ZyXEL Communications SAM1316-22, User Manual

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Chapter 13 xDSL Port Setup
SAM1316-22 User’s Guide
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13.4 EFM and ATM Modes
The SAM1316-22 can operate in two modes: Ethernet in the First Mile (EFM) and
Asynchronous Transfer Mode (ATM).
• IEEE 802.3-2004’s EFM (Ethernet First Mile) lets you run Ethernet protocol over
G.SHDSL. EFM framing has less overhead than ATM encapsulation, thus allowing
better data transmission rates. If the CPE device supports EFM, select efm to
use Ethernet frames over SHDSL. For ports set to EFM mode you can use PAF
(PHY Aggregation Function) to bundle EFM PHYs to either increase the data rate
of one logical EFM link for a given loop length or increase the maximum
achievable loop length for a given data rate. This bundling is configured in the
SHDSL profile’s Wire Pair setting (see Chapter 14 on page 108 ).
• If the CPE device only supports ATM, select atm to use ATM cells over SHDSL.
For ports set to ATM mode, you can use G.bond to create bundles of up to 16
wires (see Chapter 16 on page 129 ).
13.5 Default Settings
The default profile always exists and all of the DSL ports use the default profile
settings when the SAM1316-22 is shipped. The default profile's name is set to
DEFVAL
.
See Appendix A on page 435 for the settings of the default profile and DSL port
default settings.
13.6 xDSL Port Setup Screen
To open this screen, click Basic Setting, xDSL Port Setup.
Figure 43 xDSL Port Setup