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28 .\" @(#)modems.5 3/24/95
29 .\" $FreeBSD: src/usr.bin/tip/tip/modems.5,v 1.5.2.5 2001/08/16 13:17:07 ru Exp $
30 .\" $DragonFly: src/usr.bin/tip/tip/modems.5,v 1.2 2003/06/17 04:29:32 dillon Exp $
37 .Nd modem configuration data base
41 and their attributes are stored in an
44 is structured somewhat like the
46 file. Each line in the file provides a description for a single
48 Fields are separated by a colon (``:'').
49 Lines ending in a \e character with an immediately following newline are
50 continued on the next line.
52 The first entry is the name(s) of the modem. If there is more
53 than one name for a modem, the names are separated by vertical bars.
54 After the name of the modem comes the fields of the description. A
55 field name followed by an `=' sign indicates a string value follows. A field
56 name followed by a `#' sign indicates a following numeric value.
60 is invoked, an entry for a remote system is looked up in the
63 If the entry includes an "ACU" type capability (abbreviated at),
65 looks up the specified modem in
67 If a modem entry is found,
68 the corresponding capabilities determine how
70 programs the modem when connecting to and disconnecting from the
73 Capabilities are either strings (str), numbers (num), or boolean
74 flags (bool). A string capability is specified by
75 .Em capability Ns Ar = Ns Em value ;
76 for example, ``reset_command=ATZ\\r''. A numeric capability is specified by
77 .Em capability Ns Ar # Ns Em value ;
78 for example, ``intercharacter_delay#50''. A boolean capability is specified
79 by simply listing the capability.
80 .Bl -tag -width intercharacter_delay
83 AT command used to dial remote system (typically, "ATDT")
84 .It Cm \&echo_off_command
86 AT command to turn off command echo.
87 .It Cm \&escape_guard_time
89 The delay, expressed in milliseconds, used to frame return-to-command
91 .It Cm \&escape_sequence
93 The return-to-command escape sequence.
94 .It Cm \&hangup_command
96 AT command used to hangup modem.
97 .It Cm \&hw_flow_control
99 Enable hardware (RTS/CTS) flow control between computer and modem (DTE/DCE).
102 AT command used to initialize modem before dialing.
103 .It Cm \&intercharacter_delay
105 Delay value, expressed in milliseconds, between characters when sending commands
107 .It Cm \&intercommand_delay
109 Minimum delay value, expressed in milliseconds, to impose between commands
113 Use a fixed bit rate between the computer and the modem (DTE / DCE). The
114 bit rate is specified in
116 .It Cm \&reset_command
118 AT command to reset the modem.
121 The time, expressed in milliseconds, required by the modem to complete
122 a reset and return to a ready condition.
125 .Bl -tag -width /etc/modems -compact
129 configuration database file
139 file format appeared in