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Prestige 724 G.SHDSL CSU/DSU
3.3
Channel Profile
A channel is a path that transfers data from and to the LAN. The following gives you information on how to
configure a channel using Menu 11.1 – Channel Profile.
3.3.1 Channel Name
Name the channel you want to configure. Follow the naming rules in Table 3-3.
3.3.2 Active
You can conveniently disable or enable specific channels as needed.
3.3.3 Encapsulation
Select the appropriate encapsulation, when you configure your Prestige, in order to achieve end-to-end
service interoperability between terminal equipment. The encapsulation type you select determines the how
frames/cells are converted. If you are not sure what encapsulation type you should select then contact your
NSP.
Encapsulation choices are described next. The figure shown next gives more detailed information about
how packet headers are stripped.
FRF8_TRANSLATION
This encapsulation type converts frame relay to ATM and vice-versa. FRF8_TRANSLATION strips two
headers (the Frame Relay Header and 1490 Header) from the frame relay frame and maps one frame relay
VC (Virtual Circuit) to one ATM VC.
Refer to RFC 1490 and RFC 1483 for more information.
FRF8_TRANSPARENT
This encapsulation type converts frame relay to ATM and vice-versa. FRF8_ TRANSPARENT strips one
header (the Frame Relay Header) from the frame relay frame. This encapsulation type maps one frame
relay VC to one ATM VC.
FRF.5
This encapsulation type converts frame relay to ATM and vice-versa. FRF.5 does not strip any headers
from the frame relay frame and maps many frame relay VCs to one ATM VC. The mapping function of this
encapsulation type makes the overhead larger (or performance slower) than FRF8_TRANSLATION.
Refer to RFC 1490 and RFC 1483 for more information.
Channel Setup
3-3
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