Encore electronic ENDSL-A2+WIG2 - Manual (Page 36)

The following table describes the labels in this screen.
LABEL DESCRIPTION
VPI Enter the VPI here. VPI can range from 0 to 255.
VCI Enter the VCI here. VCI can range from 32 to 65535.
Connection Type Select your connection type from the dropdown list.
Your ISP should provide the above information. Click on BACK to return to the
previous screen, on NEXT to continue, or on EXIT to exit the wizard without saving.
5.3.6 Multiplexing
Two conventions identify what protocols a virtual circuit (VC) is carrying. Be sure to use the
multiplexing method your ISP requires.
(1) VC-Based Multiplexing
In VC-based multiplexing, by prior mutual agreement, each protocol is assigned to a
specific virtual circuit. For example, VC1 carries IP, etc. VC-based multiplexing may be dominant
in environments where dynamic creation of large numbers of ATM VCs is fast and economical.
(2) LLC-Based Multiplexing
In LLC-based multiplexing, one VC carries multiple protocols with protocol-identifying
information contained in each packet header. While this method requires extra bandwidth and
processing overhead, this method may be advantageous if it is not practical to have a separate
VC for each carried protocol; for example, if charging heavily depends on the number of
simultaneous VCs.
5.3.7 VPI and VCI
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Be sure to use the Virtual Path Identifier (VPI) and Virtual Channel Identifier (VCI) numbers
assigned to you. The valid range for the VPI is 0 to 255. The valid range for the VCI is 32 to
65535. 0 to 31 is reserved for local management of ATM traffic.