Tài liệu Thực hiện tiếng nói qua IP (P3) docx

Tài liệu Thực hiện tiếng nói qua IP (P3) docx

... as well. The following variants of SIP have emerged during the past few years: SIP-, SIP best common practice (SIP-BCP), SIPþ/SIP-T, and so on. However, SIPþ/SIP-T appears to be the most useful ... and hardware-based SIP and IP phones were available. For call routing over a large IP network, SIP may use the TRIP (telephony routing over IP, a work-in-progress in IETF’s IPTel WG, RFC 2871)...

Ngày tải lên: 15/12/2013, 05:16

Tài liệu Thực hiện tiếng nói qua IP (P2) pdf

... congestion in the network. Even though IPv4 is the most widely used version of IP in the world, the IETF is already developing the next generation of IP (IPv6, RFC 1883; the header format is shown ... legacy VoIP protocol. Figure 2-7 shows the protocol layers for real-time services like VoIP using the H.323 protocol. Other emerging VoIP protocols are IETF’s session initiation protocol (SI...

Ngày tải lên: 15/12/2013, 05:16