Verilink AS56/56Plus (896-502588-001) Product Manual - Manual (Page 56)

Testing the Access System 56
4-2 AS56 and AS56 Plus User Manual
Testing in T1/FT1 Mode
This section discusses the various tests available for the AS56
Plus
,
operating in T1/FT1 mode.
Local Loop When the Local Loop is ON, the front panel LP LED will illuminate and
local testing can be performed by external DTE equipment or by Access
System 56’s internal BERT
SELECT as required to turn the Local loop off or on.
Diagnostics
_Ntwk Port
From Diag. Menu,
UP/DOWN to
display:
NI Diagnostics
_Local Loop..:_Off
SELECT then
DOWN to
display:
1.536 Mbps 1.544 Mbps
Local Loop OFF
(Normal Data)
1.536 Mbps 1.544 Mbps
Local Loop ON
Payload Network
Interface
Payload Networ
Interface
To
DTE
To
DTE