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4 Pages
FRATMOSI
Course: EE 4390, Fall 2008School: Dallas
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Word Count: 374
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Features X.25 STDM Low Speed but full error control Very efficient and reliable for small Data packets Virtual Circuits X.25 and OSI Layers Application . . X.25 Packet Data Link Physical Application . . X.25 Packet Data Link Physical LCN X.25 Packet Data Link Physical LCN Frame Relay Features STDM High Speed (45 Mbps) but no error control Suitable for bursty transmission of Data traffic Virtual...
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Coursehero >> Texas >> Dallas >> EE 4390Course Hero has millions of student submitted documents similar to the one
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below including study guides, practice problems, reference materials, practice exams, textbook help and tutor support.
Features
X.25 STDM Low Speed but full error control Very efficient and reliable for small Data packets Virtual Circuits
X.25 and OSI Layers
Application . . X.25 Packet Data Link Physical Application . . X.25 Packet Data Link Physical
LCN
X.25 Packet Data Link Physical
LCN
Frame Relay Features
STDM High Speed (45 Mbps) but no error control Suitable for bursty transmission of Data traffic Virtual Circuits
Frame Relay and OSI Layers
Application . . . Data Link Physical VC Data Link Physical VC Application . . . Data Link Physical
05/16/09
EE4367
ATM
It is a technology for transforming data to fixed size cells It provides for connection oriented communication It supports other higher level protocols It can combine Voice, Video and Data on the same transmission line
ATM Sub-layers
Convergence Sub layer
Application . . . Data Link Physical
AAL ATM Adaptation Layer Cell Switching Physical
SAR Segmentation & Reassembly
ATM Service Classes and QOS
AAL 1 Constant Bit Rate (CBR), Circuit Emulation Service (CES) Voice and video AAL 2 - Variable Bit Rate (VBR-rt) Video AAL 3/4 - Variable Bit Rate (VBR-nrt) Broadcast video, Data AAL 5 - Available Bit Rate (ABR), Unspecified Bit Rate (UBR) Data
05/16/09
EE4367
Frame and Relay ATM Services
SLA Service Level Agreements
Frame Relay - PVC
CIR Committed Information Rate Bc Committed Burst Size Tc Committed Time interval Be Excess Burst Size
ATM - PVC
PCR Peak Cell Rate SCR Sustained Cell Rate CLR Cell Loss Ratio CTD Cell Transfer Delay CDV - Cell Delay Variation MCR Mean Cell Rate BT Burst Tolerance or MBS Max. Burst Size
Traffic Characteristics
CBR
VBR-rt
VBR-nrt
ABR
UBR
Specified Specified CLR CTD and CDV Specified Specified Specified Specified PCR N/A Specified SCR and MBS N/A N/A MCR
Specified Specified Unspecified CTD only Unspecified Unspecified Specified Specified Specified Specified N/A N/A N/A Specified N/A
05/16/09
EE4367
ISDN and B-ISDN
An ISDN is circuit swi...
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