Date: Wed, 30 May 2001 12:53:19 +0300 From: Juha-Matti Liukkonen <jml@cubical.fi> To: ren hao <shenhua@mailasia.com> Cc: freebsd-isdn@freebsd.org Subject: Re: Could you help me? Message-ID: <3B14C30F.A822002D@cubical.fi> References: <20010530064332.14891.qmail@mailasia.com>
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Hi, FreeBSD's ISDN support is best used with the normal 'ppp' daemon, see manual pages ppp(8), tun(4) and /usr/share/examples/ppp for configuration samples (basically, use 'set speed sync' in /etc/ppp.conf). The ppp daemon supports multilink (use 'set mrru <value>'). There is also a kernel ppp driver, but I personally find it lacking in functionality for general use (can use only one set of credentials -> not usable for multiuser dialins, no multilink capability). For raw telephony, use /dev/i4btel#, in isdnd.rc set "b1protocol=raw". Access to the device (read+write) should be done in (multiple of) 2048 byte blocks. You can dial out on i4btel# by writing string "Dnnnn" to the corresponding i4bteld# (the 'd' stands for 'dialer'), and hang up by writing "H". This script dials out on i4btel0 to the number given as its argument, outputs an .au file, and records the response (max 60 seconds=240 2K blocks): #!/bin/sh unit=0 # dial out echo -n > /tmp/.$unit.$1 echo -n "D$1" > /dev/i4bteld$unit # wait for call to be connected (regexpr event removes the file) maxwait=30 while [ "$maxwait" -gt "0" -a -e /tmp/.$unit.$1 ]; maxwait=`expr $maxwait - 1` sleep 1 done if [ "$maxwait" = "0" ]; then # timeout, no answer rm -f /tmp/.$unit.$1 exit 1 fi # send our message dd if=/usr/lib/isdn/message.au of=/dev/i4btel$unit bs=2k # flush the input queue & record reply, max 60 sec isdntelctl -u $unit -c dd if=/dev/i4btel$unit of=/var/tmp/reply.$1.au bs=2k count=240 # hang up to be sure the line doesn't stay up echo -n "H" > /dev/i4bteld$unit I hope this helps you to get started, - Juha ren hao wrote: > > dear sir: > How are you! > I am a programmer from china,I am working ISDN, I got your email addresses from FreeBSD website,could I ask you several questions? > First,How isdn4bsd support the Layer 2 PPP encapsulation,whether does it realize them by itself in isdn4bsd or depend on the FreeBSD main PPP? > Second ,How isdn4bsd do MP(MultiPoint) and bind 2 B channels? > Third,what¡¯s the raw B channel?when I need to use it except telephnoy facility? > At last,please forgive me for giving you so much trouble. > Thank you very much!! > Yours sincerely > > -- > > Get your free email from www.mailasia.com > > Powered by Outblaze > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-isdn" in the body of the message -- Juha-Matti Liukkonen, Cubical Solutions Ltd Phone: +358(0)405280142 Email: jml@cubical.fi To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isdn" in the body of the message
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