Apparatus and method for troubleshooting internet protocol telephony networks

• US 5,966,427 A
• Filed: 09/30/1997
• Issued: 10/12/1999
• Est. Priority Date: 09/30/1997
• Status: Expired due to Term

• Current Assignee: Enterprise Systems Technologies S.a.r.l. (Atos SE)
• Original Assignee: Network Communications Incorporated (CoStar Group Inc.), Siemens Information
• Inventors: Shaffer, Shmuel, Beyda, William Joseph
• Primary Examiner(s): Kuntz, Curtis A.
• Assistant Examiner(s): Barnie, Rexford N.
• Application Number:
  US08/941,144
• Time in Patent Office: 742 Days
• Field of Search: 379/1, 379/900, 379/5, 379/6, 379/9, 379/10, 379/12, 379/15, 379/16, 379/18, 379/22, 379/23, 379/28, 379/26, 379/29, 370/249, 370/241, 370/242, 370/247, 370/250, 395/185.1, 395/500, 348/180, 348/193, 348/185, 348/181
• US Class Current: 379/15.05
• CPC Class Codes: H04L 12/2856 Access arrangements, e.g. Internet access asynchronous transfer mode networks H04L12/5601; broadband local area networks H04L12/2801; optical access or distribution networks H04Q11/0067; access to open networks H04L12/5691; digital subscriber line end-user equipment and bit-level processing of data on a PSTN-based network H04M11/00; home network gateways H04L12/2834; wireless access networks H04W
• CPC Class Codes: H04L 12/2874 Processing of data for distribution to the subscribers
• CPC Class Codes: H04M 1/24 Arrangements for testing
• CPC Class Codes: H04M 1/2535 adapted for voice communication over an Internet Protocol [IP] network Voice over Internet Protocol (VoIP) network equipment and services H04M7/006; implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04M 3/32 for lines between exchanges
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42
• CPC Class Codes: Y10S 379/90 Internet, e.g. Internet phone, webphone, internet-based telephony

Abstract

A device and method for IP telephony troubleshooting include multiple alternative input/output members for connecting the troubleshooting device to an IP telephony network at one of multiple sites within the IP telephony network. A system control connected to one of the connector members transmits and receives digital control messages to establish a bidirectional audio communications link over the IP telephony network. A system control user interface connected to the system control enables a user to direct a call to a remote telephonic device. A converter, connected to one of the connector members, converts digital audio signals received from the remote telephonic device to analog audio signals and converts analog audio signals generated by a microphone to digital audio signals for transmission to the remote telephonic device. An interface obtains synchronization with the remote telephonic device to facilitate synchronous data communication. In an alternative embodiment, the IP telephony troubleshooting device is an IP telephony adaptor for an analog telephony troubleshooting device.

Claims

1. A telephony troubleshooting device comprising:

a plurality of alternative input/output connector members for connecting said telephony troubleshooting device to establish connectivity with an Internet protocol (IP) telephony network at one of a plurality of different sites within said IP telephony network;

a system control, configured for an electrical association with said connector members, for transmitting and receiving digital control messages compatible with establishing an audio communication link over said IP telephony network via at least one selected connector member of said plurality of connector members;

a system control user interface connected to said system control to enable a user of said telephony troubleshooting device to direct a call to a remote telephonic device; and

means, operatively associated with said connector of said connector members, for enabling transmission and receipt of audio signals over said IP telephony network via said at least one selected connector member.

2. The telephony troubleshooting device of claim 1 wherein said enabling means includes an audio codec, connected to said connector members, for processing digital audio signals transmitted and received by said telephony troubleshooting device, a converter connected to said audio codec for converting a first digital audio signal received from said remote telephonic device by way of said at least one selected connector member to a first analog audio signal and for converting a second analog audio signal to a second digital audio signal transmitted to said remote telephonic device, said enabling means further including a speaker connected to said converter and responsive to said first analog audio signal and a microphone connected to said converter for converting speech into said second analog audio signal.

3. The telephony troubleshooting device of claim 1 wherein said IP telephony network is one of a local area network (LAN) and an intranet.

4. The telephony troubleshooting device of claim 1 wherein said connector members include at least one alligator clip for connecting to a cable of said IP telephony network, a first adaptor for connecting at one of a user wall jack and a HUB connection of said IP telephony network, and a second adaptor for connecting at a router port of said IP telephony network.

5. The telephony troubleshooting device of claim 3 wherein said remote telephonic device is a terminal unregistered to a gateway and within said LAN, said transmitted digital control messages include a Setup message transmitted to said terminal, and said received digital control messages include a Connect message received from said terminal.

6. The telephony troubleshooting device of claim 3 wherein said digital control messages are transmitted to and received from a gateway connected to said LAN, said transmitted digital control messages include an admission request (ARQ) message, and said received control messages include one of an admission confirmation (ACF) message and an admission reject (ARJ) message.

7. The telephony troubleshooting device of claim 2 further comprising:

a video monitor for displaying a video sequence connected to said converter;

a video codec connected to said converter for processing video signals for transmission by said telephony troubleshooting device over said IP telephony network and for processing video signals received by said telephony troubleshooting device over said IP telephony network to be displayed on said video monitor; and

non-volatile memory connected to said video codec for storing a video sequence for transmission by said telephony troubleshooting device over said IP telephony network.

8. A method for troubleshooting on an IP telephony network comprising the steps of:

connecting a telephony troubleshooting device to said IP telephony network;

transmitting a first digital telephony signal from said telephony troubleshooting device via said IP telephony network to a remotely located device, including generating said first digital signal to contain information requesting a return digital telephony signal from said remotely located device, said digital telephony signal exchange between said telephony troubleshooting device and said remotely located device being dedicated to establishing bidirectional audio communication capability over said IP telephony network; and

monitoring said connection between said telephony troubleshooting device and said remotely located device to determine whether said return digital telephony signal is received.

9. The method of claim 8 comprising the further steps of:

if it is determined from said monitoring step that said return digital signal is received, executing a loopback call wherein an audio test signal is transmitted over said IP telephony network, said loopback call being directed to an address assigned to said telephony troubleshooting device;

determining whether said audio test signal is received by said telephony troubleshooting device; and

if said audio test signal is received by said telephony troubleshooting device, analyzing said received audio test signal to determine performance characteristics of said transmission of said audio test signal over said IP telephony network.

10. The method of claim 8 wherein said transmitting step includes attempting to synchronize said remotely located device with said telephony troubleshooting device and said monitoring step includes monitoring said connection to establish whether said remotely located device has synchronized with said telephony troubleshooting device.

11. The method of claim 8 wherein said transmitting step includes transmitting said first digital telephony signal to said remotely located device that is a gateway connected to said IP telephony network and comprising the further step of:

after said return digital signal has been received, placing a call to a remote telephonic device to determine whether at least a portion of said IP telephony network is capable of supporting bidirectional audio communication.

12. The method of claim 8 wherein said connecting step takes place within a LAN at one of a wall jack connected to a cable of said LAN, a hub connection, a router port connection, and one of a plurality of sites within said LAN utilizing an alligator clip to connect said telephony troubleshooting device to said IP telephony network.

13. The method of claim 8 wherein said monitoring step includes making a determination of bandwidth availability of said connection between said remotely located device and said telephony troubleshooting device and determining whether a protocol incompatibility is responsible for a communication failure between said telephony troubleshooting device and said remotely located device.

14. The method of claim 8 comprising the further steps of:

if it is determined from said monitoring step that said return digital signal is received, executing a loopback call wherein a video sequence is transmitted over said IP telephony network, said loopback call being directed to an address assigned to said telephony troubleshooting device;

determining whether said video sequence is received by said telephony troubleshooting device; and

if said video sequence is received by said telephony troubleshooting device, analyzing said received sequence to determine performance characteristics of said transmission of said video sequence over said IP telephony network.

15. The method of claim 12 wherein said transmitting step includes transmitting said first digital telephony signal that is a Setup message to said remotely located device that is a terminal unregistered to a gateway, and wherein said return digital telephony signal is a Connect message.

16. An IP telephony adaptor for an analog telephony troubleshooting device comprising:

an electrical circuit connected to said analog telephony troubleshooting device for converting an analog DTMF signal generated by said analog telephony troubleshooting device to a first digital control message;

a system control, connected and responsive to said electrical circuit, for transmitting said first digital control message over an IP telephony network and for receiving a second digital control message, said transmission and receipt of said first and second digital control messages being necessary to establish a bidirectional audio communications link between said IP telephony adaptor and a remote telephonic device over said IP telephony network;

a converter connected to a microphone and a speaker of said analog telephony troubleshooting device for converting a first digital audio signal received from said remote telephonic device to a first analog audio signal transmitted to said speaker and for converting a second analog audio signal generated by said microphone to a second digital audio signal transmitted to said remote telephonic device;

a plurality of connectors, each individual connector designed for connecting said IP telephony adaptor to said IP telephony network at a different site on said network; and

an audio codec, connected to said converter and one of said plurality of connectors, for processing digital audio signals transmitted and received by said IP telephony adaptor.

17. The IP telephony adaptor of claim 16 wherein said plurality of connectors includes an alligator clip for connecting to a cable of said IP telephony network, a first adaptor for connecting to one of a user wall jack and a HUB connection of said IP telephony based network, and a second adaptor for connecting at a router port of said IP telephony network.

18. The IP telephony adaptor of claim 16 wherein said IP telephony network includes a LAN, said server is a gateway on said LAN, and said first digital control message transmitted to said gateway is an ARQ message, and said second digital control message received from said gateway is one of an ARJ message and an ACF message.

19. The IP telephony adaptor of claim 16 wherein one of said plurality of connectors is utilized to connect said IP telephony adaptor to a LAN, said remote device is a terminal on said LAN and is unregistered to a gateway, said first digital control message transmitted to said terminal is a Setup message, and said second digital control message received from said terminal is a Connect message.

20. The IP telephony adaptor of claim 16 wherein one of said plurality of connectors is enabled to connect said IP telephony adaptor at a site within a LAN that is one of a wall jack connected to a cable of said LAN, a hub connection, and a router port connection.