Comtech EF Data CDM-800 Manuel d'utilisateur télécharger pdf (Page 20)

Ultra Low Overhead Encapsulation

• Ultra low overhead Streamline

Encapsulation (SLE)

– Patent pending

– Reduces encapsulation overhead

 Up to 65% compared to HDLC

 Up to 95% compared to AAL5 used in

DVB-RCS

 Up to 90% compared to proprietary

framing used by other VSATs

• Enhanced Generic Stream

Encapsulation

– 70-80% more efficient compared

to MPE

– 20-30% more efficient compared

to GSE

10%

20%

30%

40%

50%

60%

70%

64 12 8 192 256 320 384 448 512

EncapsulationOverhead

IPDatagramSiz e(bytes)

DVB‐RCS‐ BestCase DVB‐RCS‐ WorstCase ComtechSLE

Voice traffic

Comtech SLE overhead is

90-95% lower compared to

traditional VSAT return

framing / encapsulation

10%

15%

20%

25%

30%

64 128 192 256 320 384 448 512

EncapsulationOverhead

IPDatagramSize(bytes)

MPE

GSE

CEFDEGSE

Voice traffic

Comtech’s Enhanced GSE

70-80% more efficient than MPE

20-30% more efficient than GSE

20Comtech EF Data Proprietary & Confidential

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Comtech EF Data CDM-800 Manuel d'utilisateur Page 20

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