WO2008095123A2 - Commutateur passerelle pour les communications hybrides filaires et sans fil - Google Patents

Commutateur passerelle pour les communications hybrides filaires et sans fil Download PDF

Info

Publication number
WO2008095123A2
WO2008095123A2 PCT/US2008/052695 US2008052695W WO2008095123A2 WO 2008095123 A2 WO2008095123 A2 WO 2008095123A2 US 2008052695 W US2008052695 W US 2008052695W WO 2008095123 A2 WO2008095123 A2 WO 2008095123A2
Authority
WO
WIPO (PCT)
Prior art keywords
module
network
wifi
wimax
voice
Prior art date
Application number
PCT/US2008/052695
Other languages
English (en)
Other versions
WO2008095123A3 (fr
Inventor
John Z. Yu
David Hsiongwei Hsu
Henry Zili Zhang
Original Assignee
Advanced Technologies Holdings, Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Advanced Technologies Holdings, Llc filed Critical Advanced Technologies Holdings, Llc
Publication of WO2008095123A2 publication Critical patent/WO2008095123A2/fr
Publication of WO2008095123A3 publication Critical patent/WO2008095123A3/fr
Priority to US12/534,073 priority Critical patent/US20100085948A1/en
Priority to US12/534,065 priority patent/US20100085916A1/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/66Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Definitions

  • This invention generally relates to a gateway switch for hybrid wired and wireless communications. Description of the Background
  • the Internet has emerged as the backbone of voice and data (video, audio and text) telecommunications both fixed lines and increasingly wireless mobile and the rapidly evolving delivery of innovative services and business models.
  • voice and data video, audio and text
  • traditional business and services including communications and commerce, have been migrating over the Internet.
  • a longstanding challenge remains - Internet access or the "last mile" problem.
  • Internet access via fixed-lines e.g., ADSL, Cable, and dedicated lines
  • wireless devices has become the battlefield at the center stage. It is widely believed that whoever owns a so-called universal wireless access network for ubiquitous wireless access integrating with existing wired networking infrastructure will likely become the dominant player in the new era of Internet.
  • a universal gateway switch is desired to access different types of services over different networks such as mobile cellular wireless, PSTN, Cable, WiFi/WiMax wireless, and Internet, to enable the service access and service interworking among the above-mentioned networks, and to facilitate the convergence of different services over different networks toward the Internet.
  • networks such as mobile cellular wireless, PSTN, Cable, WiFi/WiMax wireless, and Internet
  • the present invention provides a gateway switch system for wired and wireless communication.
  • the gateway switch is typically deployed at a service subscriber's site (home or office) to enable services provided by the gateway switch, hence the deployment of the gateway switches is dependent of service subscribers and whereabouts of the service subscribers.
  • the system comprises (a) a set of transmitting devices, (b) a service switching and control device, and (c) a set of receiving devices.
  • the set of transmitting devices are capable of transmitting voice or data signal over a wired or wireless network.
  • the set of receiving devices are capable of receiving voice or data signal from a wired or wireless network.
  • the service switching and control device is capable of receiving the incoming voice or data signal from the set of receiving devices, and then processing and converting the signal to appropriate formats with certain designated identifiers and sending to a specific transmitting device according to service specific rules for forwarding to a specific wired or wireless network.
  • the transmitting or receiving devices comprise a Cellular Mobile module, a Local Area Networks (LAN) module, a Wireless Local Area Networks (WLAN) module (e.g., WiFi/WiMax), a Cable modem module, and a landline PSTN module,
  • the user specific rule can comprise forwarding rules based on a wireless voice service plan of a user.
  • the service specific rule can comprise forwarding rules based on a voice or data service plan to establish the connection (traditional or VOIP) over the PSTN network, the Cable network, the Internet, the Cellular network, or the WiFi/WiMax mesh wireless network.
  • the identifier comprises a landline phone number, a wireless phone number, an IP address, a VOIP account ID, or a combination thereof.
  • the present invention provides a method of communication.
  • the method comprises (a) receiving a data or voice signal from a transmitting device, (b) designing an identifier to the voice or data signal, and (c) forwarding the voice or data signal to a receiving device according to a user specific rule.
  • the present invention provides a service enabling point to the existing networks of Mobile, Internet, Cable, PSTN, and public wireless.
  • the present invention also serves effectively a distributed network demarcation point among these existing networks.
  • the present invention enables voice services (such as VOIP for mobile and landline phones), value-added network services (such as peer-to-peer content distribution, distributed grid computing for network utility services), and home- networking services (such as household consumer electronic device control, management, and security surveillance).
  • voice services such as VOIP for mobile and landline phones
  • value-added network services such as peer-to-peer content distribution, distributed grid computing for network utility services
  • home- networking services such as household consumer electronic device control, management, and security surveillance.
  • the present invention provides a method of communication using the system described herein.
  • BRIEF DESCRIPTION OF DRAWINGS Figure 1 shows an embodiment of the general network diagram for the present gateway communication system.
  • FIG. 2 shows an embodiment of the general architecture scheme of the present gateway communication system.
  • Figure 3 shows an embodiment of the general architecture of a mobile handset working with the gateway communication system.
  • Figure 4 shows an embodiment of the service architecture for service deployment enabled by the gateway communication system.
  • the present invention provides a gateway switch system for wired and wireless communication.
  • the gateway switch is typically deployed at a service subscriber's site (home or office) to enable services provided by the gateway switch, hence the deployment of the gateway switches is dependent of service subscribers and whereabouts of the service subscribers.
  • the system comprises (a) a set of transmitting devices, (b) a service switching and control device, and (c) a set of receiving devices.
  • the set of transmitting devices are capable of transmitting voice or data signal over a wired or wireless network.
  • the set of receiving devices are capable of receiving voice or data signal from a wired or wireless network.
  • the service switching and control device is capable of receiving the incoming voice or data signal from the set of receiving devices, and then processing and converting the signal to appropriate formats with certain designated identifiers and sending to a specific transmitting device according to service specific rules for forwarding to a specific wired or wireless network.
  • the transmitting or receiving devices comprise a Cellular Mobile module, a Local Area Networks (LAN) module, a Wireless Local Area Networks (WLAN) module, a Cable modem module, and a landline PSTN module.
  • the user specific rule can comprise forwarding rules based on a wireless voice service plan of a user.
  • the service specific rule can comprise forwarding rules based on a mobile voice or data service plan of a user.
  • the service specific rule can comprise forwarding rules based on a landline telephone voice or data service plan of a user. In some embodiments, the service specific rule can comprise forwarding rules based on an Internet voice or data service plan of a user. In some embodiments, the identifier comprises a landline phone number, a wireless phone number, an IP address, a VOIP account ID, or a combination thereof.
  • the present invention provides a method of communication.
  • the method comprises (a) receiving a data or voice signal from a transmitting device, (b) designing an identifier to the voice or data signal, and (c) forwarding the voice or data signal to a receiving device according to a user specific rule.
  • the present invention provides a service enabling point to the existing networks of Mobile, Internet, Cable, PSTN, and public wireless (WiFi/WiMax).
  • the present invention also serves effectively a distributed network demarcation point among these existing networks.
  • the present invention enables voice services (such as VOIP for mobile and landline phones), value-added network services (such as peer-to-peer content distribution, distributed grid computing for network utility services), and home- networking services (such as household consumer electronic device control, management, and security surveillance).
  • voice services such as VOIP for mobile and landline phones
  • value-added network services such as peer-to-peer content distribution, distributed grid computing for network utility services
  • home- networking services such as household consumer electronic device control, management, and security surveillance.
  • the present invention provides a method of communication using the system described herein.
  • a communication system including a gateway switch described herein can be used to enable the following mobile and landline VOIP services and data services as described below.
  • gateway switch is sometimes referred to as, and can be used interchangeably with, “gateway communication switch,” “gateway communications switch,” or “service switching and control device.”
  • the communication system can allow unlimited anytime domestic mobile services with a competitive monthly plan.
  • the gateway switch can allow an ultra-low rate for mobile international calls.
  • the term ultra-low rate refers to a rate that can be 0 cent USD to about 100 cents USD per minute, depending on the country of the recipient.
  • the rate can be about 1 cent, 2 cents, 3 cents, 4 cents, 5 cents, 6 cents, 7 cents, 8 cents, 9 cents, 10 cents, about 15 cents, about 20 cents, about 30 cents, about 40 cents, about 50 cents, about 60 cents, about 70 cents, about 80 cents, or about 90 cents per minute of calling time.
  • a communication system including the gateway switch described herein can allow universal mobile communication without roaming, regardless it is domestic or international.
  • a communication system including the gateway switch described herein can allow unlimited anytime domestic landline phone service with a competitive monthly plan.
  • competitive monthly plan refers to a plan that provides a landline phone service at a monthly charge that is comparable with or substantially lower than that is available to a consumer in the market place. Substantially lower refers to about 10%, about 20%, about 30%, about 50%, about 60%, about 70%, about 80%, about 90%, about 95%, or about 99% lower than that is available consumer in the market place.
  • the communication system including a gateway switch described herein allows one to provide value-added network services.
  • value-added network service includes, for example, peer-to-peer IP services that can include voice, data, video content distribution or location-based services that can include commerce, advertising, education, etc.
  • the communication system including a gateway switch described herein allows one to provide network utility services.
  • network utility service can include, e.g., grid supercomputing (commercial, scientific).
  • the communication system including a gateway switch described herein can allow one to provide home-networking services such as household consumer electronic device control, management, security surveillance, and the likes.
  • Figure 1 shows the network diagram of the gateway communication switch.
  • a gateway communications switch referred to as "RizoNode,” is a gateway switch connecting to Internet, mobile network (such as GSM, CDMA, CDMA2000, WCDMA, TD-SCDMA, 4G-mobile), public wireless (such as WiFi, WiMax, etc.), Cable, and PSTN to access these networks and switching traffic between these networks.
  • mobile network such as GSM, CDMA, CDMA2000, WCDMA, TD-SCDMA, 4G-mobile
  • public wireless such as WiFi, WiMax, etc.
  • Cable and PSTN to access these networks and switching traffic between these networks.
  • Some functions of a RizoNode can include connecting to above-mentioned different networks such to allow a mobile handset (such as a mobile phone, PDA, handheld computer, iPod, etc.), a landline phone, or a PC to access the services from the networks.
  • a mobile handset such as a mobile phone, PDA, handheld computer, iPod, etc.
  • a landline phone such as a mobile phone, PDA, handheld computer, iPod, etc.
  • a PC such as a mobile phone, PDA, handheld computer, iPod, etc.
  • Some other functions of a RizoNode can include switching between these different networks for service interworking.
  • Such switching can include, e.g., switching from Mobile network to PSTN, from WiFi/WiMax network to PSTN, from Mobile network to Cable, from WiFi/WiMax network to Cable, from Mobile network to Internet, from WiFi/WiMax network to Internet, and data path switching/interworking such as connection termination, encapsulation and initiation, and control path signaling/interworking such as address translation, connection path calculation and connection status maintenance.
  • This makes a RizoNode effectively a distributed network demarcation point among these existing networks.
  • a network demarcation point is typically centralized and established between two or more networks by peered service providers under certain network peering agreements to enable end-to-end services across different networks managed by different service providers.
  • the gateway switch RizoNode located at a subscriber's site provides a distributed network demarcation point for network and service interworking pertaining to the services enabled at the subscriber's site.
  • Some further functions of a RizoNode can include, e.g., connecting to other RizoNode through WiFi/WiMax connections or Internet IP tunnels to form an Ad-Hoc mesh network, which can additionally include, e.g., authentication/security, signaling, and routing to form a self-contained universal access network of RizoNodes.
  • Figure 2 shows the system architecture of the gateway communications switch in some embodiments, hi some embodiments, the gateway switch can include any or all the following modules and interfaces connecting to different networks: (a) a Cellular Mobile Module, which can a) be used to receive and transmit cellular mobile signals; b) operate on any of the following cellular mobile standards: GSM/GPRS (850MHz/900Mhz/1800MHz/1900MHz), CDMA, CDMA2000, WCDMA, and TD- SCDMA; c) provide both digital (PCM) and analog voice interface with analog voice output interface including handset, headset and alerting; and/or d) provide RS232 and USB control interfaces for interconnecting other modules. This provides an interface to connect to cellular mobile networks;
  • a Cellular Mobile Module which can a) be used to receive and transmit cellular mobile signals
  • b) operate on any of the following cellular mobile standards: GSM/GPRS (850MHz/900Mhz/1800MHz/1900MHz), CDMA, CDMA2000, WCDMA, and TD-
  • a PSTN Module which can: a) be used to connect a phone line and telephone set; b) include PCM Codec chip and controller chip; c) provide USB control interface for interconnecting other modules; and/or d) provide two RJl 1 jacks for phone line and telephone set. This provides an interface to connect to a landline telephone and the PSTN network;
  • a Cable Module which can: a) be used to connect a cable line; b) include PCM Codec chip and cable controller chip; c) provide USB control interface for interconnecting other modules. This provides an interface to connect to the Cable network; (d) a LAN Module, which can be used to connect a LAN segment (router and computer) or interface (Cable modem, ADSL modem) over Ethernet interface. This provides an interface to connect an existing LAN or Internet at the subscriber's site;
  • a Home-networking Module which can be used to connect consumer electronics devices over Bluetooth or Zigbee
  • a Wireless Module which can: a) be used for user's WiFi or WiMax access and network WiFi or WiMax interconnection; b) be a Network Adaptor with WiFi or WiMax chipsets based on WiFi or WiMax standards which can be configured for WiFi or WiMax access and WiFi or WiMax network to communications with other WiFi or WiMax modules in other gateway communications switches; and/or c) provide USB control interface for interconnecting other modules. This provides an interface for WiFi or WiMax network access and network interconnection;
  • a Switching Module which can: a) be used for routing digital voice/data stream between different modules, b) include a MCU, a DTMF coding/decoding chip, a multiplexer chip, and RS232 interface chip, and/or c) provide two RJl 1 jacks for phone line and telephone set. This provides the switching capability for service interworking among different types services over different types of networks.
  • a System Control Module which can: a) be used to control and manage the gateway system and network formed by the RizoNodes (including functions of network topology, signaling, routing, and management), b) include a CPU, a LAN chip, a multimedia chip, a bois chip, and storage devices (Ram and hard drive), and/or c) provide RS232 and USB control interface, analog voice interface and RJ45 LAN interface. This provides the control engine to manage the gateway switch and network formed by the gateway switches; and
  • a Data Storage Module which can be used for memory and data storage (including RAM and Hard drive). This provides the memory capability for programs and database storage.
  • Figure 3 shows the handset architecture for a special mobile handset working with the gateway communications switch
  • the architecture can include any or all of the following modules: (a) a System Control Module, which can be used to control the dialing rule to connect a gateway switch and/or access a WiFi wireless mesh network.
  • the System control Module can be used for, e.g., connecting to a selected RizoNode gateway switch and handover from one RizoNode to another RizoNode while traveling through a wireless mesh network formed by RizoNodes; and/or (b) a Switching Module, which can be used to select from two different voice transmission schemes that can include GSM over cellular network or VOIPAViFi over wireless mesh network or Internet.
  • a handset especially for the communication system described herein can be realized by upgrading a regular cell-phone or smart-phone with a software program, or by building specifically for working with the gateway switch.
  • FIG. 4 shows the service architecture of the gateway communications switch.
  • a gateway switch can be installed at a subscriber's site (home or office). The gateway switch enables the subscriber for voice or data communications from a mobile handset, or landline phone, or a personal computer to the other destination (a mobile handset, and landline phone, or a computer) that is a user either with or without connected to a RizoNode gateway switch at the remote site.
  • a subscriber can make voice calls via a mobile handset over Internet or WiFi mesh network using VOIP. This feature is illustrated in the following prophetic example.
  • EXAMPLE The following provides an illustrative, but not limiting, exemplary procedure of making voice calls for a subscriber using a gateway switch RizoNode:
  • a subscriber A uses a mobile phone to make a voice call, he/she dials a destination phone number (user B's number, either mobile handset or landline phone) through the mobile handset.
  • the user A's handset is programmed in such a way that it first connects to its associated gateway switch A by establishing a connection to the mobile module on the gateway switch A over the mobile network, or by establishing a connection to the PSTN module on the gateway switch A over the PSTN, or by establishing a connection to the LAN/Internet module on the gateway switch A over the Internet.
  • gateway switch A receives the call request with the destination number B, it makes a VOIP call to user B on behalf of user A.
  • the gateway switch A makes a call back to user A via cellular call, a PSTN call, or a VOIP call over Internet.
  • the gateway switch A makes a conference call between the two established calls, the call to user A and the call to user B, to establish an end-to-end call between the two users. Note that the call is considered as an incoming call for both user A and user B.
  • this mechanism enables a VOIP mobile service for mobile users without requiring the users to be present in the proximity of a WiFi/Internet access point (or known as "hot spot"), which is the necessary requirement and fundamental limit for some existing dual-mode phone services (cellular and WiFi) that try to take advantage of VOIP over Internet.
  • a WiFi/Internet access point or known as "hot spot”
  • the subscriber A can also uses a landline or a computer phone to make a voice call.
  • the gateway switch A makes a VOIP call to user B on behalf of user A over Internet or a multi-hop WiFi/WiMax mesh network.
  • the gateway switch A then connects the VOIP call with the landline phone or computer phone A via the switching module to establish the end-to-end call from the landline phone or computer phone A to user B.
  • gateway switch A can also interconnect other gateway switch via WiFi/WiMax or Internet connections (e.g., IP tunnels) for other network services, such as peer-to-peer IP services for data and/or video content distribution, location-based services (e.g., commerce, advertising, education), network utility services (e.g., grid supercomputing (commercial, scientific), and home-networking services (e.g., household consumer electronic device control, management, security surveillance).
  • WiFi/WiMax or Internet connections e.g., IP tunnels
  • IP tunnels e.g., IP tunnels
  • peer-to-peer IP services for data and/or video content distribution
  • location-based services e.g., commerce, advertising, education
  • network utility services e.g., grid supercomputing (commercial, scientific)
  • home-networking services e.g., household consumer electronic device control, management, security surveillance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Small-Scale Networks (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

La présente invention concerne un commutateur passerelle pour les communications hybrides filaires et sans fil.
PCT/US2008/052695 2007-01-31 2008-01-31 Commutateur passerelle pour les communications hybrides filaires et sans fil WO2008095123A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/534,073 US20100085948A1 (en) 2008-01-31 2009-07-31 Apparatuses for Hybrid Wired and Wireless Universal Access Networks
US12/534,065 US20100085916A1 (en) 2007-01-31 2009-07-31 Systems and Methods for Hybrid Wired and Wireless Universal Access Networks

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US89887407P 2007-01-31 2007-01-31
US60/898,874 2007-01-31

Related Child Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/052701 Continuation-In-Part WO2008095127A2 (fr) 2007-01-31 2008-01-31 Réseau d'accès universel hybride filaire et sans fil

Publications (2)

Publication Number Publication Date
WO2008095123A2 true WO2008095123A2 (fr) 2008-08-07
WO2008095123A3 WO2008095123A3 (fr) 2008-09-18

Family

ID=39674798

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/052695 WO2008095123A2 (fr) 2007-01-31 2008-01-31 Commutateur passerelle pour les communications hybrides filaires et sans fil

Country Status (1)

Country Link
WO (1) WO2008095123A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017124292A1 (fr) * 2016-01-19 2017-07-27 王晓光 Procédé et système de connexion de lieu pour vidéoconférence par réseau
CN109104650A (zh) * 2018-09-28 2018-12-28 北斗天地股份有限公司 多网络融合通信系统
CN110545238A (zh) * 2019-08-22 2019-12-06 神经元信息技术(深圳)有限公司 一种网关设备和通信系统
WO2020191939A1 (fr) * 2019-03-28 2020-10-01 深圳市威富通讯技术有限公司 Appareil de passerelle de communication
CN112242906A (zh) * 2019-07-16 2021-01-19 信宇开发有限公司 可编程的通讯装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005086243A (ja) * 2003-09-04 2005-03-31 Uniden Corp ゲートウェイ装置
WO2005122510A1 (fr) * 2004-06-07 2005-12-22 Ninety9.Com Pty Ltd Procede et dispositif de routage de communications

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005086243A (ja) * 2003-09-04 2005-03-31 Uniden Corp ゲートウェイ装置
WO2005122510A1 (fr) * 2004-06-07 2005-12-22 Ninety9.Com Pty Ltd Procede et dispositif de routage de communications

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SAITO T. ET AL.: 'Home gateway architecture and its implementation' IEEE TRANSACTIONS ON CONSUMER ELECTRONICS vol. 46, no. 4, November 2000, pages 1161 - 1166, XP001093610 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017124292A1 (fr) * 2016-01-19 2017-07-27 王晓光 Procédé et système de connexion de lieu pour vidéoconférence par réseau
CN109104650A (zh) * 2018-09-28 2018-12-28 北斗天地股份有限公司 多网络融合通信系统
WO2020191939A1 (fr) * 2019-03-28 2020-10-01 深圳市威富通讯技术有限公司 Appareil de passerelle de communication
CN112242906A (zh) * 2019-07-16 2021-01-19 信宇开发有限公司 可编程的通讯装置
CN110545238A (zh) * 2019-08-22 2019-12-06 神经元信息技术(深圳)有限公司 一种网关设备和通信系统

Also Published As

Publication number Publication date
WO2008095123A3 (fr) 2008-09-18

Similar Documents

Publication Publication Date Title
US8457082B2 (en) System and method for providing integrated voice and data services utilizing wired cordless access with unlicensed/unregulated spectrum
RU2455774C2 (ru) Система и способ непрямой связи для мобильных телефонов
US8532679B2 (en) System and method for providing a single telephone number for use with a plurality of telephone handsets
US7710949B1 (en) Distributed telecommunication network
KR20080057208A (ko) 네트워크 장치 및 네트워크 장치 동작 방법
CN103825805A (zh) 一种融合话音和数据功能的个人通信系统及实现方法
CN101459984A (zh) 一种将手机作为家庭座机的子机的系统及其控制方法
TW200808014A (en) Apparatus, method and machine readable medium for a cordless voice over IP phone
US20040116108A1 (en) Internet phone system and internet phone service method for a mobile telephone
CN102045466B (zh) 一种实现企业voip即时呼叫的方法
WO2008095123A2 (fr) Commutateur passerelle pour les communications hybrides filaires et sans fil
Chakraborty et al. Overview of VoIP technology
US9270799B2 (en) Using indirect communication to provide a solution to use international dialing convention and incorporating phone numbers for non-phone devices
JP3206362U (ja) Ip電話システム
CN1997081B (zh) 一种基于蓝牙接口的无线终端接入方法及其设备
KR101773850B1 (ko) 통화중계 게이트웨이를 이용한 통화 중계 방법 및 이를 위한 장치
JP4021715B2 (ja) 発信代行システム
JP2003264644A (ja) インターネットを使用した電話システム
WO2005071935A1 (fr) Modem a trajet de transmission a large bande, terminal radio, programme et support d'enregistrement
JP2006287602A (ja) 国際通話システムおよび国際通話方法
KR100350224B1 (ko) 근거리 통신망과 전화 장치를 결합한 통신 시스템
US20070036155A1 (en) Bridge apparatus for internet telephone exchange and internet phone system
CN201345677Y (zh) 一种电话机
JP2005072633A (ja) 短距離無線通信装置による通信アシストシステム
KR101539117B1 (ko) 통신 단말기의 자동 통화 전환 방법 및 이를 수행하는 통신단말기

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08728748

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08728748

Country of ref document: EP

Kind code of ref document: A2