December 20, 2004

 

Chapter 1: Product Description

 

Table 1-4. J27 – AUX RS-232 Management Port (DTE)

 

Pin No.

Signal

Direction

 

 

1

Shield

—

 

 

 

 

 

 

 

2

Transmit Data (TD)

Out

 

 

 

 

 

 

 

3

Receive Data (RD)

In

 

 

 

 

 

 

 

6

Data Set Ready (DSR)

In

 

 

 

 

 

 

 

7

Ground (GND)

—

 

 

 

 

 

 

 

20

Data Terminal Ready (DTR)

Out

 

ETHERNET REMOTE MANAGEMENT PORTS

The BNC connector J24 (labeled 10 BASE-2), see Figure 1-10, can be used to connect the management ports of up to 32 shelves into an integrated network through a 10 BASE-2 (Thinnet) Ethernet LAN (IEEE.802.3). The rear-panel RJ-45 connector J25 (labeled 10 BASE-T), see Figure 1-10, provides a 10 BASE-2 or a 10 BASE-T (Twisted-Pair) Ethernet LAN (both IEEE.802.3 compatible).

14 -12 6 1R1

J24

J25

 

 

 

50

10 BA SE -2

AUX RS 232 DTE PO RT

2 5

10 BA SE -T

 

 

 

 

50

26

OS RS 232 P ORT

25

1

 

S PA N PAIR 1

26

CO PA IR 1

1

1 2 3 4 5

-4 8VA -4 8V B BAT RTN FGND

FUS E FUS E P INS 3 & 4

15 A MA X 15 A MAX MUS T B E BRI DGE D

1

 

25

26

CO PA IR 2

50

1

2 5

2650

S PA N PAIR 2

Figure 1-10. Multishelf Network Ports

Daisy-Chaining 10BASE-2 Connections

10BASE-2 management ports of up to x number of shelves can be hubbed together by daisy-chaining together using the included BNC-T connector. The last 10BASE-2 connection must be terminated with the included 50 ohm BNC terminator.

HEAT DISSIPATION FACTORS

The HMS-318 List 3 shelf is a 12-inch (30.48 cm) deep individual CO equipment shelf with open-faced mountings for natural convection cooling. The maximum heat dissipation for open-faced, natural convection-cooled mountings is limited to 134.7 Watts per square foot as defined in Section 4.1.4 of the NEBS standard for Physical Protection (GR-63-CORE) for all equipment placed in a CO environment.

The heat dissipation footprint of an HMS-318 List 3 shelf is approximately 5.9 square feet. Therefore, the maximum permissible heat dissipation per rack is 5.9 square feet x 134.7 Watts per square foot equals 790 Watts.

The maximum allowable heat dissipation for each telco-style equipment rack is:

• 790 watts for a 19-inch (48.3-cm) wide rack

LTPH-UM-1261-01

1-13

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ADC T1MF2S04RA, HMS-318 Ethernet Remote Management Ports, Heat Dissipation Factors, J27 AUX RS-232 Management Port DTE
Page 24 Page 26

T1MF2S04RA, HMS-318, LTPH-UM-1261-01 specifications

The ADC LTPH-UM-1261-01, HMS-318, and T1MF2S04RA are exemplary devices tailored for advanced data communications and network management. Each product is designed with unique features, technologies, and characteristics that cater to various applications in the telecommunications sector.

The ADC LTPH-UM-1261-01 is a high-performance unit that excels in low power consumption while providing reliable data integrity. Equipped with advanced error correction capabilities, this device ensures the seamless transmission of data over long distances. One of its standout features is its ability to support multiple transmission protocols, making it highly versatile for various applications. Its compact design allows for easy integration into existing systems, enabling operators to upgrade without significant infrastructure changes.

On the other hand, the HMS-318 is renowned for its enhanced connectivity options. It supports multiple interface types, including Ethernet, Serial, and Fiber optic connections, making it a highly adaptable solution for a variety of network configurations. The HMS-318 comes with built-in security features like encryption and authentication protocols, which safeguard data against unauthorized access. Additionally, its user-friendly interface makes configuration simple, allowing network managers to swiftly deploy and manage the device within their ecosystems.

The T1MF2S04RA represents the cutting-edge of telecommunications technology, particularly in the realm of T1 line functionalities. It is engineered to optimize the management of T1 circuits, facilitating efficient bandwidth allocation and monitoring. The T1MF2S04RA also features state-of-the-art diagnostic tools that provide real-time analytics, allowing operators to quickly identify and rectify issues. Its robustness ensures minimal downtime, which is critical for maintaining the reliability of telecommunication networks.

In summary, the ADC LTPH-UM-1261-01, HMS-318, and T1MF2S04RA stand out in their respective domains due to their innovative technologies and features. From enhancing data integrity to providing extensive connectivity options and advanced diagnostic capabilities, these devices exemplify the strides made in modern telecommunications. They are indispensable tools for operators seeking to enhance their network performance and reliability in a rapidly evolving technological landscape. Each product not only meets the current demands of the industry but also provides a scalable foundation for future growth.
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