| 摘要 |
<p>The present invention discloses a method and device for maintaining calls during main/standby switching of a Voice over Internet Protocol (VoIP) device. In the present invention, a media address translation unit is divided into an interior Virtual Local Area Network (VLAN) and an exterior VLAN, then a main/standby switching state is detected in real time bidirectionally; when the occurrence of the main/standby switching is detected, an original standby media address translation unit is switched from a standby state to a main state immediately, and the original standby media address translation unit is triggered to broadcast a free Address Resolution Protocol (ARP) packet through the interior VLAN and exterior VLAN; and a media resource processing unit begins to broadcast the free ARP packet through the interior VLAN of the media resource processing unit. The device for maintaining the calls during the main/standby switching of the VoIP device disclosed by the present invention includes a media address unit configuration module, a media address unit ARP packet triggering module and a media resource processing unit ARP packet triggering module. By using the scheme of the present invention, timely recovery of bidirectional voice streams can be guaranteed, thereby implementing basically lossless calls during the main/standby switching of the VoIP device.</p> |
