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Comparison of AAL Protocols

written 5.4 years ago by teamques10 ★ 68k

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written 5.4 years ago by teamques10 ★ 68k

Item	AAl 1	AAL 2	AAl 3/4	AAL 5
Service class	A	B	C/D	C/D
Multiplexing	No	No	Yes	Yes
Message delimiting	None	None	Btag/Etag	Bit in PTI
Advance buffer allocation	No	No	Yes	No
User byte available	0	0	0	1
CS Padding	0	0	32-Bit word	0-47 Bytes
CS protocol overhead (bytes)	0	0	8	8
CS checksum	None	None	None	32-Bits
SAR Payload bytes	46-47	45	44	48
SAR protocol Overhead (Bytes)	1-2	3	4	0
SAR checksum	None	None	10 bits	None

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