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! 9: <A HREF="mpd.html"><EM>Mpd 5.6 User Manual</EM></A>
! 10: <b>:</b> <A HREF="mpd42.html"><EM>Device Types</EM></A>
! 11: <b>:</b> <EM>Modem type commands</EM><BR>
! 12: <b>Previous:</b> <A HREF="mpd42.html"><EM>Device Types</EM></A><BR>
! 13: <b>Next:</b> <A HREF="mpd44.html"><EM>Netgraph device type commands</EM></A>
! 14:
! 15:
! 16: <HR NOSHADE>
! 17: <H2><A NAME="43"></A>5.1. Modem type commands<A NAME="modem"></A></H2>
! 18: <p>This chapter describes commands that are specific to modem type links.
! 19: These commands apply to the currently active link, and are only
! 20: valid if the currently active link has type <b>modem</b>.</p>
! 21: <p>
! 22: <dl>
! 23:
! 24: <dt><b><code>set modem device <em>devname</em></code></b><dd><p>Modem links operate over serial ports. This command tells mpd
! 25: which serial port to use for this link, and is required.
! 26: The <code><em>devname</em></code> should be the pathname of a serial
! 27: device, e.g., <code>/dev/cuad0</code>.</p>
! 28:
! 29: <dt><b><code>set modem var <em>$variable</em> <em>string</em></code></b><dd><p>Pre-sets the chat script variable <code><em>$variable</em></code> to contain
! 30: the string <code><em>string</em></code>. See
! 31: <A HREF="mpd50.html#chat">chat</A> for more information
! 32: on chat variables.</p>
! 33:
! 34: <dt><b><code>set modem speed <em>speed</em></code></b><dd><p>This commands sets the initial serial port speed when opening
! 35: the serial device, e.g., 9600, 57600, 115200. Note that you can
! 36: always change the serial port speed later from within the chat script.</p>
! 37:
! 38: <dt><b><code>set modem script <em>connect-script</em></code></b><dd><p>This command tells mpd which chat script to run in order to initiate
! 39: a PPP connection for this link. The <code><em>connect-script</em></code>
! 40: should correspond to a label in <code>mpd.script</code>. Mpd will jump
! 41: to this label after opening the serial port device. If
! 42: <code><em>connect-script</em></code> is not set, then the chat phase
! 43: of the connection is skipped (e.g., if you have a direct null modem
! 44: connection).</p>
! 45:
! 46: <dt><b><code>set modem idle-script <em>idle-script</em></code></b><dd><p>This command tells mpd what to do with the serial port when the link is
! 47: not connected. If no <code><em>idle-script</em></code> is set, then mpd will
! 48: leave the serial port closed when not connected. Otherwise, when the
! 49: link is disconnected mpd runs the <code><em>idle-script</em></code> chat
! 50: script. If this script returns <code>failure</code>, then mpd
! 51: restarts the script.</p>
! 52: <p>Otherwise, (i.e., if it returns <code>success</code>) mpd examines the
! 53: contents of the <code>$IdleResult</code> chat variable to decide what to do
! 54: next. If it equals
! 55: <code>answer</code> then mpd will assume that an incoming call has been
! 56: answered and immediately enter PPP negotiation. If it equals
! 57: <code>ringback</code> then mpd will close the serial port, reopen it,
! 58: and initiate an outgoing connection normally (i.e., using
! 59: <code><em>connect-script</em></code>). </p>
! 60: <p>If <code>$IdleResult</code> contains anything else or is not set, then
! 61: mpd acts as if <code>failure</code> had occurred and simply restarts
! 62: the script.</p>
! 63:
! 64: <dt><b><code>set modem watch <em>+/-signal ...</em></code></b><dd><p>Mpd normally tracks the carrier detect signal on the serial port
! 65: and drops the connection when this signal is lost. You can disable
! 66: this behavior with <code><b>set modem watch -cd</b></code>. Also,
! 67: mpd can do the same thing with the DSR signal, though the default
! 68: is to ignore DSR. To enable watching of the DSR signal, use
! 69: <code><b>set modem watch +dsr</b></code>.</p>
! 70:
! 71: </dl>
! 72: </p>
! 73:
! 74:
! 75:
! 76: <HR NOSHADE>
! 77: <A HREF="mpd.html"><EM>Mpd 5.6 User Manual</EM></A>
! 78: <b>:</b> <A HREF="mpd42.html"><EM>Device Types</EM></A>
! 79: <b>:</b> <EM>Modem type commands</EM><BR>
! 80: <b>Previous:</b> <A HREF="mpd42.html"><EM>Device Types</EM></A><BR>
! 81: <b>Next:</b> <A HREF="mpd44.html"><EM>Netgraph device type commands</EM></A>
! 82:
! 83:
! 84:
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