Verilink FrameStart FSD (34-00291.F) Product Manual - Manual (Page 13)

G e n e r a l 7
What is New Circuit Install?
In normal FrameStart Install mode, data-flow from the Router is stopped. This
feature allows FrameStart to detect new circuits and perform PVC discovery
on new installations without interrupting service to the rest of the network.
How does FrameStart work in a typical application?
FrameStart includes three different operating modes for ease of operation.
INSTALL: LMI Mode is ON
In Install mode, the unit performs LMI sourcing based on the assumption that
data equipment is not available. The DDS and T1 CSU/DSU units source
LMI to the frame relay network, and record the status information for display
on the LCD. This includes the type of LMI, the number of DLCIs, and the
status of each PVC. User initiated menus exist in the LCD to activate PVC
discovery and PVC delay measurements on active DLCIs. After installation is
complete, set LMI Mode to OFF for normal operation.
MONITOR: LMI Mode is MON (Optional Feature)
In Monitor mode, the unit is in a non-intrusive state between the network and
the data equipment monitoring the activity on the frame relay circuit. If the
unit stops receiving LMI status responses from the network, the unit will
automatically SOURCE LMI to verify the network connection is still active.
After verification, the unit will revert to a non-intrusive monitoring mode.
Real-time PVC delay testing is not available in this mode. Also, SOS mode
can be enabled or disabled to generate alarms to a host unit. New circuits can
be added to a network and automatically detected based on the LMI
information. A specific DLCI can be selected to perform PVC discovery in
order to verify the end-to-end integrity of the new circuit without disrupting
normal operation of the overall network.
OFF: LMI Mode is OFF
In the OFF mode, FrameStart is not required based on the unit operating in a
private-line application or after the installation of frame relay circuits is
complete. Receive Levels are still displayed for the TDM network unit.
FrameStart Benefits
FrameStart equipment presents a distinct advantage over routers with integral
CSU/DSU transmission devices. FrameStart Install and Monitor provide test
capabilities that traditional CSU/DSUs cannot provide. Also, FrameStart is a
more economical solution than routers with integral CSU/DSUs that sell for
around $1,000 or more, and provide minimal diagnostic capabilities. Verilink
DDS and T1 CSU/DSU units bring your application back to the true functions
of “Intelligent” CSUs/DSUs to provide a clear point of demarcation between