| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve a problem that a conventional VOIP gateway cannot use an additional function of a PBX because connection between relay trunks of the PBX is not 1:1. SOLUTION: Each identification pattern insertion section 108 of VOIP(Voice Over IP) gateways 11, 12 inserts a prescribed recognition pattern to each output signal. A pass-through frame assembly section 104 adds an ineffective signal and a pass-through frame processing section 111 excludes the ineffective signal. When an identification pattern detection section 109 detects an identification pattern, selection circuits 113, 106 bypass a jitter buffer 103, an RTP(Real-time Transport Protocol) packet disassembly section 101, a voice decoding section 105, a voice coding section 110 and an RTP packet assembly section 112.</p> |
