Chapter

Inverse Multiplexer for ATM Trunk Module

The IMATM is a two-card set consisting of a function module front card and a line module back card. The following front card and line module sets are available:

Front card:

IMATM-8T1

Back card:

RJ48-T3T1

T1 Line interface connector:

Miniature RJ-48C

T3 Line interface connector:

BNC

 

 

Front card:

IMATM-8E1

Back card:

RJ48-E3E1

E1 Line interface connector:

Miniature RJ-48C

E3 Line interface connector:

BNC, 75

 

 

Front card:

IMATM-8E1

Back card:

SMB-E3E1

E1 Line interface connector:

Miniature SMB

E3 Line interface connector:

Miniature SMB

 

 

The shelf may contain one or multiple IMATM card sets in any available service module slot. 1:1 IMATM redundancy is achieved by installing two card sets and a Y-cable.

The IMATM performs no MGX 8220 functions and is solely an extension to the BPX 8620 BNI card. The BPX 8620 can use up to eight T1 or E1 lines as a trunk (instead of a single T3 or E3 line) by using an IMATM card in the MGX 8220 shelf.

The IMATM accepts trunk signals from the BPX 8620 BNI over a single T3 or E3 connection and inverse multiplexes over multiple T1 or E1 lines. The other end of the inversed multiplexed trunk is another IMATM card in a remote MGX 8220 shelf. (See Figure 4-12.)

Figure 4-12 IMATM Application

MGX 8220

BPX

BNM

8620 T3/E3

 

 

 

 

 

ASC

 

 

 

 

 

 

 

 

 

BCC

BNI

 

 

IMATM

T3/E3

 

 

 

 

 

 

 

 

Service

 

 

 

 

modules

 

 

 

 

 

 

T1/E1 lines

 

 

 

 

 

 

 

 

 

 

SRM

 

 

 

 

 

Up to 8 T1/E1

MGX 8220

BNM

ASC

IMATM

Service

modules

SRM

BPX

T3/E3 8620

BNI BCC

T3/E3

H8265

T1/E1 lines

The IMATM can also be used to connect a remote MGX 8220 shelf to a BPX 8620 hub as shown in Figure 4-13.

 

Cisco MGX 8220 Installation and Configuration

4-24

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

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Cisco Systems MGX 8220 manual IMATM-8T1, Bnc, IMATM-8E1, SMB-E3E1
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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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