Chapter

Unpacking

customer-supplied terminal block must be provided. Only power supplies complying with SELV requirements in EN 60950, UL 1950, IEC950, can be connected to the 48V DC input of the MGX 8220 system.

•AC Version

For the AC version, an AC power source is required. For power supply redundancy, two such AC sources, (preferably independent) are required. Each source should be capable of supplying 500W per shelf. The AC power cables from the AC source attach to the AC power module, which is mounted below the shelf and cooling assembly.

An AC circuit breaker is recommended for the AC power source that supplies AC power to each MGX 8220 shelf. This circuit breaker should protect against excess currents, short circuits, and earth faults in accordance with national and local electrical codes.

The dedicated circuit breaker should be sized so that the rated current and the trip delay is higher and longer than the MGX 8220 circuit breaker. A 20A, 2-pole AC circuit breaker with a long trip delay is recommended.

For information purposes, the MGX 8220 shelf uses a 20A, 2-pole AC circuit breaker on each AC input. The circuit breaker manufacturer is ETA (part number 8340-F120-P1P2-B2H020A).

Cooling

The site must be capable of maintaining a maximum ambient temperature of 40° C while the system is operating. The recommended temperature range is 20 to 30° C. A fully loaded MGX 8220 switch can dissipate up to 2400 Btus.

Caution Inadequate ventilation to the system can cause reliability or functionality issues. It is extremely important that the MGX 8220 switch is installed in a manner that will ensure unrestricted airflow through the system. Cisco recommends that the switch be mounted in a frame or a cabinet that does not have front or rear doors that can restrict airflow through the system. If you are going to mount the MGX 8220 switch in a frame or a cabinet that has front or rear doors, contact Cisco TAC to determine if the doors can provide adequate ventilation to the system.

Unpacking

The MGX 8220 shelf, the main cooling assembly, the booster cooling assembly, the plenum and spacer, and the AC power module are shipped in their own separate shipping containers.

To unpack and install the shelf and the cooling assembly, the following tools should be available:

•Utility knife

•Flat blade and Phillips screwdriver sets

•Grounding wrist strap

Warning If any of the shipping containers are damaged, of if any of the various shipping indicators show improper handling of the containers, contact your local shipping representative.

 

Cisco MGX 8220 Installation and Configuration

7-4

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

Page 157 Page 159
Page 158
Image 158
Cisco Systems MGX 8220 manual Unpacking, Cooling
Page 157 Page 159

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.
Top Page Image Contents