PXB4219 Datasheet, PDF (21/290 Pages) Infineon Technologies AG – IWE8 Interworking Element for 8 E1/T1 Lines

PXB4219 / PXB4220 / PXB4221
Overview
1.3
Typical Applications
Figure 2 illustrates three typical application areas which utilize the IWE8 chip in Line
Interface Cards (LICs) or Network Interface Controllers (NICs).
Application 1 utilizes the IWE8 as an internetworking device for communication between
a narrowband Time-Slot based network and an ATM network.
Application 2 utilizes the IWE8 chip to enable the use of an existing T1/E1 access line
for connection to an ATM network.
In application 3, the IWE8 chip enables terminals using a Leased Line or Time-Slot
based service to convert from T1/E1 network connection to ATM network connection
without noticeable changes to the subscriber.
Application 1
PBX
PBX
DS1/E1 Links
DS1/E1 Links
0
IWE^TM 8
7
Structured Circuit Emulation
Service for DS1/E1
(Nx64kbit/s with/without
partially filled cells) over ATM
Application 2
Multiservice
Switch
0
IWE^TM 8
7
NNI/UNI 2.048 Mbps,
NNI/UNI 1.544 Mbps
(I.432.2, G.804)
ATM Links
ATM
Network
Application 3
PBX
PBX
DS1/E1 Links
DS1/E1 Links
0
IWE^TM 8
7
ATM Links
Unstructured Circuit Emulation
Service for DS1/E1 (with/
without partially filled cells) for
Leased Lines over ATM
Figure 2 Typical IWE8 Applications
The PXB 4220 IWE8 chip is designed to handle up to eight T1/E1 ports. It transfers data
between the Pulse Code Modulation (PCM)-highway and an UTOPIA ATM Interface.
Data Sheet
21
2002-05-06