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The air interface of a cellular network is at layers 1 and 2 of the OSI model; at layer 2, it is divided into multiple protocol layers. In UMTS and LTE, those protocols are the Packet Data Convergence Protocol (PDCP), the Radio Link Control (RLC) protocol, and the MAC protocol. The base station has absolute control over the air interface and ...
The Mac II had eight 30-pin SIMMs, and memory was installed in groups of four (called "Bank A" and "Bank B"). The original Macintosh II did not have a PMMU by default. It relied on the memory controller hardware to map the installed memory into a contiguous address space. This hardware had the restriction that the address space dedicated to ...
Multiple Access with Collision Avoidance for Wireless (MACAW) [1] is a slotted medium access control (MAC) protocol widely used in ad hoc networks. [2] Furthermore, it is the foundation of many other MAC protocols used in wireless sensor networks (WSN). [2] The IEEE 802.11 RTS/CTS mechanism is adopted from this protocol.
This is changing with the adoption of utilities such as NetworkManager and wicd that allow users to automatically switch between networks, without root access or command-line invocation of the traditional wireless tools. But some distributions include a large number of preinstalled drivers, like Ubuntu. FreeBSD has Wi-Fi support similar to Linux.
ProTERM is a terminal emulator and modem program for the Apple II [1] [2] and Macintosh lines of personal computers, published by Intrec Software.Most popular in the late 1980s and 1990s, it was most commonly used for calling bulletin board systems (BBSes) via a computer's modem, experienced users could also Telnet into Unix server and shell account thereon and FTP and tunneling to various ...
An AirPort Extreme 5th generation Historical development of some wireless router chipset variants. AirPort Extreme is a line of residential gateways made by Apple Inc. that combine the functions of a router, network switch, wireless access point and NAS as well as varied other functions.
2. Click the Network icon. 3. Click the Location drop-down menu to open it, and then select New Location by clicking it. 4. In the Name your new location box, type Test, and then click OK. 5. Click the PPP tab. 6. In the Telephone Number box, type a local access number, and then click Apply Now. 7. On the menu bar, click the phone icon, and ...
The Apple USB Modem supports V.92, Caller ID, wake-on-ring, telephone answering (V.253), and modem on hold. The modem is manufactured by Motorola. A device driver for the modem was introduced with Mac OS X version 10.4.3. It retailed for US$49 at the time of its introduction.