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call setup

A technology for call establishment and connection establishment, applied in the calling party number recording/indicating called user number device, subscriber special service, branch office equipment, etc., can solve the unreliable delay, does not provide automatic retransmission or confirmation mechanism, etc. question

Active Publication Date: 2021-01-01
MICROSOFT TECH LICENSING LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

UDP does not provide automatic retransmission or acknowledgment mechanism which makes it unreliable but not prone to delays

Method used

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Embodiment Construction

[0015] In existing systems, signaling for signaling in the signaling phase of a call is only triggered when the calling party (i.e. the user originating the call) actually instructs the calling device to call the target user (called party) Connection establishment. Depending on the situation, the signaling connection can take considerable time to establish, for example, a few seconds, or even more in extreme cases. This in turn can cause considerable delay between the calling party making the call and the called party being notified, since the call invitation (e.g., a SIP invite) cannot be sent until a signaling connection via which the call invitation is transmitted is established. .

[0016] For example, when making a traditional VoIP call, one of the first steps in making the call is to open a network connection (eg, to a server or P2P node) in order to establish transmission of call signaling to the target client. A network connection may be, for example, a TCP connectio...

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PUM

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Abstract

The behavior prediction algorithm predicts calls by monitoring user input to detect actions by the user that suggest that the user may want to initiate a call, and identifying candidate called parties for the call. The network address associated with the called party is also retrieved from the data store. Responsive to the behavior detection algorithm of the predictive call, a connection establishment message is sent via the network to the network address to establish a signaling connection over the network for sending the message to a device available to the called party. After the connection setup message has been sent, explicit instructions are received from the user to initiate a call to the called party. In response to receiving the explicit instruction, a call invitation is sent to the device via the signaling connection, thereby causing the device to output an incoming call notification.

Description

Background technique [0001] Traditional communication systems allow users of devices (eg, personal computers or mobile devices) to place voice or video calls between two or more users over a packet-based computer network (eg, the Internet). Such communication systems include Voice or Video over Internet Protocol (VoIP) systems. These systems are beneficial to users because they are generally at a much lower cost than traditional fixed line or mobile cellular networks. This is especially true for long-distance communications. In order to use a VoIP system, users install and execute client software on their devices. The client software establishes the VoIP connection and provides other functions, such as registration and user authentication. In addition to voice communications, clients may also establish connections for other communication media such as instant messaging ("IM"), SMS messaging, file transfers, screen sharing, whiteboard sessions, and voicemail. [0002] Netwo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04M1/724
CPCH04L65/1069H04M3/44H04M2203/556H04M1/56H04M3/42102H04M1/2757H04M1/724H04M7/0021
Inventor G·普拉姆
Owner MICROSOFT TECH LICENSING LLC