Why does the XPhone Client cut off the leading zero of phone numbers?

Call numbers without a leading zero appear in the client's call journal. An Alcatel Lucent OmniPCX telephone system is in use.

Call numbers without a leading zero appear in the client's call journal. An Alcatel Lucent OmniPCX Enterprise telephone system is in use.

First check the dialing parameters. If they are correct, you can change a setting of the CSTA configuration of the Alcatel.

In the PBX administration, go to:

Applications -> CSTA -> Set Callback On Calling Device = YES.

This will cause the required null to be set.