US Robotics 56K MESSAGE MODEM - QUICK FOR WINDOWS Guia do Utilizador descarregar pdf (Página 66)

62 56K Message Modem

S21 10 Sets the length, in 10-millisecond units, of breaks

sent from the modem to the computer; applies to

MNP or V.42 mode only.

S22 17 Stores the ASCII decimal code for the XON

character.

S23 19 Stores the ASCII decimal code for the XOFF

character.

S24 0 Reserved

S25 20 Sets the duration, in hundredths of a second, that

DTR must be dropped so that the modem doesn’t

interpret a random glitch as a DTR loss. (Most users

will want to use the default; this register is useful for

setting compatibility with older systems running

under older operating software.)

S26 0 Reserved

S27 0 Bit-mapped register setup. To set the register, see

instructions for S13.

Bit Value Result

0 1 Enables ITU-T V.21 modulation at

300 bps. 1 2

Enables unencoded

(non-trellis coded) modulation in

V.32 mode.

2 4 Disables V.32 modulation.

3 8 Disables 2100 Hz answer tone to

allow two V.42 modems to

connect faster.

4 16 Enables V.23 modulation.

5 32 Disables V.32bis mode.

6 64 Disable V.42 selective reject.

1 2 ... 61 62 63 64 65 66 67 68 69 70 71 ... 74 75

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US Robotics 56K MESSAGE MODEM - QUICK FOR WINDOWS Guia do Utilizador Página 66