However, most telemedicine workstations tend to be a bit more complex. Normal interactive workstations are built onto a personal computer. The computer runs the medical record software and integrates the videoconferencing and file transfer capabilities of the workstation. The codec understands a videoconferencing protocol and permits the exchange of information between telemedicine systems. Communication with other telemedicine workstations is accomplished through various types of communications and networking hardware.
Many workstations employ a special file transfer card to transmit data to another site.
These can range from cards designed to communicate via the V.35 protocol to normal modems and ethernet cards. Many ISDN workstations make use of an inverse-multiplexor to bond multiple ISDN lines into a single interface useable by the codec or file transfer board. This system is used primarily for corrections health. Additionally, it uses a fourth line for file transfer at 128 kbps and a fifth for the digital stethoscope . It has a complete integrated patient record.