Agilent Technologies 622Vu Advisor, Руководство пользователя

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Use the drop-down lists in the mini-wizard to specify the Segmentation and
Reassembly (SAR) settings you want. The first position in the payload is
reserved for these (combined) settings and changes as you set each field:
Field Description
CSI Convergence Sublayer Indicator, specified as 0 or 1.
SC Sequence count, in the range 0–7.
SN Serial number, specified as hexadecimal 0–F. This value is carried in the high-order
four bits of the first payload byte. As an alternative to specifying this field, provide
the CSI and SC values individually.
CRC
Checksum of the unframed payload data, in the range 0–7. AAL1 uses this CRC to
verify correct transmission of the payload.
Parity Parity used for transmission, specified as 0 (even) or 1 (odd).
SNP Sequence Number Protection, specified as hexadecimal 0–F. This value is carried in
the low-order four bits of the first payload byte. As an alternative to specifying this
field, provide the CRC and Parity values individually.
AAL5 Framing
If you select AAL5 cell framing, 622Vu Advisor provides mini-wizards to assist
you in formatting the cell’s Segmentation and Reassembly (SAR), CPCS
(Common Part Convergence Sublayer), and time-stamp (Special) information
correctly.
Each has its own tab. Click each tab in turn, specifying information as described
below.
SAR Settings
There’s one SAR field. That field applies if this cell contains the end-of-
datagram signal (i.e., if it’s the last cell of the PDU):
9: Editing Transmit Sequences
9.4 Defining the Cells In a Sequence
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