Cisco Systems MGX 8220 manual Service Interfaces, Remote Locations, Atm Uni/Nni

Chapter

Cisco MGX 8220 System Overview

Thus, the Cisco MGX 8220 shelf supports aggregation of traffic up to 80 T1 or E1 access ports or up to 1240 64-Kbps subscribers, onto a single T3, E3, or OC-3c trunk, using only a single port on the Cisco BPX switch.

Figure 1-2shows the Cisco MGX 8220 switch relationship.

Figure 1-2 Cisco MGX 8220/Cisco BPX Switch Relationship

T1, E1, T3, or HSSI/X.21 Service Interface Lines

MGX 8220

BPX 8620	Broadband ATM Service
		S6176
T3, E3 or SONET ATM
Feeder Connection

Remote Locations

For locations with limited switching requirements, the Cisco MGX 8220 can be physically remote from the Cisco BPX 8600 series switch using IMA trunk machines as shown in Figure 1-3.

Figure 1-3 Remote Cisco MGX 8220 Configuration

		Long Distance
T1, E1 or T3
Service	MGX 8220		MGX 8220
Interface		IMA Trunk
Lines

BPX 8620

Broadband ATM Service

S6177

Standalone Cisco MGX 8220 Edge Concentrator

The Cisco MGX 8220 edge concentrator is not limited to attachment to the Cisco BPX 8600 series switch. In standalone operation, the Cisco MGX 8220 trunk can attach to any ATM switch to provide service aggregation.

Service Interfaces

The Cisco MGX 8220 supports the following services and interfaces:

•Frame Relay UNI/NNI

–56 kbps, nx64 kbps, T1, E1, HSSI, X.21

–Frame Relay to ATM network and service internetworking

•High-speed Frame Relay

•ATM Frame UNI

–56 kbps, nx64 kbps, T1, E1, HSSI, X.21

•ATM UNI/NNI

–T1, E1, nxT1 (IMA), nxE1 (IMA)

	Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003		1-3