Section 10.1.3 – Westermo RedFox Series User Manual
Page 208
Westermo OS Management Guide
Version 4.17.0-0
This functionality is using a different SHDSL mode compared to default set-
ting, thus the Low Jitter configuration must be set on both SHDSL ports shar-
ing the physical cable.
❼ EMF - Emergency Freeze function: EMF enabled makes the unit detect ex-
ception situations on the SHDSL links. The detection will freeze the SHDSL
transceiver parameters temporarily to keep the link up. With this function
enabled the unit might avoid a complete SHDSL retrain that could take up
to a minute. The unit may lose data even with EMF enabled, but only for a
short period of time.
Note
Only the data rate and noise margin settings of the CO are used in the SHDSL
connection. These parameters are passed to the CPE during the connection
establishment phase.
10.1.3
General port settings
The following parameters can be configured for SHDSL ports in the same way as
for Ethernet ports. The SHDSL uses Ethernet First Mile (EFM) encapsulation, thus
many Ethernet settings apply to the SHDSL ports. More detailed information is
found in
❼ Port enable/disable: Ports can be disabled and enabled administratively.
❼ Port priority mode: Define whether incoming packets should be prioritised
based on VLAN tag, VLAN ID, port ID, IP ToS, etc. See also
❼ Port priority (level): The inbound priority associated with this port. See also
❼ Link alarm: Link status can be configured as an alarm source. See also
❼ Inbound rate limit: Setting the inbound rate limit is possible on DSL ports,
but is likely of less interest than on Ethernet ports, since the DSL data rates
are primarily limited by the rate of the DSL line. See also
and
❼ Outbound traffic shaping: Setting the outbound rate limit (traffic shaping)
is possible on DSL ports, but is likely of less interest than on Ethernet ports,
since the DSL data rates are primarily limited by the rate of the DSL line.
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