Chapter

Connecting Power for DC Systems

Figure 7-9 48V DC Male Power Receptacle Viewed Facing the Rear of the Shelf

Positive ground

Safety ground

-48VDC

 

 

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Step 3 Attach the two supplied female Euro-block connectors to the two cables supplying DC power to the power entry modules.

The cables should have three insulated number 12 AWG wires (solid or stranded) with the insulation stripped back 0.25 inch (6 mm) on each wire.

Test which way the female connector attaches to the male connector using the pin assignments in Figure 7-9as a guide. For each cable, insert each of the wires into their correct holes in the connector and secure each wire by tightening the screws in the connector.

Step 4 Connect a cable to each of the power entry module connectors. The connectors are polarized so they cannot be inserted the wrong way.

Step 5 Use the PEM cable clamp to secure the power cable. (See Figure 7-10.)Place the cable clamp over the connector so that the small hole is positioned over the boss on the PEM. Secure by attaching the clamp to the PEM with the captive screw. The cable clamp can be dressed to the left or right and secured to the clamp using a tie wrap.

Step 6 If the redundant PEM module is not used, the cover power entry module must be installed in the empty position to ensure proper cooling of the rear cards.

Figure 7-10 PEM Cable Clamp

Position over boss on

Connector showspower entry module through here

H8283

Use screw to attach to power entry module

Use tie wrap to secure power cable

 

Cisco MGX 8220 Installation and Configuration

7-14

Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003

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Cisco Systems MGX 8220 manual PEM Cable Clamp
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MGX 8220 specifications

The Cisco Systems MGX 8220 is a versatile, high-performance media gateway that has become an integral component in the telecommunications infrastructure. Designed to facilitate the transition from traditional circuit-switched networks to advanced packet-switched environments, the MGX 8220 supports a wide array of voice, video, and data services, making it an essential tool for service providers and enterprises seeking to enhance their network capabilities.

One of the key features of the MGX 8220 is its robust signaling and media processing capabilities. Equipped with support for both Voice over IP (VoIP) and traditional telephony protocols, this gateway enables seamless integration of different communication formats. It boasts a modular architecture, which allows for the addition or removal of various line cards to meet changing demands and technology advancements. This modularity provides operators with the flexibility to scale their services without significant overhauls to their existing infrastructure.

The MGX 8220 is capable of delivering high-density media handling for a multitude of services. With its support for ATM and IP networks, the gateway can handle TDM (Time-Division Multiplexing) to packet voice conversions efficiently. It is designed to optimize network resources by dynamically allocating bandwidth based on traffic requirements, thus ensuring efficient use of network resources and improved performance.

Another significant characteristic of the MGX 8220 is its enhanced quality of service (QoS) features. This capability ensures that voice and video traffic is prioritized appropriately, minimizing latency and jitter while maximizing overall call quality. By employing sophisticated traffic management techniques, the MGX 8220 can deliver a superior user experience, which is critical for any service provider aiming to offer competitive communication solutions.

Furthermore, the gateway includes built-in security features to protect against unauthorized access and ensure the integrity of sensitive data. This includes encryption for voice and video transmission, as well as support for secure signaling protocols.

Overall, the Cisco Systems MGX 8220 stands out as a comprehensive media gateway solution, providing essential functionalities for modern communication needs. Its combination of modularity, high-density processing, effective QoS management, and security features makes it a compelling choice for organizations looking to modernize their telecommunications infrastructure while ensuring reliability and performance. As businesses continue to evolve and demand more from their networks, the MGX 8220 offers a pathway to future-ready communications.
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