公开(公告)号：WO2008080225A1

公开(公告)日：2008-07-10

申请号：PCT/CA2007/002375

申请日：2007-12-28

Applicant: NATURAL CONVERGENCE INC. ,  STRICKLAND, David, Peter ,  MOUBARAK, Michel ,  BUCKINGHAM, Ronald, Brett ,  BORBA, Ricardo

Inventor： STRICKLAND, David, Peter ,  MOUBARAK, Michel ,  BUCKINGHAM, Ronald, Brett ,  BORBA, Ricardo

IPC: H04L29/06 ,  H04L12/66 ,  H04M11/06 ,  H04Q3/64

CPC classification number: H04L61/2578 ,  H04L61/2564 ,  H04L61/2585 ,  H04L61/2589 ,  H04L65/1033 ,  H04L65/105 ,  H04L65/608 ,  H04L67/2823

Abstract: A solution for the Network Address Translation (NAT) traversal problem for Real Time Protocol (RTP) is provided, which uses an RTP Proxy (e.g., a Session Border Controller (SBC)), instead of being logically located between the NAT and the Feature Server (FS), but instead, for devices which use a protocol unsupported by the SBC, having these devices first signal the Feature Server, which determines whether and how an RTP proxy should be invoked. An RTP proxy should be invoked by the FS if Both endpoints (e.g., devices) are behind different NATs (or one of the endpoints is behind a NAT and the other is not) and neither of the endpoints are already signaled through an RTP proxy. For example, the SBC is interposed (at least logically) between the Feature Server and other shared components.

Abstract translation: 提供了用于实时协议（RTP）的网络地址转换（NAT）遍历问题的解决方案，其使用RTP代理（例如，会话边界控制器（SBC）），而不是逻辑地位于NAT和特征之间 服务器（FS），而是对于使用SBC不支持的协议的设备，使这些设备首先发信号通知功能服务器，该服务器决定是否以及如何调用RTP代理。 如果两个端点（例如，设备）都位于不同的NAT（或者一个端点在NAT后面，而另一个端点不在NAT之后），则FS代理应由FS调用，并且这两个端点都没有通过RTP代理发出信号。 例如，SBC被插入（至少在逻辑上）在功能服务器和其他共享组件之间。