The modem model is Z0220112VECR4078TR and it has a data transfer rate of 2.4 kbps. It supports various transmission protocols including V.21, V.22, V.23, Bell 103, and Bell 212A. The packaging style for this modem is 44-PLCC, which refers to a specific type of integrated circuit package known as Plastik-Leaded Chip Carrier.