Cable, CompactFlash and Accessory Specifications

T3/E3 NIM Card

The T3/E3 full and sub-rate NIM, as shown in Figure A-17, is equipped with 1 Ethernet (WAN) port that supports fractional T3/E3 transmission in un-channelized or clear channel mode with BNC connectors. User data are encapsulated in HDLC packets before being sent to the line.

Figure A-17 1-Port T3/E3 NIM Card

Tx

Rx

ALARM LOS

ENABLE LOF

id

Cables required for this NIM must be 75-ohm, DS3 Type 734 or 735 coaxial. DS3 cables support a length up to 450 in length. E3 cabling supports a cable length up to 900 feet.

Un-channelized mode consists of the entire T3/E3 payload in one data path, but with T3/E3 framing bits still in place. Only one HDLC channel is used. Throughput of the un-channelized link can be limited by using only a portion of the entire payload. Various sub-rates are available to provide compatibility with major DSU equipment suppliers. Scrambling may also be enabled as required for DSU compatibility. Larscom zero suppression is supported.

Clear channel mode presents the board merely as the line driver for a link carrying HDLC packets where even framing bits are used for data transfer. The T3/E3 framer operates in bypass mode and renders the NIM a line driver. Both sides of the link must have the same setting to operate correctly in this mode.

For more details on software configuration, refer to the XSR User’s Guide.

Regulatory/Safety Compliance

The T3/E3 NIM complies with the following regulatory requirements.

E3: FCC Class B, ITU-T G.703, G.704, G823 and TBR24 for world wide approval, National Standards testing as required, and BABT Compliance United Kingdom directive 607114.

T3: FCC Class B, GR-499-CORE is the Bellcore test procedure that can be used for design validation, JATE Green Book for Japan.

XSR Getting Started Guide A-15

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Image 101
Enterasys Networks XSR-3020 manual Figure A-17 1-Port T3/E3 NIM Card

XSR-3020 specifications

Enterasys Networks XSR-3020 is a sophisticated Layer 2 and Layer 3 switch designed to meet the demands of modern networking environments. Known for its robust performance and versatility, the XSR-3020 is an ideal solution for enterprises that require high efficiency, comprehensive security, and network reliability.

This switch supports a variety of advanced technologies, making it suitable for both data center and edge deployments. One of its standout features is its scalability. The XSR-3020 can accommodate growing network demands by allowing for easy integration of additional modules. This capacity for expansion ensures that organizations can adapt their networks without the need for complete hardware replacements.

The XSR-3020 offers high-speed connectivity through its multiple gigabit Ethernet ports, providing up to 48 10/100/1000BASE-T ports in a single chassis. This high-density design optimizes the physical space and ensures that organizations can connect numerous devices simultaneously without sacrificing performance. Additionally, it supports Power over Ethernet (PoE), allowing users to power network devices, such as IP cameras and access points, directly through the switch. This feature streamlines installations and reduces the clutter of electrical wiring.

Security is a critical consideration in today’s network landscape, and the XSR-3020 addresses this need with robust security features. It incorporates advanced access control capabilities, enabling administrators to segment traffic and enforce policies effectively. The switch also supports 802.1X authentication, ensuring that only authorized devices can connect to the network.

In terms of management, the XSR-3020 is designed to simplify operations through its user-friendly interface and extensive support for management protocols. It offers native support for Simple Network Management Protocol (SNMP) and can be easily integrated with various network management systems, allowing for efficient monitoring and troubleshooting.

Another key characteristic of the XSR-3020 is its reliability. With features such as redundant power supplies and fans, the switch ensures high availability, minimizing downtime for critical applications. It is also built to withstand harsh conditions, making it suitable for diverse environments.

Overall, the Enterasys Networks XSR-3020 combines high performance, scalability, and security, making it an excellent choice for organizations looking to enhance their network infrastructure. Its comprehensive set of features positions it as a reliable backbone for any modern enterprise network, ensuring that businesses can operate efficiently and securely.