Date: Sat, 12 Sep 1998 09:51:53 +0200 (MEST) From: Martin Husemann <martin@rumolt.teuto.de> To: agdolla@datanet.hu Cc: freebsd-isdn@FreeBSD.ORG Subject: Re: data over voice Message-ID: <199809120751.JAA02510@rumolt.teuto.de> In-Reply-To: <Pine.LNX.4.00.9809111858210.6492-100000@gridpoint.datanet.hu> from "agdolla@datanet.hu" at Sep 11, 98 07:01:19 pm
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> Does it support Data Over Voice (DOV) ?
>
> Here in Hungary you have to pay an extra 40 % fee for data call :((
Sorry, no, not out of the box. But it's easy to do:
You'll have to configure the right b1protocol in isdnd.rc:
b1protocol The B channel layer 1 protocol used for this con-
nection. The keyword is mandatory. The currently
configurable values are:
hdlc HDLC framing.
raw No framing at all (used for telephony).
This probably won't work, as the TelCo will make their charging decission
on the bearer capabilities. This is an outstanding issue, see
layer3/i4b_l2if.c:
/* XXX
* currently i have no idea if this should be switched by
* the choosen B channel protocol or if there should be a
* separate configuration item for the bearer capability.
* For now, it is switched by the choosen b protocol (-hm)
*/
You will have to patch that function to send the right BC (check, if your
phone rings, when you dial that number). There is an example of how to code
it in there, as "voice" may be used by the isdntest utility.
So this should answer Hellmuths question above: yes, it should be a separate
configuration item, with a reasonable default depending on the B channel
protocol.
Martin
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