V.42 error correction allows either LAPM or MNP4 error correction to be negotiated. Modems differ in the way they enable error correction. Refer to your modem documentation for the error correction methods used with your modem. Best Data Compression Data compression can be negotiated between two modems to allow for greater data throughput. Data compression standards include V.42 bis and MNP5.
Modems differ in the way they enable data compression.
Refer to your modem documentation for the data compression settings used with your modem. After the modem initialization string has been determined, perform the following steps to configure the modem. Step 1 Map a host name to a decimal port. The port number is 200x, plus the number of the TTY line. You should make sure your modem is strapped accordingly.