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Determining the Port for the Client
Synchronization 
The user of the mobile device must edit the user settings in between the installation and the first synchronization. The user must specify the port of the system with which the mobile device is to synchronize.
The standard port of the J2EE is used as the port. The port can be calculated as follows:
HTTP-Port=50000+(system number *100)

If the system number is 234, the standard port is:
50000 + 23400 = 73400

The standard port can vary, depending on the configuration.
When you use the new technology, you need the data for the synchronization service:
...
1. Start transaction SICF.
2. Enter MJC as the service name and choose Execute.
3. Choose Information on Port and Host (Ctrl+Shift+F12).
4. In the displayed table, you can find the name of the host, and under Service, you can see the port to be used for the synchronization.
