| 单词 | V Series |
| 释义 | V Series Table V-3: Selected ITU-T V-Series Recommendations (continued) Recommendation Number Description V.61 4800 bps simultaneous voice plus data modems, with optional automatic switch- ing to 14.4 kbps data-only signaling rates of up to 14 400 bit/s for use over dial- up PSTN circuits and point-to-point two-wire leased lines V.90 56 kbps downstream and 33.6 kbps upstream digital and analog modem pairs for use over dial-up PSTN circuits V.91 64 kbps digital modems for use over four-wire circuit-switched connections and point-to-point leased four-wire digital circuits V.92 Enhancements to Recommendation V.90 V.110 Support by an ISDN of DTE with V-Series type interfaces V.120 Support by an ISDN of DTE with V-Series type interfaces with provision for statis- tical multiplexing V.130 ISDN terminal adaptor framework V.140 Procedures for establishing communication between two multiprotocol audiovi- sual terminals using digital channels at a multiple of 64 kbps or 56 kbps V.150.0 Modem-over-IP networks: Foundation V.150.1 Modem-over-IP networks: Procedures for the end-to-end connection of V-series DCE V.151 Procedures for end-to-end connection of analog PSTN text telephones over an IP network utilizing text relay V.152 Procedures for supporting voice-band data over IP networks V.300 A 128 (144) kbps DCE for use on digital point-to-point leased circuits |
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