Installation guide

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3 Speed Touch USB Diagnostics
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3EC 16807 AAAA TCZZA Ed. 07
3.3.1 Connection Di agnostics
By default the detailed Diagnostics will appear with the
'Connection' tab selected:
Field Description
VPI/VCI The STUSB's ADSL PPPoA connections use Asynchronic
Transfer Mode (ATM)'s virtual channels for accessing the ADSL
line.
Virtual Path Identifier (VPI) /Virtual Channel Identifier (VCI) are
2 numbers that together uniquely identify a Virtual
Channel (VC) and Virtual Path (VP) .
Typ e Indicates which method (VCMUX, or LLC) is used for
encapsulating/decapsulating the PPP packets in/from the ATM
Adaption Layer 5 (AAL5).
SDU Transmit
SDU Receive
Indicates the number of Service Data Unit (SDU)s which are
transmitted; and received.
Tx/Rx SDU
Size
Indicates the size of the SDUs which are transmitted (Tx), and
received (Rx).