Verilink DDS Lite (34-00295.C) Product Manual - Manual (Page 18)

12 C HAPTER 3: T ESTING
Data
Set
Loop
(Non-latching)
This loop (shown in Figure 3-2) is activated by the receipt of at
least four consecutive loop commands and remains looped as
long as each third pattern byte is the loop command. It returns to
normal operation after at least four pattern bytes that are not the
loop command. This is a unidirectional loop that retransmits the
DSU received data on the DSU transmit data. Receive data is
unaffected and circuit CF is Off.
Figure 3-2 Remote Channel Loop (V.54) and Data Set Loop
V.54
Channel
Loop
This loop is activated by the receipt of the V.54 loop command.
This loop is unidirectional and returns the DSU receive data to
the DSU transmit data, and subsequently the DDS transmit data.
Receive data is unaffected.
DTE NET