Verilink AS4000 (34-00244) Product Manual - Manual (Page 128)

Test Access Module (TAM)
8-6 Verilink AS4000 User Manual
Figure 8-4 V.54 Loopback
The above diagram refers to local and remote loops on the
Diagnostics Menu (see following pages).
Local End
(all loops initiated from this end)
Remote End
DTE DCE DCE DTE
RX
TX
RX
TX
TX
RX
TX
RX
Local Loop
Remote Loop
(Data only)