Figure 3.3 Example 200 Volts, 90mA
3.2.2 Description of Orion3 Interfaces
3.2.2.1 SHDSL Interface
The Orion3 devices are available with 1, 2 or 4 SHDSL interfaces. The interfaces can operate
fully independent of each other as well as they can be combined to operate in multipair mode.
Therefore all independent SHDSL interfaces and groups of SHDSL interfaces (multipair mode)
can be configured separately from each other. The multipair mode, the reservation mode and the
automatic configuration detection mode naturally limit the independent working.
All SHDSL interfaces support plesiochronous data transmission. It means that reference clock
frequencies, which are used to clock data transmission, are transmitted together with the data in
different directions of one SHDSL link. The clock frequencies of different SHDSL channels are
completely independent if they do not operate in the multipair mode.
An SHDSL channel working in the independent mode can simultaneously transmit one or several
E1 streams, Nx64 or RS-232/485 data and one WAN stream. E1 transmission is plesiochronous.
All E1 streams received by one SHDSL interface should use the same clock frequency in one
direction.
Table 3.4 Line settings per SHDSL interface, single pair
3.2.2.1.1 Master/Slave
To establish a connection, it is necessary that one transceiver side is configured as Master and
the other as Slave. In this case, the connection is controlled by the Master device.
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