Panasonic CF-27******M-ADS, CF-27******M-RAM Cellular Digital Packet Data Cdpd Network Technology

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Network Information (cont.)

Cellular Digital Packet Data (CDPD) Network Technology

The Cellular Digital Packet Data (CDPD) network is a two-way wireless data communication system. This system uses cellular telephone channels to transfer data seamlessly from a mobile end system to a fixed end system. CDPD operates within the already existing cellular telephone infrastructure utilizing the idle time that exists on cellular voice channels to send small packets of data, called datagrams, to a designated receiver. Researchers estimate that over 30% of a cellular channel’s airtime is idle, even during heavy traffic.

The CDPD system sends signals down the various cellular channels to locate an open channel. This process is called “sniffing”. Once the CDPD system has located an open channel, the modem begins to send datagrams over that channel to the designated end user. In order that this process does not interfere with the cellular phone transmissions, the CDPD system has regulated channel “hops” to ensure that CDPD usage will not block a cellular voice channel for an extended period of time. Also, if a voice channel is activated, the CDPD system detects this voice message and automatically “hops” to the next available idle channel. This process is quite complex. However, the user need not be aware of this process. The CDPD system manages the routing of the individual data packets to the proper destination. On a basic level, the CDPD network operates like any other computer network with the exception that the CDPD mobile end system is free to roam wirelessly and conduct network operation from other locations using the network of cellular carriers. The CDPD network is made up of a series of cellular networks which are operated by various cellular carriers. These cellular carriers provide the user with network management as well as application services. To increase user security, carriers use forward error correction, authentication, and encryption. The cellular carrier is responsible for all accounting services for the CDPD service. The user selects the CDPD carrier service with which to operate by registering with an individual carrier. Generally, an area will have two cellular carriers that provide CDPD service. The user may sign up with either of the two carriers.

CDPD technology provides many benefits to the user including the following: CDPD is cost-effective. By compressing data before sending it over the cellular channels, CDPD cuts down the amount of data to be transmitted, and thus, reduces the cost of cellular usage. Another cost-reducing advantage of CDPD is that the user is only charged for the data transmitted, not for the airtime used. And by using the existing cellular infrastructure currently in place for the voice network, CDPD has few start-up expenditures which further reduces cost to the user. CDPD is fast. At 19,200 bps, it is one of the fastest wide-area data networks. CDPD is mobile. It allows free travel between cell cites. The CDPD system automatically tracks the user’s position and allows the user to maintain communication between cell cites. CDPD is reliable. It utilizes error correction applications for dependable data delivery.

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Contents Operating Instructions Disclaimer Trademarks IntroductionFCC Class B Part For U.S.AHandling User PrecautionsUsage Front Panel Description DescriptionT. Antenna External Antenna ConnectorRing Resume FeaturesCardBus Controller a Plug-n-Play and Non Plug-n-Play settingsDataTAC Network Technology for the Ardis Network Network InformationMobitex Network Technology for the RAM Network Cellular Digital Packet Data Cdpd Network Technology Computer does not recognize the wireless modem TroubleshootingWireless modem does not power on Description SpecificationsFor Ardis Network / CF-27xxxxxxM-ADS For Mobitex Network / CF-27xxxxxxM-RAM Pcca STD For Cdpd Network / CF-27xxxxxxM-CDPLimits and Exclusions WarrantyPanasonic Personal Computer Company Ppcc Limited Warranty Page Name of Dealer Date of Purchase

CF-27******M-ADS, CF-27******M-CDP, CF-27******M-RAM specifications

The Panasonic CF-27 series represents a robust line of rugged laptops designed for professionals who require durability, reliability, and advanced technology in challenging environments. This laptop series is renowned for its resilience, offering features tailored to meet the demands of fieldwork in various industries, including law enforcement, healthcare, and construction.

One of the standout models, the CF-27******M-RAM, is equipped with a powerful RAM configuration that enhances multitasking and overall performance. With this model, users can manage multiple applications simultaneously without experiencing lag or interruptions. This is particularly beneficial for professionals who rely on data-intensive applications while on the job, ensuring seamless workflow and efficiency.

Working alongside the CF-27******M-RAM is the CF-27******M-CDP, which emphasizes comprehensive connectivity options. This laptop comes equipped with various ports, including USB, Ethernet, VGA, and serial ports, allowing users to connect to an array of peripherals and external devices. The CF-27******M-CDP facilitates easy integration into existing work environments, providing the flexibility needed for various tasks.

Another essential aspect of the CF-27 series is represented by the CF-27******M-ADS, which highlights advanced functionality in data security and storage. This model features cutting-edge security protocols and technologies designed to protect sensitive information. The inclusion of features such as a fingerprint reader and smart card support ensures that only authorized users gain access to critical data, making it an ideal solution for industries that prioritize data confidentiality.

In terms of build quality, the CF-27 series is engineered to withstand harsh conditions. With a magnesium alloy chassis, the laptops are both lightweight and exceptionally sturdy. Additionally, the CF-27 laptops are typically tested against MIL-STD 810G standards, which confirm their resistance to shocks, vibrations, and extreme temperatures. The spill-resistant keyboard adds another layer of protection, making these laptops suitable for use in environments where spills and dirt might pose a risk.

The CF-27 series laptops also feature a bright, sunlight-readable display, ensuring visibility under various lighting conditions, a critical factor for those working outdoors. Battery life is optimized to support prolonged use, reducing downtime between charges and enhancing productivity.

In summary, the Panasonic CF-27 series, specifically the CF-27******M-RAM, CF-27******M-CDP, and CF-27******M-ADS models, offers a unique combination of performance, connectivity, and durability. They are perfectly equipped to handle the rigors of demanding work environments, making them an excellent choice for professionals seeking reliability and advanced technology in their computing solutions.
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