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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 $
34 .\" $DragonFly: src/usr.bin/tip/tip/modems.5,v 1.2 2003/06/17 04:29:32 dillon Exp $
41 .Nd modem configuration data base
45 and their attributes are stored in an
48 is structured somewhat like the
50 file. Each line in the file provides a description for a single
52 Fields are separated by a colon (``:'').
53 Lines ending in a \e character with an immediately following newline are
54 continued on the next line.
56 The first entry is the name(s) of the modem. If there is more
57 than one name for a modem, the names are separated by vertical bars.
58 After the name of the modem comes the fields of the description. A
59 field name followed by an `=' sign indicates a string value follows. A field
60 name followed by a `#' sign indicates a following numeric value.
64 is invoked, an entry for a remote system is looked up in the
67 If the entry includes an "ACU" type capability (abbreviated at),
69 looks up the specified modem in
71 If a modem entry is found,
72 the corresponding capabilities determine how
74 programs the modem when connecting to and disconnecting from the
77 Capabilities are either strings (str), numbers (num), or boolean
78 flags (bool). A string capability is specified by
79 .Em capability Ns Ar = Ns Em value ;
80 for example, ``reset_command=ATZ\\r''. A numeric capability is specified by
81 .Em capability Ns Ar # Ns Em value ;
82 for example, ``intercharacter_delay#50''. A boolean capability is specified
83 by simply listing the capability.
84 .Bl -tag -width intercharacter_delay
87 AT command used to dial remote system (typically, "ATDT")
88 .It Cm \&echo_off_command
90 AT command to turn off command echo.
91 .It Cm \&escape_guard_time
93 The delay, expressed in milliseconds, used to frame return-to-command
95 .It Cm \&escape_sequence
97 The return-to-command escape sequence.
98 .It Cm \&hangup_command
100 AT command used to hangup modem.
101 .It Cm \&hw_flow_control
103 Enable hardware (RTS/CTS) flow control between computer and modem (DTE/DCE).
106 AT command used to initialize modem before dialing.
107 .It Cm \&intercharacter_delay
109 Delay value, expressed in milliseconds, between characters when sending commands
111 .It Cm \&intercommand_delay
113 Minimum delay value, expressed in milliseconds, to impose between commands
117 Use a fixed bit rate between the computer and the modem (DTE / DCE). The
118 bit rate is specified in
120 .It Cm \&reset_command
122 AT command to reset the modem.
125 The time, expressed in milliseconds, required by the modem to complete
126 a reset and return to a ready condition.
129 .Bl -tag -width /etc/modems -compact
133 configuration database file
143 file format appeared in