Appendix : Glossary 137

RCF Registration Confirm—This is a call flow message.

RISC Reduced Instruction Set Computer— Central processing unit architecture that greatly reduces processing time by having fewer, simpler instructions programmed into ROM, but allowing for complex processing by combining these simple instructions; primarily used in workstations.

RFI Radio Frequency Interface—An interface of a programmable switch matrix between the RF test instruments of a CASS RF or CNI configuration to a series of front panel bulkhead connectors.

RRAS Routing and Remote Access ServiceMicrosoft Windows NT’s (RRAS) Routing and Remote Access Service is used for terminating RAS/PPP calls on a Microsoft Windows

NT system.

RRJ Registration Reject—A registration request from an H.323 Gateway to an H.323 Gatekeeper was rejected.

RRQ Registration Request—An H.323 Gateway has requested to register with a remote H.323 Gatekeeper endpoint.

RTP Real Time Protocol—The format of the audio/voice data as it travels through VoIP.

RTS Request to Send—An RS-232 signal provided by a DTE device to a DCE device saying "I am ready when you are”. The RTS/CTS RS-232 signals are often used for flow control between a modem and serial port.

SCSI Small Computer System Interface—The way the peripherals communicate with the computer’s main processor.

SDL Signaling Data Link or Software Download

SF Super Frame—Common framing type used on T1 circuits. SF consists of 12 frames of 192 bits each, with the 193rd bit providing error checking and other functions. SF is superseded by ESF, but is still widely used. Also called D4 framing.

SCP Service Control Points—The SCP stores customer specific information for example, toll free numbers, and converts the information received from the incoming call and directs the call to its destination.

SIP Session Initiation Protocol—Provides advanced telephony services across an IP network.

SGP Signaling Gateway Platform—This is the SS7 Signaling Gateway platform. 3Com’s SS7 signaling Gateway is an intelligent service exchange node that integrates services between the circuit and packet networks to deliver significant cost savings with IMTs for voice trunk access instead of ISDN PRIs.

SLAP Signaling LAN Application Protocol—SLAP is the interface between the Total Control Chassis and the external SS7 Gateway system. It replaces the D-channel signaling that normally exists in an ISDN PRI interface. SLAP is 3Com’s proprietary software.

SSP Signaling Switch Point—Simply put, this is the telephone switch.

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3Com 5210 manual Appendix Glossary

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.