S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
5.2 Remote DSLAM WAN Uplink
Coupled with ATM, remote DSLAMs enable service providers to utilize the bandwidth of the
T1/E1 infrastructure for delivering integrated services such as high-speed Internet access and
real-time voice and video. ATM over T1/E1 is a suitable remote DSLAM WAN uplink
technology and IMA, due to its benefits of higher bandwidth, statistical gain and fault tolerance,
is even more suitable. Figure 2 illustrates an example of the S/UNI-IMA-4 in a remote DSLAM
WAN uplink application.
Figure 2 Remote DSLAM WAN Uplink
UTOPIA L2 /
Any-PHY
UTOPIA L2
PM7329
S/UNI-APEX-
1K800
PM7350
Clock/Data
S/UNI-DUPLEX
.
PM4354
COMET-
QUAD
PM7351
PM7340
.
S/UNI-VORTEX
.
PM7350
S/UNI-IMA-4
PM7350
S/UNI-DUPLEX
S/UNI-DUPLEX
PM7328
S/UNI-ATLAS-
1K800
The design shown in Figure 2 is built upon the Vortex Chipset, which comprises the PM7351
S/UNI-VORTEX, PM7350 S/UNI-DUPLEX, PM7329 S/UNI-APEX-1K800 and PM7328
S/UNI-ATLAS-1K800 devices. Each S/UNI-VORTEX aggregates traffic from up to eight
S/UNI-DUPLEXs which, in turn, aggregate traffic from multiple DSL MODEMs and/or
COMET-QUAD Framer plus LIUs. The S/UNI-APEX-1K800 is an ATM/Packet Traffic
Manager and Switch device which aggregates, shapes and switches traffic from the S/UNI-
VORTEX. The S/UNI-ATLAS-1K800 performs OAM, policing and address translation
functions (see document PMC-1990712, “VORTEX Chip Set Introduction” for details).
The S/UNI-IMA-4 seamlessly interfaces to the Vortex Chipset over a standard UTOPIA Level
2/ Any-PHY bus and the COMET-QUAD over a clock and data interface.
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
24
PMC [ PMC-SIERRA, INC ]
