公开(公告)号：EP0966145A2

公开(公告)日：1999-12-22

申请号：EP99870128.8

申请日：1999-06-21

Applicant: Nortel Networks Corporation

Inventor： Brivet, Mayeul ,  Tripps, John ,  Aubry, Isabelle c/o Nortel Europe S.A.

IPC: H04M7/00 ,  H04L12/66

CPC classification number: H04L65/104 ,  H04L65/103 ,  H04L65/80 ,  H04M7/006 ,  H04M7/0072 ,  H04M7/125 ,  H04M15/55 ,  H04M2215/2046

Abstract: The present invention provides an IP telephony gateway. According to a first aspect of the invention, the gateway provides communications between a switched circuit network (SCN) and an IP network. The gateway can handle calls between clients on the switched circuit network and IP clients on the IP network. The gateway provides supplementary call services/features for calls to/from IP clients on the IP network, thus providing IP clients with similar features to those that are available to terminals on a PBX. The gateway is preferably a PBX which supports the supplementary services/features.
Advantageously, the gateway can also provide supplementary call services/features to calls between IP clients on the IP network. This can be achieved by routing call control signaling for IP client - IP client calls via the gateway where the services can be controlled.
A further aspect of the invention provides an IP network in which IP clients have access to a range of supplementary call features/services. At least one of the supplementary features/services is provided by a gateway, such as a PBX, at an interface to the IP network. A call from an lP client is routed via the gateway to apply the supplementary feature/service.

Abstract translation: 本发明提供一种IP电话网关。 根据本发明的第一方面，网关提供交换电路网络（SCN）和IP网络之间的通信。 网关可以处理交换电路网络上的客户端和IP网络上的IP客户端之间的呼叫。 网关为IP网络上的IP客户端的呼叫提供补充呼叫服务/功能，从而为IP客户端提供与PBX上的终端可用的功能相似的功能。 网关优选地是支持补充业务/特征的PBX。 有利地，网关还可以向IP网络上的IP客户端之间的呼叫提供补充呼叫服务/特征。 这可以通过路由用于IP客户端的呼叫控制信令 - 通过可以控制服务的网关的IP客户端呼叫来实现。 本发明的另一方面提供一种IP网络，其中IP客户端可以访问一系列补充呼叫特征/服务。 至少一个补充特征/服务由诸如PBX的网关在IP网络的接口处提供。 通过网关路由来自lP客户端的呼叫以应用补充特征/服务。

公开(公告)号：EP0926909A3

公开(公告)日：2000-05-10

申请号：EP98202566.0

申请日：1998-07-30

Applicant: NORTEL NETWORKS CORPORATION

Inventor： Brivet, Mayeul ,  Conan, Loic

IPC: H04Q3/00 ,  H04M3/42

CPC classification number: H04Q3/0029 ,  H04M3/42

Abstract: The present invention provides an enhanced protocol converter which may be configured as a network element (210), e.g. a digital switch (210), a node of the system or a digital private exchange. The network element is for use in a telecommunications network which supports at least one supplementary service (SS1, SS2, SS3) and which includes a node, a message associated with a supplementary service (SS2) being transmittable within the network including an information element in a first format which is incompatible with the node, and a message associated with a supplementary service (SS3) being transmittable within the network including an information element in a second format compatible with the node. The network element (210) examines the messages and determines if the format of an information element therein is compatible with the next node. If it is, the message is transmitted transparently. If not, the format is changed to the appropriate format for the next node and for the relevant supplementary service.