RELEASED
PM73123 AAL1GATOR-8
DATASHEET
PMC-2000097
ISSUE 2
8 LINK CES/DBCES AAL1 SAR
4.2 ATM Passive Optical Networks (APON)
The general architecture of a Passive Optical Network (PON) access
network consists of two key elements: the Optical Line Termination (OLT)
and the Optical Network Unit (ONU). The OLT is connected to the ONU
through a point-to-multipoint Passive Optical Network that consists of
fiber, splitters and other passive components. Typically, up to 32 ONUs
are connected to a single OLT, depending on the splitting factor. OLTs are
typically located in local exchanges and ONUs on street locations, in
buildings or even in homes. Figure 2 shows the use of the AAL1gator-8 in
an ONU application supporting CES functions.
UTOPIA L2/
UTOPIA L2
Any-PHY
PM4354
COMET-
QUAD
COMET-
QUAD
PM7329
S/UNI-APEX-
1K800
PM4354
PM73123
AAL1gator-8
T1/E1 x 8
Optical
Module
PM7328
S/UNI-ATLAS-
1K800
ATM
Ethernet
Video
Interworking
Function,
AAL5 SAR
Figure 2. AAL1gator-8 in an APON ONU Application.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
30
PMC [ PMC-SIERRA, INC ]
