84
C
HAPTER
4: P
ATH
B
UILDER
S700 M
ODULE
AND
A
PPLICATION
O
VERVIEW
E1 CBR Module Standards Support
Table 28 lists the standards supported by
the E1 CBR module.
QSIM/HSIM/FAM
Module Overview
The PathBuilder S700 supports three Frame Relay modules: QSIM, HSIM, and FAM.
These modules are port, or application, modules for connecting non-ATM devices
to ATM services. Typical device applications include FRADs (Frame Relay Assembler
and Disassembler or Frame Relay Access Devices), channel extenders, FEPs
(Front-End Processors), and routers.
The HSIM module is used to interconnect terminals to DCE devices that must
operate between 3 and 20Mbps.
Table 29 summarizes the basic features of the three Frame Relay modules.
Each of the Frame Relay modules provides a number of serial interfaces and an
ATM SAR and is able to perform cell-to-frame as well as frame-to-cell conversion.
Frames received from the HDLC serial interfaces are segmented in to cells by SAR
and passed to the ATM backplane. In the other direction, cells received from ATM
backplane will be reassembled into frames and passed to the HDLC serial
interfaces.
A RISC processor on the Frame Relay module performs these functions:
n
management CPU (MCPU) communication
n
hardware device configuration
n
frame/cell conversion
n
permanent virtual circuit management
n
alarm generation
n
statistical data collection.
The SAR contains 15 traffic shapers, each of which can be programmed for
sustained cell rate of transmission, peak cell rate, and maximum burst size.
Table 28
E1 CBR Module ATM Forum/ANSI/ITU-T Supported Standards
Standard
Description
AF-SAA-0032.000
ATM Forum Circuit Emulation Service (CES)
ANSI T1.630/ITU 1.36
AAL1 Unstructured Data Transfer Mode
Table 29
PathBuilder S700 Frame Relay Modules
Module
Acronym
# of ports
Type of ports
Quad Serial Interface
Module
QSIM
4
V.35, RS449, EIA 530, X.21
(64K to 8 Mbps)
HSSI Module
HSIM
1
HSSI (20 Mbps)
Frame Access Module FAM
8
T1 (64K to 1.5 Mbps)
Summary of Contents for 3C63400-3AC-C - PathBuilder S700 Switch
Page 14: ...xiv CHAPTER SUPPLEMENTARY REGULATORY INFORMATION ...
Page 18: ...4 ABOUT THIS GUIDE ...
Page 28: ...14 CHAPTER 1 SYSTEM DESCRIPTION ...
Page 88: ...74 CHAPTER 3 GETTING STARTED ...
Page 260: ...246 CHAPTER 6 PATHBUILDER S700 DIAGNOSTICS AND PERFORMANCE MONITORING ...
Page 270: ...256 INDEX ...