| Subject | English | Polish |
| comp., MS | modem compression | kompresja modemowa (A technique used to reduce the number of characters transmitted without losing data content. The transmitting modem compresses the data and the receiving computer or modem decompresses the data back to its original state) |
| comp., MS | modem server | serwer modemów (A server that manages a group of modems. When someone on a network dials out from a computer, or dials in to a computer from another location, the server provides the next available modem to make the connection) |