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32 .\" @(#)modems.5 3/24/95
33 .\" $FreeBSD: src/usr.bin/tip/tip/modems.5,v 1.5.2.5 2001/08/16 13:17:07 ru Exp $
40 .Nd modem configuration data base
44 and their attributes are stored in an
47 is structured somewhat like the
49 file. Each line in the file provides a description for a single
51 Fields are separated by a colon (``:'').
52 Lines ending in a \e character with an immediately following newline are
53 continued on the next line.
55 The first entry is the name(s) of the modem. If there is more
56 than one name for a modem, the names are separated by vertical bars.
57 After the name of the modem comes the fields of the description. A
58 field name followed by an `=' sign indicates a string value follows. A field
59 name followed by a `#' sign indicates a following numeric value.
63 is invoked, an entry for a remote system is looked up in the
66 If the entry includes an "ACU" type capability (abbreviated at),
68 looks up the specified modem in
70 If a modem entry is found,
71 the corresponding capabilities determine how
73 programs the modem when connecting to and disconnecting from the
76 Capabilities are either strings (str), numbers (num), or boolean
77 flags (bool). A string capability is specified by
78 .Em capability Ns Ar = Ns Em value ;
79 for example, ``reset_command=ATZ\\r''. A numeric capability is specified by
80 .Em capability Ns Ar # Ns Em value ;
81 for example, ``intercharacter_delay#50''. A boolean capability is specified
82 by simply listing the capability.
83 .Bl -tag -width intercharacter_delay
86 AT command used to dial remote system (typically, "ATDT")
87 .It Cm \&echo_off_command
89 AT command to turn off command echo.
90 .It Cm \&escape_guard_time
92 The delay, expressed in milliseconds, used to frame return-to-command
94 .It Cm \&escape_sequence
96 The return-to-command escape sequence.
97 .It Cm \&hangup_command
99 AT command used to hangup modem.
100 .It Cm \&hw_flow_control
102 Enable hardware (RTS/CTS) flow control between computer and modem (DTE/DCE).
105 AT command used to initialize modem before dialing.
106 .It Cm \&intercharacter_delay
108 Delay value, expressed in milliseconds, between characters when sending commands
110 .It Cm \&intercommand_delay
112 Minimum delay value, expressed in milliseconds, to impose between commands
116 Use a fixed bit rate between the computer and the modem (DTE / DCE). The
117 bit rate is specified in
119 .It Cm \&reset_command
121 AT command to reset the modem.
124 The time, expressed in milliseconds, required by the modem to complete
125 a reset and return to a ready condition.
128 .Bl -tag -width /etc/modems -compact
132 configuration database file
142 file format appeared in