Chapter

Replacing Parts

To remove a back card, perform the following steps:

Step 1 Remove any cables connected to the back card.

Step 2 Use a flat screwdriver to unscrew the two retaining screws in the back card’s faceplate.

Step 3 Pull the two extraction levers into the horizontal position. This will start the card extraction.

Step 4 Gently pull the card out of the card cage.

To install a back card, perform the following steps.

Step 1 Position the extraction levers so that they lie flush with the card’s faceplate.

Step 2 Position the rear card guides over the appropriate slot at the top and bottom of the card cage.

Step 3 Gently slide the card all the way into the slot.

Step 4 Tighten the two captive screws on the back card’s faceplate.

Tighten the upper and lower screws alternately to prevent misalignment of the card. Tighten the screws to secure the card. Do not overtighten.

Warning Cards must be inserted in the correct slot positions. This is particularly true with back cards. If service module back cards are inserted into slots intended only for ASC and/or BNM back cards (slots 1, 2, 3, and 4) damage to the card and backplane can result. If you accidentally attempt to insert a service module back card into slots 1, 2, 3, or 4 and have difficulty in operating the shelf, examine the backplane pins and the connector on the wrongly inserted back card to see if they have been bent or damaged.

Replacing a DC Power Entry Module

DC power entry modules (PEMs) contain few active components so they should rarely need replacement. Access is from the back of the shelf. To remove a PEM, perform the following steps:

Step 1 Press the red button on the power entry module you need to replace. This removes power from the module.

Step 2 Disconnect the 48V DC power cable from the module.

Step 3 Pull out the power entry module from its slot.

Step 4 Slide in the replacement module until its connector seats in its socket.

Step 5 Replace the 48V DC power cable.

Step 6 Press the black button on the power entry module until it latches in the IN position.

 

Cisco MGX 8220 Installation and Configuration

8-22

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

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Cisco Systems MGX 8220 manual Replacing a DC Power Entry Module
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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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