient oscillation connection on a selected one of the plurality of lines to an equipment of the local of the particular subscriber connected to the selected one of the lines; means for disconnecting the transient oscillation connection suppressed when a request for a regular connection is made over the selected one of a plurality of lines; and means for establishing the transient oscillation connection suppressed when the regular connection ends.

2. The system according to claim 1, characterized in that the equipment of the premises of the particular subscriber constitutes a medical device.

3. The system according to claim 1, characterized in that the equipment of the premises of the particular subscriber constitutes an electrical device controlled by a processor.

4. The system according to claim 1, characterized in that the means for establishing a suppressed transient oscillation connection includes a central station service unit capable of establishing a plurality of transient oscillation connections suppressed simultaneously.

5. The system according to claim 1, characterized in that the call unit is connected to the equipment of the particular subscriber's premises.

6. The system according to claim 1, characterized in that the disconnection means include means for identifying the connection as low priority, the disconnection means operate in response to the identification means.

7. The system according to claim 1, characterized in that the means of restoration include means for verifying the state of the. selected from the local lines after the disconnecting means disconnects the suppressed transient oscillation connection, the verification means recognize when the selected one of the local lines is unoccupied.

8. The system according to claim 5, characterized in that the restoration means include means, controlled by the call unit, to periodically request that the suppressed transient oscillation connection be established.

9. The system according to claim 1, characterized in that a service profile is maintained in the switching system which defines how the disconnection of the suppressed transient oscillation connection will be handled.

10. The system according to claim 9, characterized in that the service profile is variable so that the handling of the suppressed transient oscillation connection can be modified.

11. A system according to claim 1, characterized in that the disconnection means and the restoration means include an advanced intelligent network, the advanced intelligent network provides instructions to the switching system to control the disconnections and restoration of the calls in response to the activation of the trigger circuit of a request for a connection or disconnection of a call.

12. A method for establishing prioritized calls in a telecommunications network, which includes a switching system that hosts a plurality of local lines where the equipment of the user's premises is connected to such lines, characterized in that it comprises the steps of: establishing a connection of transient oscillation suppressed on a selected one of the plurality of local lines between the equipment of the local of the particular subscriber to the selected one of the local lines and a call unit; and terminating the transient oscillation connection suppressed when an input or output request is made for a service on the selected one of the local lines.

13. A method for restoring low-priority, long-term connections in a telecommunications network that includes a switching system that hosts a plurality of local lines where the subscriber's local equipment is connected to the local lines, characterized in that it comprises the steps of: establishing a transient oscillation connection suppressed on one of the selected ones of the plurality of local lines to a particular subscriber's equipment connected to the selected one of the local lines; and disconnecting the transient oscillation connection when an input or output request is made for a regular connection over the selected one of the local lines; and establish the transient oscillation connection suppressed automatically when the regular connection ends.

14. A system for establishing prioritized calls with a telecommunications network, characterized in that it comprises: means to host a plurality of local lines and to switch calls to and from local lines, the equipment of the premises of the subscriber is connected to such means; means for establishing a suppressed oscillation connection on a selected one of the plurality of lines to a local equipment of the particular subscriber connected to the selected one of such lines; means for disconnecting the transient oscillation connection suppressed when a request is made for a regular connection on the selected one of the plurality of lines; and means for identifying the connection as low priority, the disconnection means operate in response to the identification means.

15. A system for establishing prioritized connections in a telecommunications network, characterized in that it comprises: a switching system for receiving a plurality of local lines and for switching calls to and from local lines, the local equipment of the subscriber is connected to such lines; means for establishing a connection having a defined priority on a selected one of the plurality of lines to an equipment of the premises of the particular subscriber connected to the selected one of the lines; and means for disconnecting such disconnection when a request for another connection having a higher priority than the priority defined over the selected one of the plurality of lines is made.

16. The system according to claim 15, characterized in that the resetting means includes a request for a low priority connection received in such switching system.

17. The system according to claim 15, characterized in that the disconnection means include means for identifying the connection as low priority, the disconnection means operate in response to the identification means.

18. The system according to claim 15, characterized in that it also includes means for restoring the connection when another connection ends, which includes means for verifying the status of the selected ones of the local lines after the disconnecting means disconnect such connection, the means Checks recognize when the selected one of the local lines is unoccupied.

19. The system according to claim 15, characterized in that the service profile maintained in the switching system defines how the disconnection of such connection will be handled.

20. The system according to claim 19, characterized in that the service profile is variable so that the handling of the connection may vary.

21. The system according to claim 15, characterized in that the disconnection means and the restoration means includes an advanced intelligent network, the advanced intelligent network provides instructions to the switching system to control the disconnection and restoration of calls in response to the activation of the trigger circuit of a request for a connection or disconnection of a call.

22. A method for establishing prioritized calls in a telecommunications network that includes a switching system that hosts a plurality of local lines, where the equipment of the subscriber's premises is connected to such lines, characterized in that it comprises the steps of: establishing a connection that has a predetermined priority in response to a predetermined priority request on a selected one of the plurality of lines between the first subscriber equipment connected to the selected one of the local lines and the second subscriber equipment; maintain a record of the predetermined priority in the switching system of the duration of the connection; and disconnecting the connection when an entry or exit request is made for a higher priority service over the selected one of the local lines.

23. A method for establishing prioritized connections in a telecommunications network, which includes a communication system that hosts a plurality of local lines where the equipment of the user's premises is connected to the local lines, characterized in that it comprises the steps of: establishing a connection having a predetermined priority over a selected one of the plurality of local lines to a computer of the particular subscriber connected to the selected one of the local lines; and disconnecting the connection when an entry or exit request is made for a connection of higher priority over the selected one of the local lines; and re-establish the connection automatically when the highest priority connection ends.

24. A system for establishing prioritized calls in a telecommunications network, characterized in that it comprises; means for receiving a plurality of local lines and for switching calls to and from the local lines, the equipment of the user's premises is connected to such lines; means for establishing a connection having a predetermined priority over a selected one of the plurality of lines to an equipment of the premises of the particular subscriber connected to the selected one of the lines; means for disconnecting the connection when a higher priority connection request is made on the selected one of the plurality of lines; means for identifying the priority of the connection, the disconnection means operate in response to the identification means.