Telemetry feature protocol expansion

• US 5,394,461 A
• Filed: 05/11/1993
• Issued: 02/28/1995
• Est. Priority Date: 05/11/1993
• Status: Expired due to Term

• Current Assignee: American Telephone & Telegraph Company (AT&T, Inc.)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Garland, Stuart M.
• Primary Examiner(s): Chan, Wing F.
• Application Number:
  US08/060,322
• Time in Patent Office: 658 Days
• Field of Search: 379/104-107, 379/102, 379/92
• US Class Current: 379/106.09
• CPC Class Codes: H04M 11/002 with telemetering systems telemetering in general G08C

Abstract

An expanded telemetry feature protocol allowing the provision of additional transport capabilities: 1) switch alert of CPE or voice equipment, 2) activation of other switch capabilities, 3) a barge-in capability, and 4) a broadcast capability. A telemetry function identification is included in the protocol to define a plurality of telemetry applications. Other extensions to the protocol allow sequential broadcast of voice or data to a list of destinations, operation with an analog display station interface (ADSI) station, and subaddressing to specify particular destinations.

Claims

1. A control method for use by a telephone switching system, said system being in an arrangement where an accessing device is connected by at least one trunk (UTT) to a switching network internal to said switching system, and where said network is connected via customer lines to a plurality of destinations, said method comprising

said switching system receiving trunk signaling including a function identifier from said data accessing device on said at least one trunk, said function identifier comprises:

customer premises equipment (CPE) alert codes, switch function codes, and control data,

in response to said received signaling, said switching system implements control activities including controlling connections between said accessing device and at least one of said destinations via said network and in accordance with said function identifier.

2. A method in accordance with claim 1 where said controlling comprises

in response to said signaling, establishing a suppressed ringing connection through said network to said at least one destination.

3. A method in accordance with claim 1 where said controlling comprises

in response to said signaling, selecting and generating a device alerting signal within said switching system, and

transmitting said generated signal to said at least one destination.

4. A method in accordance with claim 3

after transmitting said generated signal, receiving acknowledgment from said at least one destination,

informing said accessing device of said acknowledgment.

5. A method in accordance with claim 1 where said signaling includes a broadcast list specifying a plurality of directory numbers, said method further comprising

storing said broadcast list within said switching system.

6. A method in accordance with claim 1 where said signaling includes a directive to a broadcast list stored within said switching system, said list specifying a plurality of directory numbers identifying ones of said lines, and said signaling further includes broadcast data, where said controlling comprises

storing said broadcast data, and

sequentially broadcasting said broadcast data on said ones of said lines.

7. A method in accordance with claim 6 where said data accessing device is further connected to said switching system by a data link, where said signaling includes a directive to a broadcast list stored within said switching system, said list specifying a plurality of directory numbers identifying ones of said lines, said method further comprising

receiving broadcast data on said data link,

storing said broadcast data, and

sequentially broadcasting said broadcast data on said ones of said lines.

8. A method in accordance with claim 1 where said controlling is performed irrespective of the busy/idle status of the one of said lines connected to said at least one destination.

9. A method for use by a telephone switching system in accordance with claim 1 wherein:

in response to said received signaling, said switching system deactivating a class of features of said switching system for one of said lines, controlling a telemetry call from said accessing device via said at least one trunk and said network to a destination connected to said at least one line, and reactivating said class of features after the completion of said call.

10. A telephone switching system comprising

a switching network for interconnecting a multiplicity of telecommunications trunks and a multiplicity of customer lines,

at least one of said trunks connectable to a device for accessing a customer premises device,

means for selectively generating any one of a plurality of device alerting signals, and

processor means for a) translating a class of service of said at least one trunk, b) in response to said translating and to receipt, on said at least one trunk, of a function identification of a first kind, establishing a suppressed ringing connection through said network on which device alerting signals from said accessing device are transmitted to a customer line and c) in response to said translating and to receipt, on said at least one trunk, of a function identification of a second kind, controlling the generation and transmission of device alerting signals from within said switching system to a customer line.

11. A control method for use by a telephone switching system in an arrangement where an accessing device (20) is connected by at least one trunk (UTT)to a switching network internal to said switching system, where said network is connected via customer lines to a plurality of customer premises devices and to voice stations associated with ones of said customer premises devices, said at least one trunk having a class of service defined for telemetry or voice communication, said method comprising

receiving trunk signaling including telemetry function identifications from said accessing device via said at least one trunk,

controlling telemetry between said accessing device and said customer premises devices via said network in accordance with ones of said identifications, and

enabling the communication of voice from said data accessing device to said voice stations via said network in accordance with others of said identifications.

12. A method in accordance with claim 11 where voice communications from said data accessing device are transmitted to said switching system via a data link associated with said at least one trunk.

13. A method in accordance with claim 11 where said enabling comprises

in response to one of said other identifications, deactivating a class of line features for one of said voice stations for the duration of a voice communication to said one voice station.

14. A method in accordance with claim 11 wherein said controlling comprises

receiving and storing voice messages from said accessing device and transmitting said stored voice messages to said voice stations.

15. A method in accordance with claim 14 wherein said controlling further comprises

prior to transmitting one of said stored voice messages to one of said voice stations, transmitting power ringing to said one voice station.