Chapter

Replacing Parts

Parts should be replaced by personnel who have taken Cisco training courses or have been trained by a qualified system manager. For assistance in diagnosing or replacing a failed part, contact Cisco TAC.

Save the electrostatic bag, foam, and carton. These packaging materials are needed to return the failed part to Cisco.

Replacing a Front Card

This section describes how to replace an MGX 8220 front card.

The MGX 8220 shelf front cards are

•MGX 8220 shelf controller (ASC)

•Broadband network module (BNM)

•Service redundancy module (SRM)

•Service modules

•ATM inverse multiplexer network module (IMATM)

Caution Ground yourself before handling the MGX 8220 shelf cards by placing a wrist strap on your wrist and clipping the wrist strap lead to the cabinet.

When a card has failed, the red fail light for that card turns on. Before replacing it, check to see if the card needs to be reseated and check that the appropriate back card is correctly installed. After reseating the card, wait for it to run its self-tests to see if the active light comes on. If the card is seated correctly, but the fail light is still on, replace the card.

When replacing a card that has no redundant equivalent, the service provided by that card will be disrupted. Replacing a nonredundant ASC or BNM card brings down the entire shelf. Replacing a FRSM card brings down the channels that are serviced by that card.

To remove a front card, perform the following steps:

Step 1 Insert a small flathead screwdriver into the slot in the retaining tab and press until the latch springs open.

Step 2 Gently pull the card out of the card cage.

To install a front card, perform the following steps:

Step 1 Position the card guides over the appropriate slot at the top and bottom of the card cage.

Step 2 Gently slide the card all the way into the slot and press the retaining tab until it snaps into the vertical position.

Replacing a Back Card

Back cards are retained through two screws—one at the top of the faceplate and one at the bottom of the faceplate. Back cards contain very few active components (if any) and rarely need replacing.

 

 

Cisco MGX 8220 Installation and Configuration

 

 

 

 

 

 

 

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

 

 

8-21

 

 

 

 

 

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Cisco Systems MGX 8220 manual Replacing a Front Card, Replacing a Back Card
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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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