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Applies to V.35–V.39. V.35 is an ITU-T standard located on layer 1 on the OSI model. Max speed is 2 Mbit/s and synchronous only. Withdrawn ITU-T recommendation for 48 kbit/s data transmission over wideband circuits. The physical and electrical characteristics of this interface are now specified in ITU-T recommendation V.11.
This communication is done via an Ethernet crossover cable as opposed to a PC to DCE (hub, switch, or bridge) communication which is done via an Ethernet straight cable. V.35 is a high-speed serial interface designed to support both higher data rates and connectivity between DTEs (data-terminal equipment) or DCEs (data-communication equipment ...
In network topology, a cable modem is a network bridge that conforms to IEEE 802.1D for Ethernet networking (with some modifications). The cable modem bridges Ethernet frames between a customer LAN and the coax network. Technically, it is a modem because it must modulate data to transmit it over the cable network, and it must demodulate data ...
User at modem A issues a dial command: AT-Get the modem's ATtention; D-Dial; T-Touch-Tone; 12125550100-Call this number RING: Modem A begins dialing. Modem B's phone-line rings, and the modem reports the fact. ATA: Computer at modem B issues answer command. CONNECT: CONNECT: The modems connect, and both modems report "connect".
The modem connected to the card used a 15-pin D-shell connector—which exactly matched the PC's game connector. Both models were powered by the PC. The new modem was frequency agile, with a configuration utility that ran on the PC to set up US and DS frequencies. The option to configure the card's MAC address was soon dropped. However, the ...
Cable runs of up to 1,500 m (4,900 ft) are supported, although IBM documents routinely stated the maximum supported coax cable length was 2,000 ft (610 m). [ 7 ] [ 8 ] Originally devices were equipped with BNC connectors , which later was replaced with special so-called DPC – Dual Purpose Connectors supporting the IBM Shielded twisted pair ...
The Model 35 interface will accept DC current (20 ma or 60 ma). An optional modem interface provides for operation over voice-grade channels. The modem transmits asynchronously in serial format, compatible with Bell System 101, 103 and 113 data sets or their equivalent. The Teletype Model 35 ASR is 38.5 inches high, 40 inches wide and 24 inches ...
In this way, the modem could be instructed by the computer to perform various operations, such as hang up the phone or dial a number. The modem would normally start-up in command mode. The problem was how to move from mode to mode. One option would be to signal this using one of the many pins in the RS-232 cable.