Introduction
23
Model 3088A/I User Manual
2 • Configuration
Ethernet Management Port
The 3088A/I offers a 10/100 Ethernet port for configuration and management via Telnet sessions. Because the
Ethernet port is configured as MDI, a crossover Ethernet cable is required when connecting directly from a
local PC or laptop. The Ethernet interface default IP address is 192.168.200.1.
Through the Ethernet management port, the following variables can be configured or monitored:
•
Password
: The password used to login to the console (1-10 characters).
•
Circuit ID
: The circuit ID communicated to other units via EOC (1-64 characters). EOC (Embedded
Operations Channel) is an out-of-band channel specified in the G.991.2 standard for SHDSL. We use stan-
dard EOC messages for our remote loopback. The 3088A/I also supports proprietary EOC messages that
allow a 3296RC to configure it.
•
Data Rate
: The DSL data rate is set by specifying the number of 64k timeslots.
•
Annex
: Either G.991.2 Annex A or Annex B.
The following status information is available through the command line interface:
•
Configuration Mode
: Whether the 3088A/I is configured by DIP switches or software.
•
DSL Link State
:
In Progress
,
Success
,
Deactivated
, or
Idle
.
•
DSL Sync State
:
Out of Sync
,
Acquiring Sync
,
In Sync
, or
Losing Sync
.
Note
DSL Link State vs. DSL Sync State
—The DSL link state describes whether
the DSL is training (in progress), linked (success), deactivated (we don’t have
an option to deactivate the modem, so the user should not see this), or idle.
The DSL sync state describes whether no sync words have been found (out
of sync), there are no sync word errors (in sync), or whether we are transi-
tioning from out of sync to in sync (acquiring sync) or vice versa (losing
sync). Typically, when the link is training, the sync state goes from out of
sync to acquiring sync to in sync.
•
DSL Actual Rate
: The actual rate at which the DSL link is running (minus DSL overhead).
•
DSL Line Condition
:
Good
or
Poor
.
•
Noise Margin Ratio
: the maximum tolerable increase in external noise power that still allows for BER of
less than 1x 10–
7
.
•
DSL Error Counters
: The following error counters are available:
-
CRC
-
LOSW (Loss of Sync Word)
