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rlands
:--e.ll
:ceive
mand
em is
that
lized,
19S:
: the
Jy,
if
·ity.
Ifa
3
of
:r bit
verse
Low-Level Modem Command Dictionary
video on a video monitor. If bit 3 of
~g
is set, parity errors will not be flagged in that manner-the
high-order bit will be cleared for all
7~bit
data received. Only
PAP I T\'?
can identify parity errors if
bit 3 of 1<2 is set.
Responses: none
G (GIVEBACK)
I
G
gi~ebaok
speoifier
t'1ODOUT
II
~'~G
1" g:CHF.::.t ( 1 :::)
Enables and disables echoing of data.
G 0
disables data echoing. In this state, data will be echoed back to
the HP-7 5 only if the host computer is "full duplex". G 1 enables data echoing for operation with "half
duplex" computers. All data will be echoed back to the HP-7S by the modem (actually echoed into the
receive buffer for
t'10D
I
r-l$
to read).
The
givebaok specifier
is set to
0
when the modem is
initialized, and its current value is preserved while the modem is off.
Responses: none
H (HANGUP)
H
t'1ODOUT
II
~'~H" :~.:CHF.:$
(
1:::)
Hangs up the modem. Places the modem on-hook and ends the communication session. The
H
command
takes a total of
3
s to place the modem on-hook. If the modem is in
MODEM
mode,
H
sends a break for
2
of
the 3 s, then places the modem on-hook.
Responses: none
I (INITIALIZE)
t'1DDOUT
II
:.~
I
II
:~.:CHf~:~t
( 1 :::)
Resets the modem to its default state, shown in the table with the
nn
T I AL I ZE
" :
t'10Dt'1"
high-level modem command in the "Keyword Dictionary". If command echoing is enabled
(E 0), I
is
echoed as this command string:
C O,E O,F 4,G O,H,K E03qSQ$q,L O,M,N 10
83
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