Generating and signaling tones in a communications network

• US 7,881,712 B1
• Filed: 04/25/2005
• Issued: 02/01/2011
• Est. Priority Date: 12/23/2004
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Luo, Chengsheng, Houghton, David A., Mekala, Anantha R.
• Primary Examiner(s): D AGOSTA, STEPHEN M
• Application Number:
  US11/113,679
• Time in Patent Office: 2,108 Days
• Field of Search: 455/432.1, 455/433, 455/435.1, 455/435.2, 455/466, 455/414.1, 455/422.1, 455/450, 455/560, 379/221.02, 379/201.2, 379/265.09, 379/221.01, 379/406.01, 370/352, 370/354, 370/356, 370/390, 370/466, 370/396, 370/401, 370/392, 370/355
• US Class Current: 455/422.1
• CPC Class Codes: H04M 2207/18 wireless networks
• 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: H04M 7/129 Details of providing call progress tones or announcements

Abstract

A technique for providing a flexible approach to generating and signaling tones, such as call progress tones, in a communications network is described. Parameters associated with tones generated and signaled in a communication network are dynamically configured. A tone to be generated and signaled onto the network is specified in a request that identifies the tone. Parameters associated with the specified tone are identified. The information representing the tone is then generated in accordance with the identified parameters and signaled onto the communications network.

Claims

1. A method for generating a signaling tone in a communications network, the method carried out at a gateway intermediate node located between a time division multiplex network and a packet switched network, and the method comprising the steps of:

receiving, from one or more service providers, tone database configuration information related to one or more tone schemes;

receiving a first message at the gateway intermediate node from a mobile switching center in the time division network, the first message initiating a call progress tone generation sequence;

sending the first message from the gateway intermediate node to a call agent via the packet switched network;

receiving a second message at the gateway intermediate node from the call agent, the second message representing a request for the gateway intermediate node to generate the tone, the second message containing information associated with the requested tone;

using the information associated with the tone, accessing a preconfigured database to identify physical tone parameters needed to generate the tone, so that the gateway intermediate node is enabled to support multiple tone schemes and multiple service providers; and

generating the tone based on the identified physical tone parameters at the gateway intermediate node,

wherein the parameters stored in the database are defined by a user that accesses the gateway intermediate node using a data terminal directly connected to the intermediate node.

2. A method for generating a signaling tone in a communications network, the method carried out at a gateway intermediate node located between a time division multiplex network and a packet switched network, and the method comprising the steps of:

receiving, from one or more service providers, tone database configuration information related to one or more tone schemes;

receiving a first message at the gateway intermediate node from a mobile switching center in the time division network, the first message initiating a call progress tone generation sequence;

sending the first message from the gateway intermediate node to a call agent via the packet switched network;

receiving a second message at the gateway intermediate node from the call agent, the second message representing a request for the gateway intermediate node to generate the tone, the second message containing information associated with the requested tone;

using the information associated with the tone, accessing a preconfigured database to identify physical tone parameters needed to generate the tone, so that the gateway intermediate node is enabled to support multiple tone schemes and multiple service providers; and

generating the tone based on the identified physical tone parameters at the gateway intermediate node,

wherein the parameters stored in the database are defined by a user that accesses the gateway intermediate node using a protocol.

3. A method as defined in claim 2 wherein the protocol is the Simple Network Management Protocol (SNMP).

4. A method for generating a signaling tone in a communications network, the method carried out at a gateway intermediate node located between a time division multiplex network and a packet switched network, and the method comprising the steps of:

receiving, from one or more service providers, tone database configuration information related to one or more tone schemes;

receiving a first message at the gateway intermediate node from a mobile switching center in the time division network, the first message initiating a call progress tone generation sequence;

sending the first message from the gateway intermediate node to a call agent via the packet switched network;

receiving a second message at the gateway intermediate node from the call agent, the second message representing a request for the gateway intermediate node to generate the tone, the second message containing information associated with the requested tone;

using the information associated with the tone, accessing a preconfigured database to identify physical tone parameters needed to generate the tone, so that the gateway intermediate node is enabled to support multiple tone schemes and multiple service providers; and

generating the tone based on the identified physical tone parameters at the gateway intermediate node,

wherein the tone is generated at the gateway intermediate node in the communication network and signaled by the first gateway intermediate node to another gateway intermediate node in the communication network.

5. A method as defined in claim 4 wherein the tone is generated at the gateway intermediate node in the communication network and signaled to a mobile switching center (MSC) in the communication network.

6. A method as defined in claim 4 wherein the parameters stored in the database include one or more frequencies that make up the tone.

7. A method as defined in claim 4 wherein the parameters stored in the database include a duration that indicates a duration of the tone.

8. A method as defined in claim 4 wherein the parameters stored in the database include an amplitude that indicates an amplitude of the tone.

9. A method for generating a signaling tone in a communications network, the method carried out at a gateway intermediate node located between a time division multiplex network and a packet switched network, and the method comprising the steps of:

receiving, from one or more service providers, tone database configuration information related to one or more tone schemes;

receiving a first message at the gateway intermediate node from a mobile switching center in the time division network, the first message initiating a call progress tone generation sequence;

sending the first message from the gateway intermediate node to a call agent via the packet switched network;

receiving a second message at the gateway intermediate node from the call agent, the second message representing a request for the gateway intermediate node to generate the tone, the second message containing information associated with the requested tone;

using the information associated with the tone, accessing a preconfigured database to identify physical tone parameters needed to generate the tone, so that the gateway intermediate node is enabled to support multiple tone schemes and multiple service providers; and

generating the tone based on the identified physical tone parameters at the gateway intermediate node,

wherein the parameters stored in the database include a temporal pattern that indicates a pattern associated with the tone.

10. An apparatus for generating a signaling tone at a gateway intermediate node located between a time division multiplex network and a packet switched network in a communications network, the apparatus comprising:

a first receiver for receiving, from one or more service providers, tone database configuration information related to one or more tone schemes;

a second receiver for receiving a first message, at the gateway intermediate node, from a mobile switching center in the time division network, the first message initiating a call progress tone generation sequence;

a first transmitter for sending the first message from the gateway intermediate node to a call agent via the packet switched network;

a third receiver for receiving a second message at the gateway intermediate node from the call agent, the second message representing a request for the gateway intermediate node to generate the tone, the second message containing information associated with the requested tone; and

a preconfigured database for using the information associated with the tone and identifying physical tone parameters needed to generate the tone, so that the gateway intermediate node is enabled to support multiple tone schemes and multiple service providers; and

a tone generator for generating the tone based on the identified physical tone parameters at the gateway intermediate node, wherein the tone being generated at the gateway intermediate node in the communication network and signaled by the gateway intermediate node to another gateway intermediate node in the communication network.

11. An apparatus as defined in claim 10 wherein the tone is generated at the gateway intermediate node in the communication network and signaled to a mobile switching center (MSC) in the communication network.

12. The apparatus of claim 10 wherein the parameters stored in the database include one or more frequencies that make up the tone.

13. The apparatus of claim 10 wherein the parameters stored in the database include a duration that indicates a duration of the tone.

14. The apparatus of claim 10 wherein the parameters stored in the database include an amplitude that indicates an amplitude of the tone.

15. A gateway intermediate node for generating a signaling tone in a communications network, the gateway intermediate node being located between a time division multiplex network and a packet switched network and comprising:

means for receiving, from one or more service providers, tone database configuration information related to one or more tone schemes;

means for receiving a first message at the gateway intermediate node from a mobile switching center in the time division network, the first message initiating a call progress tone generation sequence;

means for sending the first message from the gateway intermediate node to a call agent via the packet switched network;

means for receiving a second message at the gateway intermediate node from the call agent, the second message representing a request for the gateway intermediate node to generate the tone, the second message containing information associated with the requested tone;

means for accessing a preconfigured-database to identify physical tone parameters needed to generate the tone, using the information associated with the tone, so that the gateway intermediate node is enabled to support multiple tone schemes and multiple service providers; and

means for generating the tone based on the identified physical tone parameters at the gateway intermediate node, wherein the tone is generated at the first gateway intermediate node in the communication network and signaled by the gateway intermediate node to another gateway intermediate node in the communication network.

16. A tangible, non-transitory, computer readable medium for storing computer executable instructions for generating a signaling tone at a gateway intermediate node located between a time division multiplex network and a packet switched network, in a communications network, the computer executable instructions for:

receiving, from one or more service providers, tone database configuration information related to one or more tone schemes;

receiving a first message at the gateway intermediate node from a mobile switching center in the time division network, the first message initiating a call progress tone generation sequence;

sending the first message from the gateway intermediate node to a call agent via the packet switched network;

receiving a second message at the gateway intermediate node from the call agent, the second message representing a request for the gateway intermediate node to generate the tone, the second message containing information associated with the requested tone;

using the information associated with the tone, accessing a preconfigured database to identify physical tone parameters needed to generate the tone, so that the gateway intermediate node is enabled to support multiple tone schemes and multiple service providers; and

generating the tone based on the identified physical tone parameters at the gateway intermediate node, the tone being generated at a first gateway intermediate node in the communication network and signaled by the first gateway intermediate node to a second gateway intermediate node in the communication network.