A caller first locates the appropriate server, then sends a SIP request (probably an invite). In a perfect world, the request arrives at its destination, where the client accepts the call by returning a SIP response code 200.
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美
- 呼叫首先確定適當的服務(wù)器,然后發(fā)出SIP請求(很可能是一個(gè)邀請),在一個(gè)完美的世界中,此請求到達其目的地,在此客戶(hù)機通過(guò)返回SIP應答代碼200表示接受此通話(huà)。