Data Path For Dte Local Loopback; Dte Local Loopback, Front Panel Control - General DataComm DeskTop T1 Installation And Operation Instruction Manual

4-20
DTE Local Loopback
DTE or
other
signal
source
When DSU is optioned for bilateral loopbacks (switch
S10-4) a Network Payload Loopback is also initiated
when DTE Local Loopback is commanded.
Figure 4-17 Data Path for DTE Local Loopback
3. TM and LL indicators are On
during the test.
General Data-
ON SD RD
Comm
DeskTop
T1
1. T1 indicator must be Off; press T1
switch if indicator is On.
Figure 4-18 DTE Local Loopback, Front Panel Control
GDC 048R154-000
DeskTop T1 DSU
DTE Network
Interface Interface
OOF LOS BPV ALM TM T1
2. Press LL switch to start DTE Local
Loopback Test. Press switch again to
end test.
Diagnostics
Network
ST LL RL