3Com 3C900B, 3C905B

TECHNICAL QUICK REFERENCE

137

S38 0Sets an optional delay, in seconds, before a forced hang-up and clearing of the

Transmit buffer when DTR drops during an ARQ call. This allows time for a

remote modem to acknowledge receipt of all transmitted data before it is

disconnected. The modem immediately hangs up when DTR drops. This option

only applies to connections terminated by dropping DTR. If the modem receives the

ATH command, it ignores S38 and immediately hangs up.

S39-S40 Reserved

S41 0Bit-mapped register setup. To set registers, see instructions for S13.

Bit Value Result

0 1 Distinctive ring enabled.

1-7 2-128 Reserved