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US 8,271,049 B2Granted
System and method for enabling DTMF detection in a VoIP network
AssigneeTango Networks, Inc.
InventorsAndrew Silver, Lathan Lewis, Patricia Landgren
Life of this patent
Estimating the term…
Abstract
A method, mobile terminal, and system for selectively establishing an outgoing caller ID on a mobile terminal served by a wireless network, for identifying a line called on a mobile terminal, and for directing a call from a mobile terminal to a network subscriber based on accessed information of the subscriber in the subscriber's network.
Claims28
A method, comprising:
- configuring a packet engine in a bearer stream between a first telephone device and a second telephone device;
- determining, by the packet engine, via a buffer and an inter-digit timer utilized by the packet engine, a start and a stop of patterns associated with dual-tone multi-frequency digits in order to differentiate a feature invocation digit pattern from the dual-tone multi-frequency digits;
- and
- reporting, by the packet engine, a dual-tone multi-frequency event to the call server in response to determining the start and a stop of patterns associated with the dual-tone multi-frequency digits.
1 more element
A server, comprising:
- a user space module configured to receive and send commands from and to the Voice over Internet Protocol network;
- and
- a kernel module configured to receive a bearer stream comprising Real-time Transport Protocol packets from an IP stack, wherein the kernel module utilizes an inter digit timer to determine a start and a stop of patterns associated with the dual-tone multi-frequency digits in order to differentiate a feature invocation digit pattern from the dual-tone multi-frequency digits;
- wherein the user space module reports a dual-tone multi-frequency event to the call server in response to determining the start and a stop of patterns associated with the dual-tone multi-frequency digits.
1 more element
A server, comprising:
- a first module configured to establish a Voice over Internet Protocol call session;
- and
- a second module configured to detect digit events within an active Voice over Internet Protocol call session, wherein the second module utilizes a buffer and an inter digit timer to determine a start and a stop of patterns associated with the digit events in order to differentiate a feature invocation digit pattern from the digit events.
Dependencies are inferred from the claim text.