Epson 500 Series User Manual

Bit 012345

Unused

Bit 6

0

CCITT V.22 (1200 bps); V.21 (300 BPS B0)

1

Bell 212A (1200 bps)

Bit 7

Unused

0

Hang up

1

Attempt direct connection

2

Reserved

3

Attempt normal connection

4

Attempt V.42bis then MNP 5 connection, if fail, hang up

5 or 7

Attempt V.42bis then V.42, then MNP 5 connection, if fail, negotiate MNP 2-4

with constant terminal speed

136

Execute LAPM protocol  with no BTLZ compression

138

Execute LAPM protocol with BTLZ compression

0

Disable the negotiation process; remote modem must be configured the

same

3

Half duplex negotiation; your modem remains silent during detection

7

Enable negotiation

128

Disable negotiation; bypass the detection and negotiation phases;  proceed

at once with the fallback action specified in S36

3

Send break immediately and save data in buffers

7

Send break immediately and ignore data in buffers

128

Break is sent in sequence with the transmitted data as \K5