Chapter 33 At3-6Me (T3 To T2) Interface Adapter; Application; General Description; Figure 33-1 Network Application - Cisco BPX-BXM-155-8DX Installation And Configuration Manual

AT3-6ME (T3 to T2) Interface Adapter
This chapter describes the AT3-6ME Interface Adapter, sometimes referred to as the T3-T2 Interface
Adapter. It is used with the BPX switch to provide a 6 Mbps ATM network interface to T2 transmission
facilities.

Application

The AT3-6ME Interface Adapter is used with the BPX Broadband ATM Switch in applications where
it is required to interface a 6 Mbps T2 digital network facility to the 45 Mbps T3 ATM port on the BPX
or IGX node.
Applications include networks where T2 transmission facilities are available. Users with ATM
networks who require somewhat more bandwidth than is provided by the T1 or E1 ATM network
connections but do not need the full T3 bandwidth provided by the BPX ATM network ports can also
benefit from using the AT3-6ME Interface Adapter. See Figure 33-1 for a typical application.

Figure 33-1 Network Application

BPX/IGX
ATM interface
UNI or NNI

General Description

The AT3-6ME Interface Adapter is a bi-directional device that provides a conversion between
transmission systems of different transmission rates:
•
•
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
T2 network trunk
AT3-6M
adapter
T3 ATM interface T2 interface
ATM UNI standard
the North American T3 (44.736 Mbps)
the Japanese 6M (T2).
C H A P T E R
T2 network trunk
AT3-6M
Network
adapter
Cisco BPX 8600 Series Installation and Configuration
33
BPX/IGX
ATM interface
UNI or NNI
33-1