DT Etherlink IV
User Manual
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The Slave-Modem receives the stream structure from the last Regenerator in the link and also
performs configuration
When the Slave-Modem receives configuration, it distributes the received E1 streams
information to its E1 ports. If the number of ports is not enough, it displays the RCONF alarm
and does not change the configuration of the E1 streams. Also if the E1 streams are not
distributed, the Slave-Modem receives the configurations of WAN. Therefore, the integrity of
the Ethernet link is supported.
The RCONF alarm (displayed by the <ALARM> command) means that the local and remote
equipment have incompatible configurations.
The RCONF alarm is automatically not displayed if a DSL link, in which it was detected, fails.
If the device operates in the CA mode (automatic configuration of a link), the alarm is not
displayed when the device finally adjusts to the CO side (Master).
Figure. 3.9 Automatic configuration, 4x E1 and Ethernet are transmitted over one SHDSL link
Figure 3.10 Automatic configuration Star-topology
A more complex case is the independent two-channel connection: two E1 streams and Ethernet
packets are transmitted in the first channel and the second channel. The Slave-Modem determines
the order of E1 interfaces for the streams from each DSL link only when the communication in both
links is established.
