ES2221547B1 - COMMUNICATION SYSTEM BETWEEN A CENTER OF OFFICE OF OPERATORS AND PROFESSIONAL RADIO SYSTEMS, USING AN ETHERNET NETWORK WITH VOICE OVER IP (VOIP). - Google Patents

Abstract

A communication system between a dispatch center, consisting of one or more operators, and a switching matrix provided with interfaces for one or more professional radio equipment, or equipment with fixed telephony, recorder, public address or other applications is described. The communication between the operators and the switching matrix is carried out by means of IP, both for data and for time (VoIP), with the use of a single physical channel constituted by a private local network, the Ethernet network, also allowing the realization of operations of control of the own matrix of commutation for the establishment of channels associated to the different functionalities, and the passage of data between the radio systems and the operators, so much identifying as of any other type coming from remote equipment, via radio.

Description

Communication system between a center dispatch of operators and professional radio systems, with use of an Ethernet network with voice over IP (VoIP).

Object of the invention

The present invention relates to a system of communication between an operator dispatch center and: systems Professional radio, using an Ethernet network with voice over IP (VoIP), which provides essential new features and Remarkable advantages with respect: to known and used media for the same purposes in the current state of the art.

More particularly, it proposes the development of a communication system between operators and the matrix of switching, in professional radio systems, based on the use :, of an internal local and private Ethernet network, with Voice over IP support (Internet Protocol), with: that considerable advantages are achieved with respect to usual communication systems, including the elimination of auxiliary wiring and incorporation into the operator system remote The configuration adopted by the system allows the data and voice communication (VoIP) through the same physical channel Ethernet, between operators on PC and a switching matrix with interfaces for TETRA radio systems, trunkin.g MPT-1327, subtone and 5 tones.

The scope of the invention is is included within the professional sector dedicated to general to the implementation of communications systems.

Background and summary of the invention

Those skilled in the art are knowledgeable about the existence in the market, of a wide variety of systems intended to allow the establishment of different types of communication, either by radio or with the use of mobile phone systems In this sense, the existence of international patent document no. WO-A-9905830, in which it is described an increased inter-operational function for interface of digital fax and cellular voice protocols and internet protocols, as well as the method supported by said function. Throughout the description of this document of patent, reference is made to its application to networks of radio telecommunications, for which not only its Internet application, but also with other internal networks.

As outlined above, the This invention finds its main application in systems of professional radio, and although it could also be applicable to others communication systems, for example mobile telephony, not This constitutes a fundamental objective of it.

Unlike with the previous patent document mentioned, the system of the present invention is included within from the professional radio network sector, which, to difference with radio networks for public services and commercial mobile telephony, consist of networks destined to closed groups of users, who must meet the requirements of user not satisfied by the other segment, among which include, for example, a fast call establishment, a great importance for group calls, a need for high system availability even in emergency situations, be sized to avoid saturation in situations limit, the need for security and confidentiality of communications, shorter and more concise communications, etc.

As you know, most of these networks are private networks, which use standards of the following types:

- Conventional analog Subtono (CTCSS, DCS), 5 tones (CCIR, ZVEI, EIA), APCO-16;

- Analog trunking: MPT-1327, LTR, SmartTrunk, EDACS;

- Digital trunking: TETRA, TETRAPOL,
APCO-25

The novel and distinctive feature compared to the above mentioned document is the adaptation of the previous standards of professional mobile radiotelephony at internal and exclusive networks such as the Ethernet network.

Thus, while in the case of the document of Previous Patent No. WO-A-9905830 its application is planned both with public Internet and with private and local area networks, the present invention presents the particularity with respect to said previous document, that it has not been designed to use a public network, but an internal network and exclusive, as is Ethernet. In this way, problems are avoided associated with other types of networks, such as saturation, or even access to the system from outside.

Brief description of the drawings

These and other features and advantages of the invention, will become more clearly apparent from the detailed description that follows in a preferred way of embodiment, given by way of illustration only and not limiting, with reference to the accompanying drawings, in the that:

Figure 1 shows a graphical representation, schematized, of the implementation of the system of the invention for the interconnection between an Operator Center and systems of professional radio

Figures 2 to 4 are graphic representations, schematized, of examples of communication between the matrix of switching and the server, the server and the client, and the array of switching and the client, respectively.

Description of the invention

As stated above, the detailed description of the invention will be carried out with use of the attached drawings, through which they use numerical references to designate the different parts of the system. In this sense, if you look at Figure 1 of the drawings, you can see the graphic representation of a system implemented according to the invention, in which a dispatch center, consisting of one or more operators 1 with a processor, preferably PC or server, connected to a matrix 3 switching, in which the various means have been integrated operational and interface with external equipment. In a variant corresponding implementation with a basic version of the system, an operator 1 could be directly connected to a computer Radio or telephone.

The software developed for each operator 1, It comprises different modules, among which it is worth highlighting:

- Control and integration of communications;

- GIS module with digital cartography, for graphic positioning of GPS terminals and points interest;

- A specific application module for each market segment, such as, for example, file management with their status, affected records, advice guides online, statistics, database control, etc.

According to the commented representation, each operator station 1 comprises a processor 2 preferably a PC, with one or two monitors, as appropriate, of which one of they are specifically intended to represent the mapping; It also includes the necessary accessories for operator, such as desktop microphone with PTT and speaker, micro helmets, standing PTT pedal, etc.

For its part, matrix 3 switching incorporates, as mentioned, the interfaces necessary for communication with the different equipment, such as communications recorder 4a, 4b digital fixed telephony, 4c analog fixed telephony, public address 4d, 4e radio, or other 4f equipment.

In accordance with the embodiment provided by the invention, the switching matrix 3 can be of two types:

- A sizeable matrix in a 19 '' rack, to achieve maximum interface sizing, and

- A cost-optimized matrix, with a reduced number of interfaces for dispatch centers, in those that cost is an important parameter to be able to access certain markets

Attending to the schematic representation of system of Figure 1, the possible combinations between operators and communication matrix, can be as follows:

one)

A basic version in which an operator is directly connected to a radio or telephone equipment, without switching matrix. This case will incorporate the communication integration modules and CHALK.

2)

A version in which several operators are connected to the optimized switching matrix. In this case, each operator It will incorporate all the software modules.

3)

A version in which several operators are connected to an array of  resizable switching. Also in this case each operator It will incorporate all the software modules.

Thus, in a system implemented according to the above, a multiplicity of functionalities can be integrated, Among those cited as principal, the following:

- Communication between operators 1 and the matrix 3 IP switching, for both data and voice (VoIP);

- Integration of communications between various Media: TETRA, MPT-1327, telephony and public address. Any communication through any means, will be integrable from the operator post of the Dispatch Center;

- Functions of a switching matrix, such as, for example, conference calls, call forwarding, transfer, retention, or inclusion;

- Passage of data between radio systems and operators, such as caller and caller numbers, identifying data, etc., or any other type of data from remote equipment, via radio;

- Representation on fleet mapping of vehicles, points of interest, alarms and files;

- Flexible software for processing files with their states, affected records, guides online advice, effectiveness statistics, etc;

- Friendly and intuitive user interface, for provide great agility in the usual operations of the operator;

- Possibility of recording conversations maintained through operator positions;

- Possibility of system redundancy and degraded mode operation in case of network failure computing, making call forwarding to extensions predefined;

- The switching matrix, with its interfaces, may operate automatically on systems without an operator, and

- Public address incorporation.

According to a preferred embodiment of the invention, the system can adopt the following configuration:

- Adoption of an appropriate version of Windows as an operating system for operators;

- A maximum dimensioning for the matrix resizable, from:

* Various operators, for example 20;

* Several radio interfaces, for example 20;

* Several ISDN interfaces, for example 10;

* Several analog telephone interfaces, for example 10, and

* One or more PA interfaces, for example 2;

- A dimensioning for the optimizable matrix low cost, of:

* one operator;

* 2 interfaces radio

* 2 interfaces ISDN, and

* 2 interfaces analog telephony;

- Raster or vector mapping;

- A database, such as Oracle and MySQL, Y

- Media, which include:

* TETRA;

* Trunking MPT-1327;

* 5 shades;

* Subtone;

* ISDN and analog telephony, and

* PA system

If you now attend to the representations that  schematically shown in Figures 2 to 4, it can be seen that correspond, respectively, with the possible combinations offered by the system. Thus, in regard to Figure 2, illustrative of the communication between the switching matrix and the server, there are four planes of which, the control plane 5 it is through UDP over IP 6, and where the high level of functions to be performed uses the proprietary protocol 7 MCP (Matrix Control Protocol, or Matrix Control Protocol). The internal network Ethernet is indicated by numeric reference 8.

On the other hand, Figure 3 illustrates the communication between the server and the client, which presents the following Features: The control plane is through TCP-IP 9-6, and the high level of functions to be carried out is done by opening 2 simultaneous channels through the following proprietary protocols:

- XML-CCTBD 10 (Control Center Teltronic Database), and

- XML-CCTC 11 (Control Center Teltronic Control).

Finally, Figure 4 shows the possibility of communication between the switching matrix and the client. This Communication has the following characteristics:

- The audio coding standard is the G711 (law \ mu and 20 second packs of audio to encode);

- Voice plane 6 transmits over IP (VoIP) directly between the parent and the customers, and

- For the control of the packages the RTP and RTCP protocols, illustrated in plane 12.

In the foregoing the system has been described proposed by the invention according to its form of preferred implementation As you can see, the system described presents, in addition to the advantage of not needing wiring auxiliary between the operators and the switching matrix, but only a network of computers without wiring is needed audio auxiliaries, also shows the peculiarity that, using only the client’s own computer network, may allow temporary operators remote For example, in an emergency center, there may be a Crisis room with 4 operators and fixed wiring, but in a moment given it may interest to access from a remote office, to intervene in the Dispatch Center. The system of the invention is allows, since it would enter as one more operator, with all the functionality

It is not considered necessary to make the content of this description for a subject matter expert can understand its scope and the advantages derived from the invention, as well as develop and implement the object of the same.

However, it should be understood that the invention has been described according to a preferred embodiment thereof, so which may be subject to change without implying any alteration of the basis of said invention, being able to affect such modifications to both system components as to the communication protocols used.

Claims (10)

1. Communication system between an operator dispatch center and professional radio systems, with the use of an Ethernet network with voice over IP (VoIP), capable of allowing communication between said operators with a multiplicity of equipment or customers, which characterized in that it comprises: a dispatch center consisting of at least one operator (1) provided with at least one processor or server (2) with at least one monitor, with the corresponding specific software modules, and a switching matrix (3) , provided with an interface for professional radio communication systems, and because the communication between said switching matrix (3) and the professional radio systems is established with the use of a single physical channel consisting of a local, private internal network, Ethernet, allowing voice communication (VoIP) between the different operators, (1) and the radio systems (4e) mentioned; the own control of the switching matrix (3), for the establishment of audio, conference, or other channels; and the passage of data between radio systems and operators, such as caller numbers, calling, identification, or other, or any type of data from remote equipment, via radio. 2. System according to claim 1, characterized in that the professional radio communication systems can be TETRA, MPT-1327, 5 tones and subtone. 3. System according to claim 1, characterized in that the switching matrix (3) is sized for at least twenty operators, at least twenty radio interfaces, at least ten ISDN interfaces, at least 10 analog telephony interfaces and at least A PA interface. System according to claim 3, characterized in that the switching matrix (3) is optimized for one operator, two radio interfaces, 2 ISDN interfaces and two analog telephone interfaces. 5. System according to claim 1, characterized in that the communication between the switching matrix and the server is carried out by means of the control plane is via UDP over IP and for the high level of the functions to be performed the proprietary protocol is used MCP, Matrix Control Protocol. System according to claim 1, characterized in that the communication between the server and the clients is carried out by means of the TCP / IP control plane and for the high level of the functions to be performed, two simultaneous channels controlled by the proprietary XML protocols are used. -CCTBD, Teltronic Database Control Center, and XML-CCTC, Teltronic Control Control Center. System according to claim 1, characterized in that the communication between the switching matrix and the client is carried out by means of the audio coding standard G711, the voice plane is transmitted over IP, VoIP, directly between the switching matrix and the clients and for the control of the packages the protocols RTP and RTCP are used. 8. System according to claim 1, characterized in that each processor has two monitors (2). 9. System according to the preceding claims, characterized in that one of the monitors (2) incorporated in each operator position (1), is intended for the representation on cartography of information such as, for example, vehicle fleets, points of interest, alarms and records. 10. System according to claim 1, characterized in that the switching matrix (3) further includes other interfaces for equipment such as recorder (4a), digital fixed telephony (4b), analog fixed telephony, (4c), public address (4d ), or other equipment (4f).