Comtech EF Data CDM-750 - Manual (Page 129)

CDM-750 Advanced High-Speed Trunking Modem Revision 2
Front Panel Operation MN-CDM750
5–51
• Savings – XX% (shown as a percentage) is calculated using the following formula:
100 * (1- (Bytes Out/Bytes In))
• Last 10s – Calculated is calculated using the exact same formula as Savings XX% but uses
the Bytes In and Bytes Out for the past 10 seconds so an operator can see what
compression is being accomplished on current data.
After viewing the desired statistics screen(s), should it be desired to clear the statistics buffer
and re‐initialize this screen:
• First, use the ST arrow keys select the CLR: setting as Y or N (the cursor position
defaults to the CLR: setting on the on the bottom line);
• Then, either press ENTER to wipe the buffer, or press CLEAR to back out of the
command and return to the previous menu.
5.2.4.7 Monitor: Buffer
WAN Buffer Fill Status: 100%
This read‐only screen indicates the fill state of the Modem to WAN or Modem to Satellite Buffer.
When the WAN Buffer Fill Status figure is increasing, this indicates that user traffic is exceeding
the capacity of the satellite link. If the figure is decreasing, this indicates that there is more
satellite capacity than there is user traffic.
When Flow Control is Enabled (see Sect. 5.2.2.1.4 (CONFIG: INTF) GBEX Æ
FlowControl), the modem begins to send Pause Frames to any device connected
to the Ethernet Data Interfaces at approximately 87% capacity. Pause Frames
cease to be sent to the Ethernet Interfaces when the WAN Buffer Full Status drops
below 75% capacity.
Press ENTER or CLEAR to return to the previous menu.