Verilink PRISM 3002 (34-00277) Product Manual - Manual (Page 34)

4-12 T ERMINAL C ONFIGURATION AND T ESTING
FAR LLB
A NET LLB can be activated on the far-end unit through this selection or through
the front panel TEST button.
DTE MLB
The DTE MLB command loops all network data back toward the DTE ports at the
network interface. Data is passed through to the network. Set the T1-NET Timing
to Internal when this loop is enabled.
Far LLB
This field appears when the T1 Loop is set to Far LLB. Valid options for this field
are Framed and Unframed. This setting must match the far-end unit loop code
framing.
Port Loop
This field is used to loop a high-speed data port from the network back to the
network and data from the DTE back to the DTE. The Port Loop may be activated
by receiving in-band V.54 fractional loop code or by this field. The Port Loop only
has ports with channels allocated to them as selections. Ports without channels
allocated appear as blank fields
A Port Loop is activated on the remote-end unit through this field or by the front
panel test switch. The test switch can be used to activate a remote Port 1. This
Network Interface Framer /Deframer multiplexer Receivers /Drivers
BERT Generator /
Detector
EIA-530 or V.35
(100' max.)
From
NET
To
NET
To Network
From Network
RJ48C
5
4
2
1 To
Ports
From
Ports
NET
LLB
Receivers /Drivers Framer /Deframer
Network LLB
Network Interface Framer /Deframer multiplexer Receivers /Drivers
Receivers/Drivers
BERT Generator /
Detector
EIA-530 or V.35
(100' max.)
Framer /Deframer
From
NET
To
NET
To Network
From Network
RJ48C
5
4
2
1 To
Ports
From
Ports
DTE
MLB
DTE MLB