PbxSync (PBX synchronization utility) synchronize the internal clock of office PBX, supports the following models: Panasonic KX-TDA100/200 and KX-TDE100/200.

To connect the computer to the PBX Panasonic KX-TDA/KX-TDE you can use:
1. RS232 (serial interface). You will need null-modem cable - see recommended scheme here The cable sometimes is sold as "serial cable to establish a direct connection between two computers". For ready-made cable see AbleComm ProConnector Kits or search Google for "null modem cable purchase".
2. USB - need 'Panasonic KX-TDA USB driver'. If you have already programmed the PBX using 'Panasonic Maintenance console', the driver is already installed on your computer. If not - look on the Internet, see Google search results
3. TCP/IP network (Ethernet jack is available on CTI expansion card). To configure PbxSync need to know the network (IP) address of the PBX (ask your local network administrator) and IP address specified in the settings of PBX (see 'Panasonic Maintenance console').

The license of this software is Free Trial Software, the price is $39.00, you can free download and get a free trial.