Re: mdmCallProgressDetect

"Mark S. Lewis" <mlewis@telebit.com> Sat, 05 February 1994 08:41 UTC

Date: Fri, 04 Feb 1994 16:03:49 -0800
Sender: ietf-archive-request@IETF.CNRI.Reston.VA.US
From: "Mark S. Lewis" <mlewis@telebit.com>
Message-Id: <9402050003.AA02638@america.Sunnyvale.Telebit.COM>
To: waldbusser+@cmu.edu
Cc: modemmgt@telebit.com
In-Reply-To: <EhIIl2a00WAr1AGh5h@andrew.cmu.edu> (waldbusser+@CMU.EDU)
Subject: Re: mdmCallProgressDetect
Reply-To: Mark.S.Lewis@telebit.com
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Content-Type: text/plain; charset="US-ASCII"

>>>>> On Thu,  3 Feb 1994 14:10:58 -0500 (EST), Steven Waldbusser <waldbusser+@CMU.EDU> said:

> Finally:
>  Mark Lewis writes:
>>Page 17: I think we should add a mdmCCCallProgressState (before
>>mdmCCCallProgressDetect) like callProgressState from V.58.  This
>>should be a read-only variable.

>  Les Brown writes:
>>5) On call progress state, this is a very transient condition, that is,
>>each state is only active for a short period of time.

> Mark Lewis writes:
>>When things get stuck, this isn't a transient state.  I think this
>>would be a helpful debug object.

> Do things ever get stuck?  The modem will time out if there is no dial
> tone detected in a short interval (5 seconds on a modem I tested).  Then
> it will time out if there is no carrier detected in a longer interval
> (50 seconds on a modem I tested).  The rest of the connection (99+%), it
> is in the same state (as far as call progress is concerned).  In order
> to ever see the noDialTone state, you would have to poll every 2.5
> second on average.  In order to ever see the noCarrier State you would
> have to poll every 25 seconds on average.  Why not just wait for the
> timeout period to expire and check the failure reason?  I agree with Les
> - I don't see how this would be used.

> Steve

Ok.  You argued me out of this.  I officially withdraw my suggestion
about mdmCCCallProgressState.  :-}

... Mark

==========--------------       Mark S. Lewis      ----------==========
Mark.S.Lewis@Telebit.com       Telebit Corp.      Voice (408) 745-3232

mdmCallProgressDetect Steven Waldbusser
Re: mdmCallProgressDetect Mark S. Lewis