can include a translation table for language support and may include a translation table for specially assigned keys for the hearing impaired or deaf culture tty abbreviations these include but are not limited to ga for go ahead use to signal completion of a thought and typing segment sk for ending a call hold pls for 34 hold please 34 for caller breaks and smile for indicating levity with a transmitted message the mdpe 24 formats the collected data for transmission using any of a variety of modes of operation or capabilities for example audio data may be formatted using a capability that supports the itu t g 711 g 723 or g 728 standard when using the teletype device the mdpe 24 collects and formats data for transmission according to the h 324 video phone standard the h 324 standard specifies a common method for video audio and data to be communicated simultaneously using modem connection over an analog phone line the h 324 standard uses a normal 28 800 bps modem connection between callers once a modem connection has been established the h 324 standard specifies how digital video and voice compression technologies are used to convert sounds and facial expressions into a digital signal for example the h 324 standard defines how these signals are compressed to fit within the data rate allowed by analog phone lines and modem connections fig2 is a flowchart illustrating an example method of operation of the system of fig1 from a general perspective the routine is called in response to a command to.