Connecting to Power

Connecting a Modem to the COM Port

To connect a modem to the COM port:

1Determine and procure the proper DCE cable type for your modem. The COM port requires an RJ45-type plug connector. The other connector depends on the serial port on your modem. The connection requires an EIA-232E crossover (null modem) cable or adapter. See DB9 to RJ45 Adapter Pinouts in Appendix A, Connectors and Pin Assignments.

2Connect the modular plug connector of your cable to the COM port socket.

3Connect the other end of the cable or adapter to the serial port of your modem.

Connecting to Power

The 4900 Series DSLAM is powered by a nominal –48 VDC source. Dual power feeds are provided for redundancy. The terminal block accepts 18 to 14 AWG wire.

The DC power terminal block on the DSLAM has five terminals: two positive, two negative, and one ground. Only one positive terminal and one negative terminal pair need be connected for operational purposes. The second positive and negative terminal pair may be connected to a backup DC power supply for redundancy. The ground terminal must be connected regardlessly. DO NOT OPERATE THE DSLAM WITHOUT A GROUND CONNECTION.

To connect the DSLAM to power:

1Make sure that the DC power source wires are not powered (that is, the circuit breakers or fuses are open at the source).

2Strip about 1/2 inch (13 mm) of insulation off the ends of the 18–14 AWG or 0.75–2.5 mm2 solid or stranded wires you will use for power.

3Loosen the screw above the center terminal on the DC terminal strip on the face of your DSLAM.

4Insert your ground wire into the center terminal and tighten the screw.

5Attach the other end of the ground wire to an earth ground.

6Loosen the screws above the positive and negative terminals on one side of the terminal strip.

7Insert your negative DC power lead into the negative (–) terminal and then tighten the screw.

8Insert your positive DC power lead into the positive (+) terminal and then tighten the screw.

9Repeat Step 6 through Step 8 if you have a redundant power source.

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Zhone Technologies 4929 DSLAM manual Connecting to Power, Connecting a Modem to the COM Port

4929, 4929 DSLAM specifications

Zhone Technologies, a leading provider of innovative networking and communications equipment, has garnered attention for its advanced digital subscriber line access multiplexer (DSLAM), the Zhone 4929. This model is designed to meet the growing demand for high-speed broadband access in a variety of environments, making it a vital component in modern telecommunications networks.

One of the primary features of the Zhone 4929 DSLAM is its ability to support multiple DSL standards, including ADSL, ADSL2, ADSL2+, and VDSL2. This versatility enables service providers to efficiently manage a diverse range of customer demands and to optimize bandwidth allocation across various service tiers. The ability to support both asymmetric and symmetric DSL technologies allows operators to cater to different business and residential requirements while maintaining service quality.

The Zhone 4929 is equipped with advanced hardware that supports high-density deployments, allowing network operators to maximize their investment in infrastructure. With support for up to 384 DSL lines in a single chassis, this DSLAM can easily scale to accommodate growing subscriber bases. This flexibility is essential for service providers aiming to expand their coverage and reach without significantly increasing operational costs.

Another notable characteristic of the 4929 is its robust management capabilities. It features an intuitive management interface that simplifies the monitoring and configuration of the device, enabling operators to efficiently manage their networks. With real-time performance monitoring and diagnostic tools, service providers can quickly identify and resolve issues, ensuring a high-quality end-user experience.

Power efficiency is also a key aspect of the Zhone 4929 design. The DSLAM employs energy-efficient technologies that reduce overall power consumption, making it not only environmentally friendly but also cost-effective during operation. This is particularly important in an era where operational costs and sustainability concerns are at the forefront of industry challenges.

Moreover, the Zhone 4929 is designed with future-proofing in mind. Its modular architecture allows for easy upgrades and expansions, meaning that service providers can adapt to new technologies and standards as they emerge, protecting their investments over time.

In conclusion, the Zhone Technologies 4929 DSLAM is a powerful solution for enhancing broadband access. Its support for multiple DSL technologies, high-density capabilities, robust management tools, energy efficiency, and future-proof design make it an essential component for any service provider looking to deliver high-speed internet access in today's fast-paced digital world.