130APPENDIX : GLOSSARY

CD Collision Detection—A process where a simultaneous transmission has taken place. Workstations can determine if this has happened if they do not receive an acknowledgement from the receiving station within a certain amount of time. When this occurs, the workstation will try again.

CDR Call Detail Record—Information gather during the call used later for billing purposes.

CE Connection Endpoint—A terminator at one end of a layer connection within SAP.

CEPT Conférence des administrations Européenes des Postes et Télécommunications (European Conference of Postal and Telecommunications Administrations)—A standards committee in Europe for the telecommunications industry.

CHS Cylinder-head Sector—The method of identifying a given location on a hard drive. CISPR International Special Committee on Radio Interference

CLI Command Line Interface—A software interface allowing the user to interact with the operating system by entering commands and optional arguments. The UNIX operating system runs at the command line from a shell prompt or a shell script.

CMOS Complementary Metal Oxide Semiconductor

CNG Comfort Noise Generation—The process of adding white noise to the voice channel so the people know the connection is still good when neither party is talking.

CO Central Office—The telephone company facility where the request for service comes through the switching equipment and the requests for service gets routed.

CommWorks IP A total system of hardware and software components that route telephone calls Telephony System and data over an IP based network (VoIP).

CPE Customer Presence Equipment—A piece of equipment that is attached to a telephone network. This equipment would be the terminal equipment, telephones, key systems, modems, video conferencing devices and so on.

CPU Central Processing Unit—The part of the computer that executes the commands and performs the logic.

CRC Cyclic Redundancy Check—The process to determine if the data was received properly.

CSA 1. Call Path Services Architecture—An architecture developed by IBM which defines the protocols that allow communications between the telephones switches and computers. 2. Carrier Serving Area—A method used to categorize the local loops by length, gauge, and subscriber distribution for maximum service and cost efficiency.

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3Com 5210 manual Appendix Glossary
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5210 specifications

The 3Com 5210 is a robust and reliable networking switch designed to meet the demands of modern IT environments. Aimed at businesses looking for a balance of performance and manageable costs, the 5210 series provides essential features that cater to the needs of various industries.

One of the standout features of the 3Com 5210 is its support for high-performance switching. With a switching capacity of up to 104 Gbps, the device is built to handle a significant amount of data traffic, making it suitable for environments with heavy workloads. Coupled with a forwarding rate of 77.4 million packets per second, the 5210 guarantees minimal latency, ensuring that data is transmitted swiftly and efficiently across the network.

The 5210 switch supports Layer 2 and Layer 3 switching, allowing for flexibility in network design and operational efficiency. The Layer 3 functionality enables IP routing, facilitating better traffic management and segmentation across IP networks. This is particularly useful for organizations looking to optimize their network performance and ensure efficient load distribution.

In terms of security, the 3Com 5210 incorporates advanced features designed to protect enterprise networks from potential threats. The switch supports VLANs, which help in segmenting network traffic, along with port security features to minimize unauthorized access. Moreover, it provides access control lists (ACLs) that allow administrators to define rules for data transmission, enhancing overall security.

The device is also equipped with Quality of Service (QoS) capabilities, which prioritize different types of traffic to ensure that critical applications receive the bandwidth they require. This is crucial for businesses that rely on voice over IP or video conferencing, as it ensures clear and uninterrupted communication.

Management and monitoring are simplified via a user-friendly web interface, allowing network administrators to configure settings, monitor traffic, and troubleshoot issues easily. The switch supports Simple Network Management Protocol (SNMP), enabling remote management and ensuring that IT teams can respond to problems without being physically present at the location.

The 3Com 5210 is characterized by its reliability and durability. Built with robust hardware components, the switch is designed for continuous operation, suitable for both small offices and larger enterprise networks. With its combination of performance, security, and manageability, the 3Com 5210 stands out as a valuable asset for organizations aiming to enhance their networking capabilities.
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