WO2017141268A1

WO2017141268A1 - Private system for mobile communication (psm) and apparatus therefor

Info

Publication number: WO2017141268A1
Application number: PCT/IN2017/050063
Authority: WO
Inventors: Rajah Vijay Kumar; Meghna MURLIDHARAN
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-02-16
Filing date: 2017-02-15
Publication date: 2017-08-24
Anticipated expiration: 2018-08-16

Abstract

The present invention is a unique wireless communication system that is called the Private System for Mobile Communication or PSM. The PSM system comprises of a PSM Headend hardware, a PSM client and PSM Graphical User Interface. The PSM system is a flexible technology whereby a license free radio band of 2.4 and 5 GHz is used to achieve small area mobile communication with interface and access to terrestrial wired, terrestrial mobile and Satellite based communication. Also, is a first Mobile communication system that uses the mobile equipment itself as a transponder to communicate within the complete network and extend the radio frequency footprint using the Hop-Hop protocol. The PSM system is a completely independent system for communication with a pre-configured group, using their mobile telephone instrument that gets automatically registered with a PSM network.

Description

PRIVATE SYSTEM FOR MOBILE COMMUNICATION (PSM) AND APPARATUS THEREFOR

BACKGROUND OF THE INVENTION

FIELD OF INVENTION The present invention relates to a method and apparatus for providing Private Wireless Mobile Voice and Data Communication using a novel technique called Private System for Mobile Communication (PSM), without the use of public wireless or wired switched networks. PSM is intended to provide seamless wireless intercommunication between private users in a group like an in a disaster management situation, Industrial, Commercial, Hospitals or even Homes. Primary PSM network does not require a Public Switched Telephone Network (PSTN) or a Global System Mobile network to establish communication on a PSM network. The present invention completely eliminates the need for any type of Subscriber Identity Module (SIM) in any commonly used GSM/CDMA Mobile Telephones when it is operated in a PSM network.

DISCUSSION OF PRIOR ART

Currently, there is the Global System for Mobile Communication or GSM network providing public switched wireless mobile networks, commonly called Mobile Phone. GSM networks operate in a number of different carrier frequencies ranges (separated into GSM frequency ranges), and most GSM networks operate in the 900 MHz or 1800 MHz bands. If these bands were already allocated, the 850 MHz and 1900 MHz bands were used instead. In exceptional cases, the 400 and 450 MHz frequency bands are assigned in some countries since they were previously used for first-generation systems. One of the key features of GSM is the use of Subscriber Identity Module, commonly known as a SIM card. The SIM is a detachable electronic device containing the user's subscription information and phone book. This allows the user to retain his or her identity and information while changing the primary communication device. Also, the user can change operators while retaining the primary communication device, by changing the SIM alone. GSM has been the most successful and widely used mobile communication network standard worldwide. Further, most 3G networks of today, operate around the 2100 MHz frequency band. The transmission power in the handset being limited to a maximum of 2 watts in GSM 850/900 and 1 watt in GSM 1800/1900.

"Private GSM", appeared after the deregulation of the Digital Enhanced Cordless Telecommunications (DECT) guard band in some countries, allowing people to reduce their costs without any impact on performance and offering a number of added value services. The capacity to create private mobile GSM networks, facilitated mobile phone users to access the same services and features as users of a PBX (private branch exchange) extension. Digital Enhanced Cordless Telecommunications, also called DECT is a standard primarily used for creating cordless telephone systems. DECT originated in Europe, where it was the universal standard, replacing earlier cordless phone standards, such as 900 MHz CT1 (Cordless Telephony standards 1) and CT2 which forced development of a variation of DECT, called DECT 6.0, using a slightly different frequency range. The technology is nearly identical, but the frequency difference makes the technology incompatible with systems in other areas, even from the same manufacturer. DECT has almost universally replaced other standards in most countries where it is used.

DECT (Digital European Cordless Telecommunications) is used primarily in the home and small office systems but is also available in many private branch exchange (PBX) systems for medium and large businesses. DECT can also be used for purposes other than cordless phones. Voice applications, such as baby monitors and other evesdropping activities. Data applications also exist, but have been eclipsed; nowadays by WiFi, 3G, 4G cellular mobile systems and also competes with both DECT and Wi-Fi for both voice and data. DECT has also claimed to be used in special applications, such as remote controls for industrial applications. These phones use dual SIM phone devices in order to create a symbiosis between users' existing operators and a Private GSM solution. The present invention completely eliminates the need for any kind of Subscriber Identity Module (SIM) in the commonly used Mobile Telephones when operated in a PSM network (this invention).

US 20030139180 Al titled "Private cellular network with a public network interface and a wireless local area network extension" describes a communication system and method for coupling a wireless local area network to a public network to enable communication between user equipment (UE) terminals associated with the WLAN and the public network. The public network can include a GSM and/or a 3G-network. The WLAN can include a HiperLAN, HiperMAN, or 802.11 network. Preferably, the communication is voice communication, and the system is configured to enable the UEs to access supplementary services provided by the public network. Subscriber and security information for the UEs can be provided to the public network from a SIM associated with each UE, or from an identity module comprising either a private memory with information stored therein or a card holder/reader holding cards with subscriber and security information for one or more UEs. Optionally, the system further includes a private cellular network the WLAN also enables communication between the UEs and the private cellular network.

US 20130040639 Al titled "System to provide GSM over distributed mobile networks" describes a system that provides GSM service over distributed mobile networks. A Network Area Controller (NAC) allows Global Titles (GT) and Mobile Station Roaming Numbers (MSRN) of the GSM network to be shared within a private GSM network. A processor within the Mobile Switching Center (MSC) of a mobile network transcodes voice data and maps the data to the proper bearer QoS to allow the use of Mobile Satellite Services (MSS) such as Iridium and Inmarsat. This invention relates generally to a private network within the Global System for Mobile Communications (GSM) network. More particularly, this invention relates to a GSM private network that provides communication over distributed mobile networks.

US 8732317 B2 titled "System and method for connecting a mobile device to a global network using a virtual private network connection" describes a virtual private network connection that is established from a mobile device to a virtual private network server of a service provider associated with a mobile device responsive to a request for access to the remotely located content provider. Second connection is established, under control of the virtual private network server, from the virtual private network server of the service provider to the remotely located content provider server. Third connection is established, under the control of the virtual private network server, from the virtual private network server of the service provider to an advertising server. The virtual private network connection, the second connection, and the third connection are maintained under the control of the virtual private network server to enable transport of content data between the mobile device and the remotely located content provider server and to enable transport of advertising data between the mobile device and the advertising server.

US 6445920 Bl titled "Virtual private network for mobile subscribers" describes a virtual private network (VN) within a given mobile-radio network (MRN), a facility, is proposed which is connected to the base stations (BS) and controls the establishment and release of calls between mobile subscribers (MSI . . . MSX) assigned to the coverage area of the base stations, and a data base (HLR) connected to the facility, which contains a subscriber data set (DS) for each of said mobile subscribers with a first logic data set (LDS) for registering them as subscribers of the mobile radio network. Each of some of these mobile subscribers (MSI, MS2, MS3) has a second logic data set (LDS-VN) for registering them as subscribers of a virtual private network. In this way, in addition to the data set (LDS) allowing access to the mobile-radio network (MRN) as such, the invention adds to the subscriber data set in the existing data base (HLR or Home Location Register) a further data set (LDS-VN), which enables a mobile subscriber to access a virtual private network (VPN). Essentially this only requires taking steps in the mobile-radio software area, whereby the installation of one or several virtual private networks can be very easily accomplished. The implementation of an intelligent network which is superimposed on the mobile-radio network can be omitted. The described mobile-radio network is structured according to the GSM standards and contains, at least, one radio cell and a device for establishing and releasing calls between two mobile subscribers and a fixed network subscriber. So-called virtual private networks can be installed in the mobile-radio network described therein, by forming groups in which different mobile subscribers are logically assigned to each other. Mobile subscribers have to access the private branch exchange by dialing a four-digit number to make cost-effective calls within their group under the private branch exchange, meaning within their virtual private network.

The present invention is different from the cited prior art above. The present invention is a completely independent system for communication with a pre- configured group, using their mobile telephone instrument that gets automatically registered with a PSM network. Considering the typical example of an industrial complex, where there are 10,000 people working. Here, the 10,000 people will be connected together with the help of their own mobile phones. Every day as they arrive at their office they will automatically get registered to the PSM network of their office. The network facilitates calling each other by dialing an internal number, or make calls through the PSTN line, or use their GSM network as usual or even setup conference calls between employees, transmit data, video among themselves. SUMMARY OF THE INVENTION

A Private System for Mobile Communication (PSM) is a fully integrated plug and play, a pre-configured private network of in group communicators. The PSM system comprises of a PSM Headend hardware, a PSM client and PSM Graphical User Interface. The PSM Headend hardware has inbuilt transponders and scalable gateways for varied applications. The PSM client is for subscribed users or participants. The PSM Graphical User Interface facilitates a simple click solution to control, configure and implement the PSM Network.

The PSM base station has a modular design that comes with an expandable traditional PSTN gateway up to 128 physical telephone channels and a high power transponder and a broadband interface that also facilitates the same network to be used as broadband internet connection over PSM network. The PSM base station has a multi-mounting capability to integrate different gateways to address different pain-points in telephony. The PSM base station in sync with the PSM client acts as the access server that initiates and terminates the terrestrial phone lines and translates the call over the 2.4 and 5 GHz wireless protocol to the PSM client. 2.4 and 5 GHz radio bands are license free bands.

The graphical user interface that controls the PSM Headend, is packed with unlimited flexibility like configuring custom dial plans by which outgoing calls are restricted only to planned destinations to voice recordings, call forwarding, routing, besides controlling the complete network operations including the PSM Headend, corresponding transponders, and repeaters in the network, besides the management of PSM client.

The PSM Client is installed in the Android/iOS subscribed Smartphones, offers the possibility of solutions offered by the regular EPABX/ISDN/PSTN system without a need for separate physical phone or telephone lines. The entire connected PSM clients who are subscribed users/participants can share the same telephone line over the Local Access and Transport Protocol (LATP), which gets much cheaper than providing PSTN lines at all locations. This brings down the expenses drastically because; minimally there is just one contract and one hardware, and connected to a single Internet Service Provider.

The PSM system uses Hop-Hop protocol (HHP) for communication where each of the communication device carried by the user acts as communication port carrying information about all other communication devices connected to the PSM network and routing table to achieve the fastest way to any communication device on the network. All communication device(s) or conventional mobile phones have inbuilt-memory and computing capabilities to run the hop-hop protocol so that all devices can dynamically in real time update the fastest route to all other devices on the network. The hop-hop protocol makes all communication device in the network to act as a sub-base- stations or intermittent transponders enabling the nearby communication device to establish a connection without a need to connect to the actual "Headend base station" over time.

In a traditional communication system, the more the number of communication devices that are connected to a communication hub, or a transmission tower, the weaker the network performance is, that may lead to more number of call drops, and poor voice quality. In PSM system that uses the Hop-Hop protocol, with more the number of communicative devices connected, the more the routes established to other nearby devices. This can lead to better utilization of the network bandwidth and expand the network coverage area with a lesser number of hubs or towers. Also, a common cell tower decides on the range of communication. The farther the range, the weaker a signal goes whereas, in the PSM system that uses the Hop-Hop protocol, each communication device in the network acts as a signal extender, so the possibility of communication range is extended drastically. The physical trunk of 1000+ numbers which have been very expensive currently will now be made available by the PSM system at a much lesser cost and minimal hardware dependencies. The single exchange provided by PSTN service provider to draw more than 10000 Local Access and Transport Channel (LATC) becomes possible at absolutely no additional hardware cost. After the first time installation and creation of the account in a Smartphone, the PSM client attempts to calibrate and remove the echo from the transmitted audio signal depending on the hardware configuration of each Smartphone, with a specially designed method. The PSM client checks for the signals that reappear and, subtracts and gets successfully registered to the PSM Headend. The registered PSM client always runs in the background of the Smartphone, ready to securely receive or transmit the data (audio, video, message) packets over the PSM network. The voice communication is also transmitted and received by the inbuilt transponder in the PSM Headend which is used to register and route requests to the user's locations, invite another user(s), and make specific requests to connect these endpoints.

The signals picked by the PSM Headend is transported over the wireless encrypted packet switched PSM network with a high quality codec and a bandwidth of 60-120 kbits/sec, with a Minimum Opinion Score (MOS, a test that has been used for decades in telephony networks to obtain the human user's view of the quality of the network performance.) of 4, better than the regular GSM bandwidth of 60-90 kbps that comes with an MOS score of 3 to the various transponders repeaters strategically placed over the region and in turn to the destination users. In a PSM network, the each mobile client which is a mobile phone in the network can additionally function as routing transponders, so that they act as dynamic repeaters and help extend the network coverage area while also helping users to make calls as they are already in the network.

The pre-assigned extensions to the subscribed users' list can utilize all the facilities of the PSM system including making secure, hassle-free calls among peers within the network and outside.

The system is very flexible and robust when it comes to providing any number of voice channels, with the transponders that are strategically placed at different locations striving to achieve the desired coverage within the network area. The community that uses the PSM network is also able to change locations with just moving the PSM Headend and the PSM transponders and repeaters to any other desired location.

The PSM system also provides an option to connect normal landlines to its main Headend base station thereby enabling routing of the calls from PSM network to landlines too. Thus, provides an opportunity to revive the landline usage which is currently used for address proof purpose in most cases. Also, PSM is not just a collection or rearrangement of components to work together, but most hardware is specifically designed for the purpose. An autonomous Private System for Mobile communication (PSM), within a pre- configured group, using their own mobile telephone instrument that gets automatically registered with PSM network having, a PSM Headend hardware, a PSM base station in sync with a PSM client, and a PSM Graphical User Interface. The PSM system is a fully integrated plug and play, pre-configured private network of in group communicators. The PSM Headend hardware has inbuilt transponders and scalable gateways for varied applications. The PSM client is for subscribed users or participants. The PSM Graphical User Interface configured to control, configure and implement the PSM Networks. The PSM Graphical User Interface is placed in the PSM Headend. The PSM base station has a modular design that comes with an expandable traditional PSTN gateway up to 128 physical telephone channels and a high power transponder and a broadband interface, that also facilitates the same network to be used as broadband internet connection over the PSM networks. The base station has a multi-mounting capability to integrate different gateways to address different pain-points in telephony. The PSM base station in sync with the PSM client acts as an access server that initiates and terminates the terrestrial phone lines and translates the call over the 2.4 and 5 GHz wireless protocol to the PSM client. 2.4 and 5 GHz radio bands are license free bands. The graphical user interface is packed with unlimited flexibility like configuring custom dial plans by which outgoing calls are restricted only to planned destinations to voice recordings, call forwarding, routing, besides controlling the complete network operations including the PSM Headend, corresponding transponders, and repeaters in the network, besides the management of PSM client and also controls the PSM Headend. The PSM Client is installed in the Android/iOS subscribed Smartphones, facilitates the possibility of solutions offered by the regular EPABX/ISDN/PSTN system without the need for a separate physical phone or telephone lines. All the connected PSM clients who are subscribed users/participants can share the same telephone line over the Local Access and Transport Protocol (LATP), provides economical solution than PSTN lines as involves minimally one contract and one hardware and connected to a single Internet Service Provider. The PSM is flexible and robust to provide any number of voice channels, with the transponders that are strategically placed at different locations striving to achieve the desired coverage within the network area.

In this invention, a link between the PSM Headend and telephony endpoint is through a PSM Local Access and Transport Channel (LATC). Media transfer within LATCs is facilitated by LATC bridging and for an uninterrupted interaction between the PSM Headend and transponders when a user moves away from a connected transponder, a new communication path is established between the mobile unit and a PSM wireless network after verifying user authentication. A dynamic PSM network is established during disaster management by fixing the PSM Headend in moving vehicle and wearing of the mobile transponder by a select group of users. Subscribers of affiliate networks can communicate with the same comfort of communicating in their home network through a PSM Affiliate network in which two or more affiliate PSM networks are connected. PSM Hop- Hop Protocol ensures strong signal from transponders in a network by enabling one or more registered mobile devices to act as a transponder to extend immediate coverage area of the PSM network while retaining the primary function of the mobile equipment. A PSM Headend (PSMH) apparatus for use in an autonomous private system for Mobile communication (PSM), consisting of, a PSM processor, Flash Memory, a Power Supply, a hard disk, a hard disk mounting bracket, a Wireless Transceiver, a Radio Antenna, an Analog PSTN interface, a top cover, a bottom cover, a Digital GSM Interface, and associated RF shielding and interference suppression system. The Flash Memory is for system software. The hard disk (13) is for data logging. The PSMH also hosts system software for seamless performance of all functions of verification, authentication, call routing, encryption, gateway management, error handling, security functions, etc., of the entire network. BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 shows the block diagram of the entire PSM network.

Figure 2a shows the block diagram of PSM Headend Local Access and Transport Channel (LATC).

Figure 2b shows the block diagram of PSM LATC Bridging. Figure 2c shows the interaction between the PSM Headend and PSM Transponders in a PSTN network.

Figure 2d shows the block diagram of a Dynamic PSM network.

Figure 2e shows the block diagram of the PSM Hop-Hop protocol (HHP)

Figure 2f shows the Affiliate Networks Interaction. Figure 3 and 3a shows the hardware of the PSM Headend.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The goal for the PSM network shown in Figure 1, is to primarily perform every function and more like the GSM network telephony. Through pursuing this goal, PSM has to support a long list of technologies effective in initiating, transmitting and receiving phone calls, send and receive digital and analog data and this includes both analog and digital connectivity to the traditional telephone network, or the PSTN (Public Switched Telephone Network) (8), existing technologies like the GSM (7) and CDMA.

To achieve these goals, a PSM network telephony platform consists of the following: PSM Headend (2) and its sub-components (PSMH): PSMH includes physical hardware as shown in Figures 3 and 3a consisting of a PSM processor (18), Flash Memory (23) for system software, Power Supply (14), hard disk (13) for data logging, Wireless Transceiver (15), hard disk mounting bracket (22), Radio Antenna (16), Analog PSTN interface (17), top cover (19), bottom cover (21), Digital GSM Interface , and the associated RF shielding and interference suppression system (20). PSMH also hosts the system software for seamless performance of all functions of verification, authentication, call routing, encryption, gateway management, error handling, security functions, etc., of the entire network. Mobile Station Subsystem (MSS) and its components: The MSS consists of the physical equipment(s) used by a PSM subscriber to connect to the network. It comprises the Mobile Equipment (ME) (1) such as an Android, Windows or iOS Operating System (OS) based Smartphone and the Subscriber Identity Credentials (extension and password). The Mobile Equipment can additionally function as Low Power Transponders (LPT) in the PSM network using the Hop-Hop Protocol (HHP), thus signals originating from one phone will hop from one nearby third- party phone to the other and reach the nearest repeaters (5) and transponder (6) and then to the PSM Headend. Use of HHP to close a network of communicators is unique to the PSM network, which has tremendous application in the modern world, suffering from acute bandwidth starvation.

The Network Transport Pipeline (NTP) and its components: The NTP combines the call routing transponders (6) and the low power transponders/mobile equipment (4) in a given PSM network, which tracks registered subscribers of the PSM network, identifies them and when a call is originated from them it is passed on to the PSM Headend (2) for further processing. The NTP will also recognize an affiliate PSM network subscriber within its network and sends the credentials to its own PSM Headend. Low Power Transponders (LPT's) are part of the NTP when in HHP mode and will be part of MSS otherwise. Figures 2a to 2f illustrates the various examples the PSM network could be used.

PSM Local Access and Transport Channel (LATC): An LATC (3) in PSM represents a link between the PSM Headend (2) as shown in Figure 2a and some telephony endpoint like the mobile equipment (1). The most common example is when a phone makes a call into a PSM system. This connection is represented by a single LATC (3) and is the most basic link in a PSM network.

PSM LATC Bridging: Perhaps a more familiar call scenario would be a connection between two phones as in Figure 2b, where a person using a mobile equipment (1) "phone A" has called a person on another mobile equipment (1) "phone B". In this call scenario, there are two telephony endpoints connected to the PSM Headend (2), so two LATC (3) exist for this call.

When PSM channels are connected as mentioned above, it is referred to as an LATC bridge. LATC bridging is the act of connecting number of LATC's together for the purpose of passing media between them. The media stream is most commonly an audio stream, but it can also be digital data not amounting to speech and, there may also be a video or a text stream in the call. Even in the case where there is more than one media stream (such as both audio and video), it is still handled by a single LATC (3) for each end of the call in PSM. In Figure 2b, where there are two channels for phones A and B, the bridge is responsible for passing the media coming from phone A to phone B. Similarly, for passing the media coming from phone B to phone A, all media streams are negotiated through the PSM Headend processor. If the PSM Headend processor does not understand anything and have full control over is not allowed. This means that a typical PSM Headend processor can do recording, audio manipulation, and translation between different technologies and platforms. Communication within the PSM code during a call is done by using LATC Frames (L-Frames). L-Frames can either be media L-Frames or signaling L- Frames. During a basic phone call, a stream of media L-Frames containing audio would be passing through the network. Signaling L-frames are used to send messages about call signaling events, such as a digit being pressed, a call being put on hold, or a call being hung up.

Interaction between PSM Headend (2) and Transponders (Figure 2c)

In order for mobile equipment (1) such as a mobile phone subscribing to PSM network, say, Phone 'A' to communicate with a PSM network several links must be established. These links include Radio Frequency (RF) link between the mobile equipment Phone A and a strongest transponder in the vicinity, such as a Transponder- 'A' (6), and a wireless link between Transponder-A and the PSM wireless network, a wired or wireless link between PSM wireless network and the PSM Headend (2). A wireless link weakens when a user moves far from a connected transponder and will eventually become too weak to support communications between the transponder and the mobile unit. As a result, the call in progress eventually disconnects or is dropped. Clearly, this is not acceptable. To avoid this issue, when the mobile unit Phone A crosses a zone and is near to an another transponder which is emitting a stronger signal, a new communications path between the mobile unit PSM Phone A and the PSM Wireless network is established. Somewhere in the PSM wireless network, there exists a Phone 'B' that Phone 'A' wants to contact when one of the transponders (6) nearest to Phone 'B' will pick up the request from the PSM Headend (2) and pass on the call to Phone 'B'. The PSM Headend (2) verifies Phone 'A' first to see if it is a valid subscriber/member of the network and allots an LATC and puts phone 'A' on wait. Next, the PSM Headend (2) verifies if phone 'B' is a valid subscriber/ member of the network and allots another LATC and puts Phone 'B' also on wait. The PSM Headend (2) then checks for communication credentials of both phones (like if Phone 'A' is allowed to communicate to Phone 'B' etc.) and releases both phones and their LATCs into the PSM wireless network.

Dynamic PSM Network (Network in motion)

In a Dynamic PSM Network (Figure 2d) the PSM Headend (2) can be fixed in a moving vehicle, and a select group of PSM users can wear a moving transponder (12). This would make a PSM wireless network fully in motion when the Headend, transponder, and the subscribers move, the PSM network also moves. Such a kind of network becomes very useful in places like disaster management or in a situation where all other mobile networks have to be switched off for security reasons.

PSM Hop-Hop Protocol

PSM Hop-Hop Protocol is unique to this invention (Figure 2e). All mobile equipment are not the same, their reception and transmission characteristics vary; sometimes, a mobile unit (1) such a PSM Phone 'B' can act additionally as a Low Power Transponder (LPT) in a PSM wireless network area in which a High Power Transponder already exists. As a result, one or more transponders (6) can be "co- located". In such a case, there may be situations in which it would be advantageous for PSM Phone 'C to connect to the LPT of Phone 'B' . For example, there me be boundary areas an active transponder, where the signal from that transponder is too weak for Phone 'C to connect. In such situation Phone 'B' extends the range of active transponder and consequently Phone 'C can still connect to PSM wireless network via the LPT of Phone 'Β'. Interestingly in a PSM network, any mobile device or group of mobile devices can be used to register to the network as a secondary device functionality as an LPT to extend the immediate coverage area of the PSM network, still retaining its primary function as a mobile communication equipment such as a mobile phone. PSM Affiliate Networks

A PSM Affiliate network (Figure 2f) is a concept under the integrated PSM network, where two PSM network can be connected by external leased trunks. The goal is to ensure that two or more affiliate PSM networks (10,11) can connect together, and subscribers in these two networks can communicate together as if they are in a single network. The subscribers of affiliate networks can freely use any of the affiliate networks as if they are communicating on their home network.

Partial list of functionalities of PSM network

Most functionalities of GSM, PBX, EPABX or PSTN are also available with the PSM network. Some of them are listed below:

Call Forwarding: Redirects all incoming calls towards another extension Call Monitoring: Call monitoring involves a supervisor tapping into a phone transaction between an agent and a caller

Call Transfer: Hand a call off to another extension

Call Waiting: Receive a tone indicating another call is waiting for attention

Calling-ID: Identify caller's phone number or phone number

Conference Call: Allow 3 or more parties to connect together

Follow Me: have calls automatically transferred elsewhere

Forward on Busy/No Answer transfer if line is in use or doesn't answer

Hold: Puts a call on hold until you can return to it. While a call is on hold, you can place another call, activate another feature, answer a waiting call, or leave the telephone to perform another task. Use when you have a call you do not wish to drop, but which you have to interrupt briefly to do something else.

Call Logs: Displays records of the user's most recent incoming, missed, and outgoing calls and allows the user to click-to-dial any number on the logs.

Claims

An autonomous Private System for Mobile communication (PSM), within a pre-configured group, using their own mobile telephone instrument that gets automatically registered with PSM network having (a) a PSM Headend hardware (2), (b) a PSM base station in sync with a PSM client, and (c) a PSM Graphical User Interface, wherein:

(i) The PSM system is a fully integrated plug and play, pre-configured private network of in group communicators;

(ii) The PSM Headend (2) hardware has inbuilt transponders (4) and scalable gateways for varied applications;

(iii) The PSM client is for subscribed users or participants;

(iv) The PSM Graphical User Interface configured to control, configure and implement the PSM Networks; and

(v) The PSM base station has a modular design that comes with an expandable traditional PSTN (8) gateway up to 128 physical telephone channels and a high power transponder and a broadband interface, that also facilitates the same network to be used as broadband internet connection over the PSM networks.

The autonomous Private System for Mobile communication (PSM) of Claim 1, wherein the base station has a multi-mounting capability to integrate different gateways to address different pain-points in telephony.

The autonomous Private System for Mobile communication (PSM) of Claim 1, the PSM base station in sync with the PSM client acts as an access server that initiates and terminates the terrestrial phone lines and translates the call over the 2.4 and 5 GHz wireless protocol to the PSM client. 2.4 and 5 GHz radio bands are license free bands. The autonomous Private System for Mobile communication (PSM) of Claim 1, wherein graphical user interface is packed with unlimited flexibility like configuring custom dial plans by which outgoing calls are restricted only to planned destinations to voice recordings, call forwarding, routing, besides controlling the complete network operations including the PSM Headend, corresponding transponders (6), and repeaters (5) in the network, besides the management of PSM client and also controls the PSM Headend.

The autonomous Private System for Mobile communication (PSM) of Claim 1, wherein the PSM Client is installed in the Android/iOS subscribed Smartphones, facilitates the possibility of solutions offered by the regular EPABX/ISDN/PSTN system without the need for a separate physical phone or telephone lines (9).

The autonomous Private System for Mobile communication (PSM) of Claim 1, wherein all the connected PSM clients who are subscribed users/participants can share the same telephone line over the Local Access and Transport Protocol (LATP), provides economical solution than PSTN lines as involves minimally one contract and one hardware and connected to a single Internet Service Provider.

The autonomous Private System for Mobile communication (PSM) of Claim 1, is flexible and robust to provide any number of voice channels, with the transponders that are strategically placed at different locations striving to achieve the desired coverage within the network area.

The autonomous Private System for Mobile communication (PSM) of Claim 1, wherein a link between the PSM Headend (2) and telephony endpoint is through a PSM Local Access and Transport Channel (LATC) (3).

9. The autonomous Private System for Mobile communication (PSM) of Claim 1, wherein media transfer within LATCs is facilitated by LATC bridging.

10. The autonomous Private System for Mobile communication (PSM) of Claim 1, wherein for an uninterrupted interaction between the PSM Headend (2) and transponders when a user moves away from a connected transponder, a new communication path is established between the mobile unit (1) and a PSM wireless network after verifying user authentication.

11. The autonomous Private System for Mobile communication (PSM) of Claim 1, wherein a dynamic PSM network is established during disaster management by fixing the PSM Headend (2) in moving vehicle and wearing of the mobile transponder (12) by a select group of users.

12. The autonomous Private System for Mobile communication (PSM) of Claim 1, wherein subscribers of affiliate networks can communicate with the same comfort of communicating in their home network through a PSM Affiliate network in which two or more affiliate PSM networks (10,11) are connected.

13. The autonomous Private System for Mobile communication (PSM) of Claim 1, wherein PSM Hop-Hop Protocol ensures strong signal from transponders in a network by enabling one or more registered mobile devicesto act as a transponder to extend immediate coverage area of the PSM network while retaining the primary function of the mobile equipment.

14. A PSM Headend (PSMH) apparatus for use in an autonomous private system for Mobile communication (PSM), consisting of (1) a PSM processor (18), (2) Flash Memory (23), (3) a Power Supply (14), (4) a hard disk (13), (5) a hard disk mounting bracket (22), (6) a Wireless Transceiver (15), (7) a Radio Antenna (16), (8) an Analog PSTN interface (17), (9) a top cover (19), (10) a bottom cover (21), (11) a Digital GSM Interface (19), and (12) associated RF shielding and interference suppression system (20), wherein:

(i) The Flash Memory (23) is for system software;

(ii) The hard disk (13) is for data logging; and

(iii) The PSMH also hosts system software for seamless performance of all functions of verification, authentication, call routing, encryption, gateway management, error handling, security functions, etc., of the entire network.