Path: utzoo!utgpu!water!watmath!clyde!rutgers!ames!amdcad!sun!pitstop!sundc!seismo!uunet!munnari!otc!metro!ipso!stcns3!dave
From: dave@stcns3.stc.oz (Dave Horsfall)
Newsgroups: comp.dcom.modems
Subject: Trailblazers on full-duplex protocols
Message-ID: <231@stcns3.stc.oz>
Date: 9 Feb 88 14:44:13 GMT
Reply-To: dave@stcns3.stc.oz (Dave Horsfall)
Organization: Alcatel-STC Australia, North Sydney, AUSTRALIA
Lines: 37

There has been quite a bit of publicity lately in this medium on the
"Telebit Trailblazer" (R).  While it appears to run quite well on
certain arcane half-duplex protocols which I need not mention :-),
I am wondering how it performs on real full-duplex protocols.

Methinks it would lose quite a bit of its claimed throughput...

The cogniscenti will realise I am referring to the protocol in use
at most Australian sites, called variously ACSnet or SUN-III.  Actually,
ACSnet is the network itself, using the SUN-III software.  Anyway, it's
a full-duplex multi-stream protocol, so a quick estimate suggests that
you will get vastly less than the half-duplex throughput.  Especially
if the modem doesn't support SUN-III spoofing *-)

No - I'm not knocking the 'Blazer.  I'm just concerned that should
my company go out and buy a couple, it won't perform anywhere near
as well as suggested, because we talk a different language!

Anyone tried the 'Blazers on protocols other than UU**?

Oh yeah - almost forgot.  Saw several ads in the local computer
gutter press here, about the "NetComm (The Australian Company)
Trailblazer".  You know - its specs look remarkably like those of
another modem with a similar name ??!!  Wonder if it's no more than
a foreign import, with a local line interface?

And has anyone commented on someone's opinion (can't remember who,
grovel grovel) that said words to the effect that 'Blazers appear
to be more cost-effective than X.25?  We're pretty remote here,
down-under, hence the interest...  Land of the Long White Cloud,
are you listening too?

-- 
Dave Horsfall (VK2KFU)      ACS:  dave@stcns3.stc.OZ.AU
Alcatel-STC Australia       ARPA: dave%stcns3.stc.OZ.AU@uunet.UU.NET
11th Floor, 5 Blue St       UUCP: {enea,hplabs,mcvax,uunet,ukc}!\
North Sydney NSW 2060 AUSTRALIA    munnari!stcns3.stc.OZ.AU!dave