Zyxel has a bug in s0 *AND* caller ID

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Hi all!

This problem was already reported, but ZyXEL tech support (Nick Doshi?)
could not replicate it. Maybe it will work this time. In the meantime I will
change the ATS0=255 command to ATS0=254, since this seems to cure the
problems with vgetty. Thanks for reporting this to me.

Bye,
Marc

-------------------------------------------------------------------------------
Email: Marc@ThPhy.Uni-Duesseldorf.DE
WWW:   http://WWW.ThPhy.Uni-Duesseldorf.DE/~marc/

Gunn wrote:
> 
> On Mon, 27 May 1996, James Wyatt wrote:
> 
> > David (dgunn@onramp.net) has been having problems with caller-id and
> > toll-saver with vgetty and a ZyXEL modem. I didn't have these problems
> > because I don't use toll saver or caller-id yet. He called me tonight
> > to test his hard-learned theory on what the real problem was...
> > 
> > David: You are exactly right! If you do an 'atz' and 'ats0=255s40.2=1'
> > and call, it picks up on ring #1 (not 255) and doesn't do caller ID!
> > If 's0=254' (never get there either), or 's40.2=0' (caller ID off),
> > it works fine. Odd boundary condition. I am using 'U1496E V6.15M' ROMs.
> > 
> > I am sending it to others who may be affected by the effects of this.
> > -- 
> > Remote signature file for JWyatt@RWSystems.net
> > 
> > 
> 
> I am also copying Marc Eberhard on this message, as he currently 
> maintains the vgetty code:
> 
> I patched vanswer.c, on the mgetty 0.98 source and made the following change:
> 
> ----------------- CUT HERE ----------------
> diff -urN vanswer.c.original vanswer.c
> 
> --- vanswer.c.original	Mon May 27 09:46:01 1996
> +++ vanswer.c	Mon May 27 09:47:57 1996
> @@ -150,7 +150,8 @@
>  
>      if (flag) {
>  	/* turn on the AA lamp */
> -	voice_command("ATS0=255", "OK", STDIN);
> +        /* Lowered S0 to 254 - 5/27/96 - dcg - Zyxel Bug */
> +	voice_command("ATS0=254", "OK", STDIN);
>  	fclose(flag);
>      } else {
>  	/* turn it off */
> 
> ---------------- CUT HERE ----------------
> 
> I didn't see much point in checking for the 6.15 ROM revision, since 
> decrementing the value of S0 by one won't be much of a problem for other 
> ZyXels.
> 
> -dcg
> 
> 
> !---------------------------!----------------------!
> !David Gunn          KA5WAM ! OS/2                 !
> !personal: dgunn@onramp.net !  AIX / Linux         !
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> ! http://rampages.onramp.net/~dgunn  < -- PGP KEY  !
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