Title:
非同期媒体によるデータの同期伝送のための方法及び装置
Document Type and Number:
Japanese Patent JP4571136
Kind Code:
B2
Abstract:
A gateway apparatus includes multiple network server cards which are synchronized with each other to allow time slot switching of synchronous data across an asynchronous medium between source and destination server cards. The gateway includes synchronization logic and a data adaptation layer which implements a protocol for formatting of synchronous serial data. The data undergoes serial to parallel conversion and is formed into per time slot subpackets which are further packetized along with context and synchronization data. The packet is transmitted through an asynchronous switch after which the packet is disassembled into its constituent subpackets and queued into play-out buffers according to each subpackets' associated context and synchronization data. The apparatus allows synchronous data to be switched from a source time slot to a destination time slot across the asynchronous switch with a known, fixed delay. The gateway apparatus requires only a single asynchronous switch to transmit data between and among both the synchronous and asynchronous domains.
Inventors:
Mark smith
Lee shipping
James Pasco Anderson
Lee shipping
James Pasco Anderson
Application Number:
JP2006526238A
Publication Date:
October 27, 2010
Filing Date:
September 08, 2004
Export Citation:
Assignee:
Sonus Networks, Inc.
International Classes:
H04L12/66; H04J3/16; H04J3/22; H04J3/24; H04L12/56; G06F
Domestic Patent References:
| JP7336354A | ||||
| JP2001308923A | ||||
| JP2000232482A | ||||
| JP9162888A | ||||
| JP8307425A | ||||
| JP8251191A | ||||
| JP7099493A | ||||
| JP2002335284A |
Foreign References:
| WO1997033406A1 |
Attorney, Agent or Firm:
Motohiro Kurauchi
Endo Azusa
Takumi Yoshida
Taku Nakajima
Endo Azusa
Takumi Yoshida
Taku Nakajima