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公开(公告)号：US5991263A
公开(公告)日：1999-11-23
申请号：US722716
申请日：1996-09-30
CPC分类号： H04Q3/0079 , H04Q11/0428 , H04Q2213/13109 , H04Q2213/13141 , H04Q2213/13167 , H04Q2213/13174 , H04Q2213/13205 , H04Q2213/13209 , H04Q2213/13213 , H04Q2213/13337
摘要： A communication switching system having a plurality of switch nodes with each of the switch nodes responsive to a failure of a communication link within a group of communication links to switch active calls from channels of the failed communication link to idle channels of other communication links within the group of communication links. If no idle channels are available within the group of communication links when the communication link fails, a predefined time is waited for a channel to become idle or a new communication link to be added to the group of communication links before the active channels are abandoned. Advantageously, the switching of the active calls to idle channels occurs quickly so that only a momentary interruption of the calls occurs. The group of communication links may advantageously be a non-facility access service (NFAS) group having a combination of ISDN BRI and PRI communication links. The calls can be either voice, video, or data calls.
摘要翻译： 一种具有多个交换节点的通信交换系统，其中每个交换节点响应于一组通信链路内的通信链路的故障，以将活动呼叫从故障通信链路的信道切换到该通信链路内的其他通信链路的空闲信道 一组通信链接。 当通信链路发生故障时，如果通信链路组内没有可用的空闲信道，则在活动信道被放弃之前，等待信道变为空闲的预定义时间或添加到通信链路组的新通信链路。 有利地，活动呼叫到空闲信道的切换很快发生，从而仅发生呼叫的瞬时中断。 通信链路组可以有利地是具有ISDN BRI和PRI通信链路的组合的非设施接入服务（NFAS）组。 呼叫可以是语音，视频或数据呼叫。
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公开(公告)号：US5390242A
公开(公告)日：1995-02-14
申请号：US816359
申请日：1991-12-30
IPC分类号： H04M3/00 , H04M3/22 , H04M3/54 , H04Q3/00 , H04Q3/545 , H04Q3/66 , H04M7/00 , H04J3/12 , H04M3/42 , H04Q11/04
CPC分类号： H04Q3/0016 , H04M3/545 , H04Q2213/1307 , H04Q2213/13141 , H04Q2213/13146 , H04Q2213/13166 , H04Q2213/13176 , H04Q2213/13217 , H04Q2213/13383
摘要： Routing calls using a new protocol message which is a redirect message in a telecommunication system having a number of switching nodes to avoid circular paths among the switching nodes and for rerouting calls in the event of failures or overload conditions. During the establishment of a call from an originating switching node to a destination switching node where the call path has already been setup from the originating switching node through an intermediate switching node, a switching node is responsive to a setup message from the intermediate switching node requesting extension of the call path through the switching node to determine if such an extension would create a circular path. If circular path would be created, the switching node redirects the call (by using the redirect message) back to the intermediate switching node and indicates in that message to which switching node the call path should be extended. In response to the redirect message, the intermediate switching node reroutes the call path. Further, the redirect message entirely removes the call path between the switching node and intermediate switching node.
摘要翻译： 在具有多个交换节点的电信系统中使用作为重定向消息的新协议消息来路由呼叫，以避免交换节点之间的循环路径以及在发生故障或过载条件的情况下重新路由呼叫。 在从起始交换节点到目的地交换节点的建立呼叫路径已经通过中间交换节点从起始交换节点建立呼叫路径的呼叫中，交换节点响应来自中间交换节点的建立消息，请求 通过交换节点扩展呼叫路径，以确定这样的扩展是否会创建一个循环路径。 如果创建循环路径，交换节点将呼叫（通过使用重定向消息）重定向到中间交换节点，并在该消息中指示该消息，呼叫路径应该被扩展到哪个交换节点。 响应于重定向消息，中间交换节点重新路由呼叫路径。 此外，重定向消息完全去除了交换节点和中间交换节点之间的呼叫路径。
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公开(公告)号：US5386466A
公开(公告)日：1995-01-31
申请号：US816360
申请日：1991-12-30
CPC分类号： H04Q3/0062 , H04Q3/54516 , H04Q2213/13097 , H04Q2213/13107 , H04Q2213/13109 , H04Q2213/13141 , H04Q2213/13209 , H04Q2213/13353 , H04Q2213/13383 , H04Q2213/13535
摘要： A communication switching system having a plurality of switching nodes in which each switching node upon initialization completely establishes its own internal configuration. This establishment of internal configuration includes the number and type of switching modules and within each switching module: type of module control processor, type of internal switching network, printed board carriers, type and number of auxiliary circuits, and type and number of link interfaces. Each unit of a switching module reports relevant information to the module control processor; and in turn, the module control processor reports its own information and the information of the other units to a node processor (the main processor within a switching node). Further, each switching node and interfaces of the switching node automatically identifies the other switching nodes connected by communication links and switching paths to those switching nodes. Each interface upon being initialized automatically performs low level initialization operations over the connected link with the far end interface. The interfaces then report the completion of the initialization operations to the connected switching nodes. Upon receiving these reports, each switching node becomes aware of the existence of the links to other switching nodes. Each switching node then exchanges node numbers with the far end switching node connected via interfaces and communication links to establish the hierarchy of switching nodes in the switching system.
摘要翻译： 具有多个交换节点的通信交换系统，其中初始化时的每个交换节点完全建立其自己的内部配置。 内部配置的建立包括交换模块的数量和类型，以及每个交换模块内的模块控制处理器的类型，内部交换网络的类型，印刷电路板载体，辅助电路的类型和数量以及链路接口的类型和数量。 交换模块的每个单元向模块控制处理器报告相关信息; 依次，模块控制处理器向节点处理器（交换节点内的主处理器）报告其自己的信息和其他单元的信息。 此外，交换节点的每个交换节点和接口自动识别通过通信链路连接的其他交换节点和到那些交换节点的切换路径。 初始化后的每个界面都会自动执行与远端界面的连接链路的低级初始化操作。 然后，接口向所连接的交换节点报告初始化操作的完成。 在接收到这些报告时，每个交换节点都知道存在到其他交换节点的链路。 每个交换节点然后与经由接口和通信链路连接的远端交换节点交换节点号，以建立交换系统中交换节点的层次。
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4.发明授权
公开(公告)号：US5159594A
公开(公告)日：1992-10-27
申请号：US636528
申请日：1990-12-31
CPC分类号： H04Q11/0428 , H04Q2213/13106 , H04Q2213/13176 , H04Q2213/13209 , H04Q2213/1322 , H04Q2213/13367 , H04Q2213/13384 , H04Q2213/13396
摘要： An apparatus for establishing a flexible rate interface (FRI) link on a standard ISDN link. The FRI link has its own signaling channel that is distinct from the signaling channel of the standard ISDN link, and the signaling channel of the FRI link is transparent to intervening switching systems. There are no geographical restrictions on a FRI link. The signaling channel of a FRI link may be established by designating a B channel of a standard link, by using a logical link of a D channel of a standard ISDN link, or by using standard ISDN user information transport facilities to communicate the signaling channel. FRI transport channels are B channels of a standard ISDN link or subchannels of a B channel.
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公开(公告)号：US5185742A
公开(公告)日：1993-02-09
申请号：US636522
申请日：1990-12-31
CPC分类号： H04Q11/0428
摘要： A remote telecommunication terminal providing telecommunication functions identical to those functions provided by local telecommunication terminal directly connected to a telecommunications system via a direct standard link using a standard protocol. The remote telecommunication terminal is interconnected to the telecommunication system through an intervening switching system such as the public telephone network. One such remote telecommunication terminal is a remote telemarketing terminal. A remote telemarketing terminal cooperates with the telemarketing system to establish a virtual interface on the telemarketing system. The telemarketing system views this virtual interface as being identical to a physical interface such as one connected to a local telemarketing terminal via a standard link. The remote telemarketing terminal then establishes a virtual link between itself and the virtual interface on the telemarketing system. The virtual link is established on transport channels of standard links that interconnect the remote telemarketing terminal to the switching system and from the switching system to the telemarketing system. The switching system is unaware of the establishment of a virtual link on these transport channels and does not respond to signaling information on a virtual signaling channel of the virtual link.
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6.发明授权Establishment of a flexible rate interface link to restore channels from a failed communication link 失效建立灵活的速率接口链路，以从故障通信链路恢复通道
公开(公告)号：US5828652A
公开(公告)日：1998-10-27
申请号：US722715
申请日：1996-09-30
CPC分类号： H04Q11/04 , H04Q2213/13109 , H04Q2213/13141 , H04Q2213/13145 , H04Q2213/13167 , H04Q2213/13205 , H04Q2213/13209 , H04Q2213/13332 , H04Q2213/13352 , H04Q2213/1338
摘要： In a telecommunication switching system having a plurality of switch nodes with each of the switch nodes responsive to a failure of a communication link within a group of communication links to establish a flexible rate interface (FRI) link upon there being no spare channels within the group of communication links and to switch active calls from the channels of the failed communication link to the channels of the newly established FRI link. Advantageously, the group of communication links can be a non-facility access service (NFAS) group. Advantageously, this allows for additional B channels to be added to the NFAS group even though there are no remaining physical communication links between the two switch nodes being interconnected by the NFAS group. The establishment of the FRI link allows for the addition of B channels to the NFAS group with these B channels being routed through other switch nodes of the communication switching system. The FRI link becomes part of the NFAS group and control is provided for the B channels of the FRI link by the primary D channel of the NFAS group. Advantageously, the FRI link can be set up through other communication facilities other than the communication switching system. For example, if the two switch nodes interconnected by the NFAS group are both connected to the public telephone network, the FRI link can be set up through the public telephone network.
摘要翻译： 在具有多个交换节点的电信交换系统中，每个交换节点响应于一组通信链路内的通信链路的故障，以在组内没有备用信道时建立灵活的速率接口（FRI）链路 的通信链路，并且将来自故障通信链路的信道的活动呼叫切换到新建立的FRI链路的信道。 有利地，该组通信链路可以是非设施接入服务（NFAS）组。 有利的是，即使在由NFAS组互连的两个交换节点之间没有剩余物理通信链路的情况下，也可以将额外的B信道添加到NFAS组。 建立FRI链路允许向NFAS组添加B信道，这些B信道通过通信交换系统的其他交换节点路由。 FRI链路成为NFAS组的一部分，并且通过NFAS组的主D信道为FRI链路的B信道提供控制。 有利地，FRI链路可以通过除了通信交换系统之外的其他通信设施来建立。 例如，如果由NFAS组互连的两个交换机节点都连接到公共电话网络，则FRI链路可以通过公共电话网络建立。
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公开(公告)号：US5416834A
公开(公告)日：1995-05-16
申请号：US816363
申请日：1991-12-30
IPC分类号： H04M3/42 , H04M1/57 , H04M3/54 , H04N1/327 , H04Q3/00 , H04Q3/70 , H04Q11/04 , H04J3/12 , H04M11/00
CPC分类号： H04N1/327 , H04M3/54 , H04Q11/0435 , H04Q3/0016 , H04Q3/0029 , H04M1/57 , H04M2242/22 , H04M3/42059 , H04Q2213/13282 , H04Q2213/13541 , H04Q3/70 , Y10S379/902
摘要： A telecommunication protocol message that allows redirection of a call received by a first telephone station set to a second telephone station set or other terminal equipment by the first telephone station set transmitting the redirect message to a telecommunication system connected to the first telephone station set. The redirect message includes the identification of the user of the first telephone station set as well as the telephone number of the second telephone station set or terminal equipment. The telecommunication switching system is responsive to the redirect message to reroute a call to the second telephone set. The redirect message allows the first station set to transmit only one message to the telecommunication switching system to accomplish the functions of rerouting the call. In addition, the redirect message gives a BRI (basic rate interface) station set the capability of automatically forwarding certain types of calls. Since a call setup message includes the telephone number of the originating station set, the BRI station set can be programmed to transfer calls to different station sets based on the originating station number. In addition, with the proliferation of facsimile machines (often referred to as FAXs), there is a problem in coordinating an individual's telephone number with the individual's FAX number by a person wishing to send a FAX. Using the redirect message, the BRI station set can be programmed to examine the bearer capability information encoded as an Information Element, IE, in the setup message to determine the type of call that is being set up. If a digital data call is being set up, the BRI station set then examines the higher layer capability IE in the setup message to determine whether or not it is a FAX message. If it is a FAX message, the BRI station set will automatically forward the call to the FAX designated by the user of the BRI station set. Further, the station set will display a message indicating that a FAX message had been forwarded. Using this technique it is only necessary to know a person's telephone number in order to send a FAX to that person.
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8.发明授权
公开(公告)号：US5377262A
公开(公告)日：1994-12-27
申请号：US816362
申请日：1991-12-30
CPC分类号： H04Q3/0062 , H04Q3/66 , H04Q2213/13097 , H04Q2213/13107 , H04Q2213/13138 , H04Q2213/13141 , H04Q2213/13176 , H04Q2213/13352 , H04Q2213/13353 , H04Q2213/1338 , H04Q2213/13383 , H04Q2213/13541
摘要： A telecommunication switching system having switching nodes that perform adaptive routing by utilizing the fact that the switching nodes are arranged in a first and a second hierarchy. In addition, each switching node maintains routing information based on telephone and switching node numbers which identify the switching nodes. A destination switching node transfers its routing information back to an originating switching node which combines that routing information with its own in order to determine shorter call paths for subsequent call routing. The first hierarchy is a dialing plan hierarchy having groups of switching nodes at each dialing plan level. The second hierarchy is a switching node hierarchy based on the switching node number of each switching node with at least one switching node of the switching node hierarchy being at a different level in the dialing plan hierarchy. In order to route a call, a switching node first routes through levels of switching nodes in the dialing plan hierarchy until a second switching node is encountered which can determine the identification of the destination switching node based on a dialed telephone number. The second switching node then routes the call through the node hierarchy using the identified node number until a path is determined to the destination switching node.
摘要翻译： 一种电信交换系统，其具有通过利用交换节点布置在第一和第二层次中的事实来执行自适应路由的交换节点。 另外，每个交换节点基于标识交换节点的电话和交换节点号来维护路由信息。 目的地交换节点将其路由信息传送回发起交换节点，该起始交换节点将该路由信息与其本身交换节点相结合，以确定用于后续呼叫路由的较短呼叫路径。 第一层次是具有每个拨号计划级别的交换节点组的拨号计划层次。 第二层次是基于每个交换节点的交换节点号的交换节点层次，其中交换节点层级的至少一个交换节点在拨号计划层次中处于不同的级别。 为了路由呼叫，交换节点首先路由拨号计划层级中的交换节点的级别，直到遇到可以基于拨打的电话号码确定目的地交换节点的标识的第二交换节点。 然后，第二交换节点使用所识别的节点号码将呼叫路由到节点层次结构，直到确定到目的地交换节点的路径为止。
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9.发明授权
公开(公告)号：US5375167A
公开(公告)日：1994-12-20
申请号：US816361
申请日：1991-12-30
CPC分类号： H04Q3/0062 , H04Q3/0016 , H04Q2213/13535 , H04Q2213/13541
摘要： A system for distributing a numbering plan to switching nodes which are organized in a dialing plan hierarchy and for allowing an individual switching node to redistribute blocks of numbers to other switching nodes upon requests from those switching nodes to own the requested blocks of numbers. Further, the dialing plan hierarchy is automatically established upon system initialization with each switching node determining its position in that hierarchy. In addition, a switching node that needs to use only one number of a block owned by another switching node can request permission from the other switching node to use that telephone number for a telephone connected to the switching node. Such a use is referred to as hosting the telephone number. Hosting allows a telephone connected to one switching node to have a telephone number owned by another switching node and eliminates the constraint of requiring every telephone connected to a switching node to use a number from the block of numbers own by that switching node.
摘要翻译： 一种用于将编号计划分配给组织在拨号计划层级中的交换节点的系统，并且用于允许各个交换节点根据来自那些交换节点的请求向其他交换节点重新分配数字块以拥有所请求的号码块。 此外，拨号计划层次结构在系统初始化时自动建立，每个交换节点确定其在该层级中的位置。 此外，仅需要使用另一个交换节点拥有的块的一个数量的交换节点可以请求来自另一个交换节点的许可，以使用该电话号码用于连接到交换节点的电话。 这种用途被称为托管电话号码。 主机允许连接到一个交换节点的电话具有由另一个交换节点拥有的电话号码，并且消除了要求连接到交换节点的每个电话使用由该交换节点拥有的号码块的号码的约束。
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公开(公告)号：US5182751A
公开(公告)日：1993-01-26
申请号：US636521
申请日：1990-12-31
CPC分类号： H04Q11/0428
摘要： A switching architecture with identical switching nodes having a topology which allows for multiple paths between any two endpoint switching nodes without intervening switching nodes being involved in call control on those paths. This architecture is made feasible by a new type of link, the flexible rate interface (FRI) link. The FRI link has its own signaling channel distinct from the signaling channel of a standard link and is transparent to intervening switching nodes. Only endpoint switching nodes are aware of the existence of the FRI link with respect to call control. A standard protocol is utilized on the signaling channels of both the standard link and the FRI link. Advantageously, the standard link may be an ISDN link and the standard protocol may be the ISDN protocol. An FRI signaling channel of the FRI link may be established by using any of the following: a B channel of a standard ISDN link, standard ISN user information transport facilities, or a logical link of a D channel of a standard ISDN link. In combination with the FRI signaling channel, the FRI link may utilize B channels from a number of standard ISDN links for FRI B channels.
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