You need a cable to connect the PC to the modem. The cable is the same as is used for
normal EIA-232 remote control, and comprises 3-wires between 9 pin ‘D’ type female connectors.

 Serial Cable Detail for Modems:

  DB9  Female at both ends of the cable

  Pin 2  ——-  Pin 2
  Pin 3  ——-  Pin 3
  Pin 5  ——-  Pin 5

  NO OTHER PINS SHOULD BE CONNECTED
1.First,Using the front panel,Check the firmware information on your Modem. The firmware information is usually found in the Main menu. Identify the reflashable product, firmware number, and version to download.

2. The files are available in two formats: *.exe (self extracting) and *.zip (compressed).  For additional help with “zipped” file types, refer to “pkzip” or “winzip”.

3.Download the correct firmware and Extract the same on your PC.

4. Extract the files on your PC.

A minimum of 3 files are extracted:

*.exe – the “uploader” executable program to apply the flash firmware data file

*.hlp – the “help” file used by the “uploader” program

*.ccc, *.cef or *.h86 – the flash firmware data file specific to the product you selected

5. Connect the PC to the device to be reflashed.

Connect the PC to the device to be reflashed using a 9-pin serial cable or USB cable. Consult the product manual to determine which connection type is appropriate.

6. To reflash the device:

From the PC, run the exe program that was extracted in step 4.

Follow the on-screen directions to apply the correct data file (*.ccc) and perform the actual reflash process.

For more information about flash updates, refer to the applicable product manual or Visit Comtech WEbsite for more details!

For Comtech CDM 600 series Modem, Refer the following details!

Product                    Loader to use    File ext

CDM-600 Modem         Flash600            CCC

Step by step Procedure !

1. Click the Loader file (the exe file Flash600.exe).
   Select your Com Port
   The baud rate is dictated by the type of Upload being done.

2. Click the Software Upload Button ,you will get a Window like the one below!

3.Click the Choose Button,you will get a window as below.

 4.Now, Choose the latest firmware file . The extention of the file is *.ccc for CDM 600 Modems. Choose the correct file and click ok.

5. Now before proceeding further, make sure your Modem is off and no cable is connected to the 25-Pin Data connector(P3B).   Turn off your modem if its on. than click start Upload.

6.Now,Switch on the Modem.

————————————–

7.Now,The modem will start upgrading the Firmware.

8.When its done,It will rebbot and query the modem for memory checksums.

Once its finished, Your modem is with the latest firmware. Now,cycle power the modem and check the main menu for the Firmware version.

 
1.Huge Geographical Coverage

You must be well aware of the limitations faced by terrestrial lines in reaching remote and other difficult locations. VSATs,on the other hand, offer you unrestricted and unlimited reach.

2.Extremely reliable
Uptime of upto 99.5 percent is achievable on a VSAT network. This is significantly higher than the typical leased line uptime of approximately 80 to 85 percent.
3.Network Management
Network monitoring and control of the entire VSAT network is much simpler than a network of leased lines, involving multiple carriers at multiple locations. A much smaller number of elements needs to be monitored incase of a VSAT network and also the number of vendors and carriers involved in between any two user terminals in a VSAT network is typically one. This results in a single point of contact for resolving all your VSAT networking issues. A VSAT NMS easily integrates end-to-end monitoring and configuration control for all network subsystems.

4.Maintenance
A single point contact for operation, maintenance, rapid fault isolation and trouble shooting makes things very simple for a client, using VSAT services. VSATs also enjoy a low mean time to repair (MTTR) of a few hours, which extends upto a few days in the case of leased lines. Essentially, lesser elements imply lower MTTR.

5.Flexibility
VSAT networks offer enormous expansion capabilities. This feature factors in changes in the business environment and traffic loads that can be easily accommodated on a technology migration path. Additional VSATs can be rapidly installed to support the network expansion to any site, no matter however remote.

6.No ‘line-of-site’ problems

7.Permanent Bidirectional symmetrical or asymmetrical Bandwidth.
 
8.Integration of Several applications : Voice over IP over a private network, Data transfer, Video conference…etc.

9.Completely invisible link: Point to point IP traffic