WO1999031857A1 - Reseau de telephonie multiligne pour traiter les messages entrants d'identification de l'appelant - Google Patents

Reseau de telephonie multiligne pour traiter les messages entrants d'identification de l'appelant Download PDF

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Publication number
WO1999031857A1
WO1999031857A1 PCT/US1998/018091 US9818091W WO9931857A1 WO 1999031857 A1 WO1999031857 A1 WO 1999031857A1 US 9818091 W US9818091 W US 9818091W WO 9931857 A1 WO9931857 A1 WO 9931857A1
Authority
WO
WIPO (PCT)
Prior art keywords
handsets
caller
message
base unit
handset
Prior art date
Application number
PCT/US1998/018091
Other languages
English (en)
Inventor
Kumar Ramaswamy
Paul Gothard Knutson
Maneck Behram Kapadia
Original Assignee
Thomson Consumer Electronics, Inc.
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 Thomson Consumer Electronics, Inc. filed Critical Thomson Consumer Electronics, Inc.
Priority to AU91279/98A priority Critical patent/AU9127998A/en
Priority to KR1020007006251A priority patent/KR20010040294A/ko
Publication of WO1999031857A1 publication Critical patent/WO1999031857A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • H04M1/72502—Cordless telephones with one base station connected to a single line
    • H04M1/72505—Radio link set-up procedures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/57—Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set

Definitions

  • the present invention relates to multi-line telephone systems and, particular, to multi-line wireless digital telephone systems receiving Type I or II Caller ID messages from an external central office.
  • caller ID (where ID stands for identification). This allows the user of a given telephone to receive information about a n incoming call, such as the telephone number, city, and identity of the caller.
  • Type I caller ID messages are those that are provided to a suitably configured telephone that is "on hook.” For example, if the on hook telephone rings, at this time caller ID information o r messages transmitted by a remote central or local office, may b e displayed on a device or display built into or connected to th e telephone.
  • Type II caller ID messages are those that are provided to a suitably configured telephone that is "off hook," or active, i.e. engaged in a telephone conversation. For example, while a user is using th e telephone, caller ID information may be displayed on a telephone unit display, to indicate the identity of a caller for a second incoming call. The user at this point may decide, for example, whether to accept th e second call via a call-waiting service. Caller ID services can be difficult or complicated to implement in corded and wireless multi-line telephone systems. Such systems are becoming more prevalent.
  • a wireless telephone handset unit communicates via either analog or digital radio signals with a base unit, which is typically connected via one o r more standard telephone lines (plain old telephone service, or POTS) to an external telephone network.
  • POTS plain old telephone service
  • Multi-line wireless telephone systems are also in use in various situations, such as businesses with many telephone users. Such systems employ a handset that communicates with up to N handsets simultaneously, typically with digital communications schemes, such as time division multiple access (TDMA).
  • TDMA time division multiple access
  • a single RF channel is used, and each handset transmits and receives data during a dedicated time slice within an overall cycle or epoch.
  • PBX private branch exchange
  • a telephone system comprises a plurality of handsets and a base unit coupleable to a local office via one or more external telephone lines and for communicating with each of the plurality of handsets.
  • the base unit detects, acknowledges, and receives a caller ID message incoming from the local office, without interrupting communications of the plurality of handsets.
  • the base unit notifies the plurality of handsets of the caller ID message, and transmits, to selected handsets, the caller ID message.
  • Fig. 1 is a block diagram of TDMA multi-line wireless telephone system, in accordance with an embodiment of the present invention
  • Fig. 2 illustrates the data format for a Type I caller ID message
  • Fig. 3 illustrates the data format for a Type II caller ID message
  • Fig. 4 illustrates a signaling protocol for exchanging caller ID information between the base unit of the system of Fig. 1 and a local office, in accordance with an embodiment of the present invention
  • Fig. 5 is a flow chart illustrating the method of operation of the base unit of the system of Fig. 1 in handling incoming caller ID messages, in accordance with an embodiment of the present invention.
  • the present invention provides a mechanism to detect and regulate Type II Caller ID messages from a Central Office (CO) or Stored-Program Control Switching System (SPCS) at the base station of a multi-line multi-handset phone system.
  • CO Central Office
  • SPCS Stored-Program Control Switching System
  • This mechanism is applicable to both corded and wireless phone systems as long as there is only one phone attached to each incoming line from the CO.
  • Type I Caller ID is automatically supported as well.
  • FIG. 1 there is shown a block diagram of spread spectrum TDMA multi-line digital wireless telephone system 100, in accordance with an embodiment of the present invention.
  • TDMA system 100 comprises a base unit 110, which has receiver and transmitter units 112 and 111, respectively, and is coupled to external telephone network 1 16 via telephone line(s) 1 15.
  • Base unit 110 implements the present invention, as described in further detail below.
  • System 100 also comprises N wireless handsets 1201 , 1202 , . . . 120j f .
  • Each has a transmitter and receiver unit (transceiver), such as transmitter 121 and receiver 122 of handset 120 j .
  • receiver unit 112 comprises N logical receivers
  • transmitter unit 111 comprises N logical transmitters, so that receiver and transmitter units 112 and 111 provide N logical transceiver units, one for each of N wireless handsets.
  • M handsets (0 ⁇ M ⁇ N) are operating or active (i.e., in the process of conducting a telephone call).
  • system 100 comprises 4 handsets, and is coupled by 4 POTS (Plain Old Telephone System) lines (e.g., via external network 116) to a central or local office from which a n incoming call, and associated caller ID messages, originate.
  • POTS Packet Old Telephone System
  • the telephone system provided by system 100 preferably provides features like that of a small PBX, and preferably operate in the 900 MHz unlicensed band.
  • system 100 employs a combination of time division multiplexing (TDM), such as TDMA, and frequency band selection to overcome interfering sources and to maintain reliable links between the base- station and the handsets.
  • TDM time division multiplexing
  • each handset only transmits or receives data during its own "time slice" or slot.
  • System 100 thus provides a wireless network between the base station 110 and each handset 120 j (1 ⁇ i ⁇ N).
  • CPE customer premises equipment
  • Fig. 2 there is shown the data format 200 for a Type I caller ID message.
  • the caller ID information is sent to the CPE by the SPCS as frequency shift keyed (FSK) information when power ringing is applied.
  • FSK frequency shift keyed
  • the format and timing of such Type I caller ID information is shown in Fig. 2 and is based on the TIA (Telecommunications Industry Association, http://www.tiaonline.org/) standard (Bellcore document SR-TSV- 002476, issue 1, Dec. 1997).
  • a first power ring 201 occurs, lasting about 2 seconds, followed by a second power ring 203 about 4 seconds later. In the 4 seconds between power rings 201 , 203, FSK data 202 is transmitted.
  • This mode does not directly support the concept of an off-hook signaling protocol.
  • Fig. 3 there is shown the data format 300 for a Type II caller ID message.
  • This mode is a superset of the Type I mode of operation.
  • the Type II mode of operation supports the off-hook caller LD feature in conjunction with the call waiting feature.
  • the format and timing of such Type I caller ID information is shown in Fig. 3.
  • the GO sends a CPE Alerting Signal (CAS) 301, which must be acknowledged by the CPE. Since a call is in progress, the voice signal must b e temporarily muted to send the acknowledgment back to the CO a s well as to send the caller ID message back to the CPE.
  • CAS CPE Alerting Signal
  • a FSK data burst 303 that embeds a single message or multiple messages according to some specified format is transmitted, during the voice muted period. Subsequently, the voice is unmuted and conversation can resume.
  • the telephone user at this point may decide, for example, based on the displayed caller ID message, to click over to the second incoming call via call waiting.
  • a signaling protocol for exchanging caller ID information between the base unit 110 of system 100 and a local office 401 in accordance with an embodiment of the present invention.
  • the signaling protocol of the pre sent invention allows base station of a multiple handset system to manage the response to an incoming Type II Caller ID signal. This allows th e base unit 110 to both detect and regulate an incoming caller ID signal, and also to send a meaningful response back to the originator thereof (local office 401).
  • local office 401 For purposes of the following illustration, it is assumed that there is only one physical line connection tied to each incoming line from local office 401, and that some handsets are off- hook and are in voice conversation.
  • the CAS signaling tone 301 arrives at the base unit 110 from local office 401.
  • Base unit 110 responds with ACK message 302.
  • the FSK data 303 is then sent in a single message or multiple message format.
  • Base station 110 comprises a CPU o r processor 422, coupled to base station memory 42 l j for each handset 120 j and to transmitter 111 and receiver 112. After base station 1 1 0 receives FSK data 303, it is stored in the base memory for each handset by processor 422, i.e. it is stored in each of memories 421 j - 42 I4. Meanwhile, off hook handsets I 2O1-I 2O4 are oblivious to these events, and may continue their telephone calls unmuted.
  • a flow chart 5 00 illustrating the method of operation of base unit 110 in handling incoming caller ID messages, in accordance with an embodiment of the present invention.
  • the received FSK data 303 comprising the incoming caller ID message is stored in nonvolatile memories 42 l j for all handsets (step 501). As will b e understood, some handsets are in "sleep" mode, and some are i n active mode.
  • base 110 establishes a secure link with each handset (step 502).
  • This step 502 entails establishing (in th e case of a handset in the sleep mode) or reestablishing a connection with each handset.
  • base unit 110 transmits a message (on the data channel) to each handset, informing them of th e incoming caller ID call. If the handset is off hook, then the indication to the handset is in the form of a call waiting type indication. If th e handset is on-hook, then the indication is a power ring or some other appropriate indication.
  • the handset wants the caller ID message it may respond with an appropriate message, which can b e different depending on whether the handset is on-hook or off-hook.
  • base unit 110 For handsets that request the caller ID information (step 503), base unit 110 sends the caller ID information to these handsets (step 510). (If no handsets request the caller ID information within a specified time, the base unit exits from the caller ID mode (steps 52 1 - 523).) This information is then displayed on the appropriate display devices of the handsets requesting the information (step 51 1 ) . Handsets which choose to receive the call respond in step 512.
  • the base makes a determination as to which handset gets control for the call- waiting response (step 514).
  • the control determination is sent in th e form of an indication beep (step 515) to only the handset which is designated to be in charge of responding to the incoming caller ID call. That particular handset can then signal with the line and choose to establish a connection as with a normal single line connection (step 516). If only a single handset has responded, it receives an indication that it may accept the call (steps 513, 515).
  • wireless system described above may be a cellular system where base unit 110 represents a base station serving one of the cells in a cellular telephone network.

Abstract

La présente invention concerne un réseau téléphonique comprenant une pluralité de combinés et une unité de base pouvant être couplée à un centre local par une ou plusieurs lignes téléphoniques externes, et communiquant avec chacun desdits combinés. L'unité de base détecte, reçoit un message d'identification de l'appelant en provenance du centre local et en accuse la réception, sans interrompre les communications entre la pluralité des combinés. L'unité de base informe la pluralité des combinés du message d'identification de l'appelant, puis le transmet aux combinés sélectionnés.
PCT/US1998/018091 1997-12-12 1998-09-01 Reseau de telephonie multiligne pour traiter les messages entrants d'identification de l'appelant WO1999031857A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU91279/98A AU9127998A (en) 1997-12-12 1998-09-01 Multi-line telephone system for handling incoming caller id messages
KR1020007006251A KR20010040294A (ko) 1997-12-12 1998-09-01 입중계 호출자ｉｄ 메시지를 처리하기 위한 멀티-라인전화 시스템

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US6934497P 1997-12-12 1997-12-12
US60/069,344 1997-12-12

Publications (1)

Publication Number Publication Date
WO1999031857A1 true WO1999031857A1 (fr) 1999-06-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/018091 WO1999031857A1 (fr) 1997-12-12 1998-09-01 Reseau de telephonie multiligne pour traiter les messages entrants d'identification de l'appelant

Country Status (4)

Country Link
KR (1) KR20010040294A (fr)
CN (1) CN1126394C (fr)
AU (1) AU9127998A (fr)
WO (1) WO1999031857A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000076187A1 (fr) * 1999-06-08 2000-12-14 Conexant Systems, Inc. Transfert de donnees entre homologues utilisant une infrastructure de signalisation par fsk de classe d'identificateur d'appelant preexistante
FR2810829A1 (fr) * 2000-06-27 2001-12-28 Sagem Reseau local de telephonie radio et base radio economique pour ledit reseau
DE10084834B4 (de) * 1999-07-22 2010-04-08 Intel Corp. (N.D.Ges.D. Staates Delaware), Santa Clara Lieferung der Anruferidentifikation in kabellosen lokalen Schleifen- oder anderen Systemen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5581599A (en) * 1993-12-30 1996-12-03 Northern Telecom Limited Cordless telephone terminal
US5636266A (en) * 1996-02-15 1997-06-03 Mti International Wireless caller information processing system
EP0778715A2 (fr) * 1995-12-04 1997-06-11 Nokia Mobile Phones Ltd. Système de transfert d'informations d'une station de base vers un téléphone portable
GB2318951A (en) * 1996-10-31 1998-05-06 Nec Corp CLI telephone system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5581599A (en) * 1993-12-30 1996-12-03 Northern Telecom Limited Cordless telephone terminal
EP0778715A2 (fr) * 1995-12-04 1997-06-11 Nokia Mobile Phones Ltd. Système de transfert d'informations d'une station de base vers un téléphone portable
US5636266A (en) * 1996-02-15 1997-06-03 Mti International Wireless caller information processing system
GB2318951A (en) * 1996-10-31 1998-05-06 Nec Corp CLI telephone system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000076187A1 (fr) * 1999-06-08 2000-12-14 Conexant Systems, Inc. Transfert de donnees entre homologues utilisant une infrastructure de signalisation par fsk de classe d'identificateur d'appelant preexistante
US6304642B1 (en) 1999-06-08 2001-10-16 Conexant Systems, Inc. Peer-to-peer data transfer using pre-existing caller ID CLASS FSK signaling infrastructure
US6404868B1 (en) 1999-06-08 2002-06-11 Conexant Systems, Inc. Peer-to-peer transfer using pre-existing caller ID CLASS FSK signaling infrastructure
DE10084834B4 (de) * 1999-07-22 2010-04-08 Intel Corp. (N.D.Ges.D. Staates Delaware), Santa Clara Lieferung der Anruferidentifikation in kabellosen lokalen Schleifen- oder anderen Systemen
FR2810829A1 (fr) * 2000-06-27 2001-12-28 Sagem Reseau local de telephonie radio et base radio economique pour ledit reseau
EP1168785A1 (fr) * 2000-06-27 2002-01-02 Sagem S.A. Réseau local de téléphonie radio et base radio économique pour ledit réseau

Also Published As

Publication number Publication date
CN1126394C (zh) 2003-10-29
KR20010040294A (ko) 2001-05-15
AU9127998A (en) 1999-07-05
CN1295751A (zh) 2001-05-16

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