Message arrangement and method for implementing a digital telephone system

• US 5,222,130 A
• Filed: 11/19/1990
• Issued: 06/22/1993
• Est. Priority Date: 11/19/1990
• Status: Expired due to Term

• Current Assignee: AG Communication Systems Corp. (Nokia Corporation)
• Original Assignee: AG Communication Systems Corp. (Nokia Corporation)
• Inventors: Dailey, Mark S., Slobodianuk, David A., Molling, Joseph M., Pflueger, Michael W.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Shehata, M.
• Application Number:
  US07/615,523
• Time in Patent Office: 946 Days
• Field of Search: 379/398, 379/399, 379/219, 379/220, 379/225, 379/227, 379/228, 379/229, 379/230, 379/231, 379/232
• US Class Current: 379/399.02
• CPC Class Codes: H04Q 11/0407 using a stored programme control

Abstract

A message arrangement and method for interfacing a digital telephone Digital system including a Digital Facility Line Card (DFLC) that connects a user operated Telephone Instrument (DTI) to a stored program operated digital Central Office (CO) system. The message arrangement comprises, a DFLC message processor that generates and transmits to the DTI control messages in response to report messages transmitted by the DTI, following a user activated DTI event. The control messages provide the user with visual and aural DTI operating information. The DFLC message processor further generates and transmits to a CO system central controller, device report messages requesting access to, and network services from the CO system, responsive to call processing report messages from the DTI. The CO system central controller sends device control messages to the DFLC which operates in accordance with the received device control messages to generate and transmit to the DTI, DTI control messages. The DTI control messages instruct the DTI to provide the user with operating information and to collect call processing data from the DTI, for transmission to the DFLC message processor. The DFLC message processor translates the call processing data and generates device report messages, which are transmitted to the CO system.

Claims

1. A message interfacing arrangement for a digital telephone system, said digital telephone system including a Digital Facility Line Card (DFLC) for connecting a Digital Telephone Instrument (DTI) to a Central Office (CO) system, said message interfacing arrangement comprising:

a DTI message processor arranged to generate and transmit to said DFLC, DTI report messages, responsive to user activated DTI events, and said DTI message processor further arranged to receive DTI control messages from said DFLC for instructing said DTI to operate features, and to provide a user with visual and aural DTI operating information;

a DFLC message processor connected to said DTI message processor, arranged to generate and transmit to said DTI message processor, said DTI control messages, for operating said DTI responsive to said DTI report messages, and said DFLC further connected to a central controller of said CO system, said DFLC message processor arranged to generate and transmit to said CO system central controller device report messages, requesting access to, and network services from said CO system, responsive to said DTI report messages; and

said CO system central controller arranged to send device control messages to said DFLC, whereby said DFLC operates in accordance with said device control messages to generate and send said DTI control messages to said DTI, and collect data from said DTI for transmission to said CO system.

2. A message interface arrangement as claimed in claim 1, wherein said DFLC message processor includes a transport handler that examines and classifies said DTI report messages and said device control messages, and said transport handler is arranged to pass said DTI report messages and said device control messages that involve call processing events to a DFLC call processing event processor.

3. A message interface arrangement as claimed in claim 2, wherein said DFLC call processing event processor includes:

an event preprocessor arranged to determine if said call processing event from said transport handler is a preprogrammed feature, whereby, said even preprocessor determines the function of said preprogrammed feature in a feature translation table and passes event information on for further processing;

an event processor arranged to receive said event information from said event proprocessor and unprogrammed call processing events and generate said DTI control messages and said device report messages in response to said call processing events and said event information;

a state machine arranged to receive said DTI control information from said event processor that correspond to received call processing events, said state machine arranged to change into specific operational states responsive to said received call processing events;

a programming request processor arranged to receive programmed call processing events and determine appropriate call processing responses to said received programmed call processing events and to pass said call processing responses to said event processor; and

a feature generic database arranged to be accessed by said programming requires processor, whereby, said appropriate call processing responses are derived in response to programmed call processing events.

4. A message interfacing arrangement for a digital telephone system, said digital telephone system including a Digital Facility Line Card (DFLC) for connecting a Digital Telephone Instrument (DTI) to a Central Office (CO) system, said message interfacing arrangement comprising:

a DFLC message processor arranged to generate and transmit to said DTI, DTI control messages, for operating DTI features, and to provide a user with visual and aural DTI operating information, in response to DTI report messages transmitted by said DTI following a user activated DTI event, said DFLC message processor further arranged to generate and transmit to said CO system device report messages requesting access to, and network services from, said CO system, and said CO system central controller arranged to send device control messages to said DFLC, whereby, said DFLC operates in accordance with said device control messages to generate and send said DTI control messages to said DTI, and collect data from said DTI for transmission to said CO system.

5. A method for interfacing a digital telephone system, including a Digital Facility Line Card (DFLC) having a message processor for handling control messages between a Digital Telephone Instrument (DTI) and a Central Office (CO) system, said method comprising the steps of:

sending DTI report messages to said DFLC message processor following user activated DTI events;

interpreting said DTI report messages by said DFLC message processor in accordance with specific data base stored instructions, and transmitting DTI control messages to said DTI for executing responses to said user activated DTI events, providing said user with visual and aural DTI operating information;

said DFLC message processor, generating and transmitting to said CO system device report messages requesting access to, and network services from said CO system, responsive to said DTI report messages; and

receiving and interpreting device control messages transmitted to said DFLC message processor from said CO system, requesting said DFLC message processor to generate and transmit to said DTI, said DTI control messages, which instruct said DTI to provide said user with operating information and to collect call processing data from said DTI for transmission to said DFLC message processor as said DTI report messages; and

said DFLC message processor translating said call processing data and generating said device report messages, thereby, transmitting said call processing data to said CO system.