公开(公告)号：EP1209853A1

公开(公告)日：2002-05-29

申请号：EP01000643.5

申请日：2001-11-19

Applicant: Telogy Networks Inc.

Inventor： George, Edward ,  Guven, Erhan ,  Fruth, Frank Edward

IPC: H04L12/28

CPC classification number: H04L12/2898 ,  H04L12/4633 ,  H04L69/40 ,  H04M11/06

Abstract: The modem relay provides a local interface to the modem on both ends of a call, demodulates the full duplex data stream, packetizes the bits for transport over an IP network, and remodulates the data stream at the remote end. The modem relay provides bandwidth savings, and resistance to network packet loss. The modem relay mitigates the problems associated with using G.711 to send modem traffic, the physical layer of the modem signal is terminated locally for both ends of the call, only the data stream is sent over the network, and saving bandwidth. The modem data stream can also be transported in a redundant fashion, which allows for seamless error recovery in the event of single or double packet loss events. Since the data stream can be completely recovered after packet loss, the remote modem is able to recreate the local modem's transmission exactly. Bandwidth savings are also realized because the IP network only carries modem traffic when data is transmitted by the modem. When the modem is not transmitting data, no packets are sent on the IP network. In contrast, continuous 64 kbps packetization takes place when using G.711 to carry modem traffic. Lost packet recovery minimizes computational requirements and provides for recovery of lost packets during burst loss of a series of sequential packets. A redundant series of packets is sent with a staggered delay from the original series of packets. Staggering the transmission of redundant packets allows for the recovery of packets in the event that more than a single packet is lost. The length of the stagger must be greater than the length of the lost packets for all packets to be recovered. Staggering the transmission of redundant packets creates a delay in the recovery of lost packets equal to the length of the stagger. The length of the stagger is selected to accommodate expected burst packet loss and to provide acceptable delay.

Abstract translation: 调制解调器继电器在呼叫两端向调制解调器提供本地接口，解调全双工数据流，将这些比特分组化，以便通过IP网络传输，并重新调制远端的数据流。 调制解调器继电器提供带宽节省，并阻止网络丢包。 调制解调器中继减轻了使用G.711发送调制解调器流量的问题，调制解调器信号的物理层在呼叫两端本地终止，只有数据流通过网络发送，并节省带宽。 调制解调器数据流也可以以冗余的方式传输，这允许在单次或双重丢包事件的情况下进行无缝错误恢复。 由于数据流在数据包丢失后可以完全恢复，因此远程调制解调器能够准确地重新创建本地调制解调器的传输。 带宽节省也是实现的，因为当调制解调器发送数据时，IP网络仅承载调制解调器流量。 当调制解调器不传输数据时，IP网络上不会发送数据包。 相比之下，当使用G.711携带调制解调器流量时，会发生连续的64 kbps分组。 丢包分组恢复使计算需求最小化，并提供在一系列顺序分组的突发丢失期间恢复丢失的分组。 一系列冗余的数据包以原始系列数据包的交错延迟发送。 交错冗余数据包的传输允许在多于一个数据包丢失的情况下恢复数据包。 交错的长度必须大于要恢复的所有数据包的丢失数据包的长度。 交错冗余数据包的传输会导致丢失数据包的恢复等于交错长度的延迟。 选择交错的长度以适应预期的突发分组丢失并提供可接受的延迟。

公开(公告)号：EP1536611A3

公开(公告)日：2008-01-02

申请号：EP04105959.3

申请日：2004-11-22

Applicant: Telogy Networks Inc.

Inventor： Adlakha, Sachin ,  Fruth, Frank Edward ,  Kumar, Samant

IPC: H04L29/06 ,  H04M1/253 ,  H04N1/00

CPC classification number: H04L67/06 ,  H04L29/06 ,  H04L29/06027 ,  H04L67/02 ,  H04L69/329 ,  H04M1/2535 ,  H04M2201/52 ,  H04M2207/203 ,  H04N1/00209 ,  H04N1/0022 ,  H04N1/32704 ,  H04N1/32708 ,  H04N1/32719 ,  H04N1/32721 ,  H04N1/32741

Abstract: A fax-aware telephone (38) for handling facsimile transmissions over a computer network, such as the Internet, that includes a facsimile processing unit (40) for handling an incoming or outgoing facsimile call, a voice processing unit (42) for handling an incoming or outgoing voice call, a memory unit (44) for storing an incoming facsimile transmission, and a file transfer protocol client (46) for transferring a facsimile transmission to the computer network, an external storage device, or to a printer driver. The fax-aware telephone (38) handles a facsimile call and a voice call together over a single data line from a computer network.

公开(公告)号：EP1209853B1

公开(公告)日：2006-10-04

申请号：EP01000643.5

申请日：2001-11-19

Applicant: Telogy Networks Inc.

Inventor： George, Edward ,  Guven, Erhan ,  Fruth, Frank Edward

IPC: H04L12/28

CPC classification number: H04L12/2898 ,  H04L12/4633 ,  H04L69/40 ,  H04M11/06

公开(公告)号：EP1536611A2

公开(公告)日：2005-06-01

申请号：EP04105959.3

申请日：2004-11-22

Applicant: Telogy Networks Inc.

Inventor： Adlakha, Sachin ,  Fruth, Frank Edward ,  Kumar, Samant

IPC: H04L29/06 ,  H04M1/253 ,  H04N1/00

CPC classification number: H04L67/06 ,  H04L29/06 ,  H04L29/06027 ,  H04L67/02 ,  H04L69/329 ,  H04M1/2535 ,  H04M2201/52 ,  H04M2207/203 ,  H04N1/00209 ,  H04N1/0022 ,  H04N1/32704 ,  H04N1/32708 ,  H04N1/32719 ,  H04N1/32721 ,  H04N1/32741

Abstract: A fax-aware telephone (38) for handling facsimile transmissions over a computer network, such as the Internet, that includes a facsimile processing unit (40) for handling an incoming or outgoing facsimile call, a voice processing unit (42) for handling an incoming or outgoing voice call, a memory unit (44) for storing an incoming facsimile transmission, and a file transfer protocol client (46) for transferring a facsimile transmission to the computer network, an external storage device, or to a printer driver. The fax-aware telephone (38) handles a facsimile call and a voice call together over a single data line from a computer network.

Abstract translation: 一种用于处理诸如因特网的计算机网络上的传真传输的传真感知电话（38），其包括用于处理传入或传出传真呼叫的传真处理单元（40），用于处理传真 输入或输出语音呼叫，用于存储传入传真传输的存储单元（44）以及用于将传真传输传送到计算机网络的文件传输协议客户端（46），外部存储设备或打印机驱动程序。 传真感知电话（38）通过来自计算机网络的单个数据线一起处理传真呼叫和语音呼叫。