Comtech EF Data MIDAS Version 4.X Basic Configuration - Manual (Page 50)

MIDAS 4.2 Basic Configuration, Rev. 1
2–16 Setup and Operation
The display consists of the following major functional areas:
• Space Segment Graph – shows the entire bandwidth of the transponder.
♦ Each block on the graph represents one channel or allocation unit.
♦ Row and column headers label the position of the graph display within
the transponder range.
♦ Labels indicate either channel numbers or IF values, depending on the
selection of the Show Frequency option.
♦ Bandwidth can be allocated from either public or private pools. The
public pool will be allocated on a “first come, first served” basis, but
the private pools will be dedicated, guaranteed bandwidth for
customers who require it.
♦ Each block in the graph is color-coded to represent allocated
bandwidth, free bandwidth, control channels, or active calls.
♦ In ‘Display by Circuit Type’ mode, the graph is color-coded to
represent the Data, and Video circuits.
Allocated bandwidth belongs to a pool. By default, bandwidth belongs to the
public pool, but private pools can be created using the Add Bandwidth
window, in which the user can specify the pool type and parameters.
Bandwidth Pool
Setup
The Space Segment’s bandwidth allocation method is based on the use of
Bandwidth Pools. Pools are segments of bandwidth that are designated as one
of the following:
• Private pools – this pool type is used for customers that require full-time
dedicated bandwidth. Private pools are a means of having guaranteed
available bandwidth at any time. The private pool’s bandwidth is
exclusively allocated to a single customer, and will not be shared or
reallocated, even though it may be unused at certain times. In addition to
the private pool, customers can choose to have an Overflow percentage
added to their account, which allows a certain amount of excess bandwidth
to be borrowed (when available) from the Free pool, if their bandwidth
needs exceed their private pool size.
• Public pools – this pool type is for general use, and is allocated to
customers on a simple “first come, first served” basis. Customers that do
not need full-time dedicated bandwidth may use public pools.
• Free pool – this is the unused, or unallocated, portion of available
bandwidth on the transponder. The size of the free pool is constantly
changing as bandwidth is allocated from and returned to the free pool.