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000426_news@newsmaster….columbia.edu _Tue Sep 1 10:27:34 1998.msg
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From: fdc@watsun.cc.columbia.edu (Frank da Cruz)
Newsgroups: comp.os.vms,comp.protocols.kermit.misc
Subject: Re: How I implemented an application using C-Kermit for VMS
Date: 1 Sep 1998 14:27:33 GMT
Organization: Columbia University
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References: <6s1kq5$65p$1@client3.news.psi.net> <6sfhis$4hi$1@jetsam.uits.indiana.edu>
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In article <6sfhis$4hi$1@jetsam.uits.indiana.edu>,
jeff l sue <jsue@cs.indiana.edu> wrote:
: In article <6s1kq5$65p$1@client3.news.psi.net>,
: Bob Kennedy <bkennedy@peco-energy.com> wrote:
: >
: > [...]
: >
: > C-Kermit opened up the door for us to perform this proactive search
: >for problems and a means by which to contact us in the event of an
: >emergency with a well-defined "English" message. This is most effective
: >around 03:30 in the morning when the system calls to tell us that DAS is
: >down, or any other type of problem. If we were still using that "Digital
: >pager", we would need to find, then lookup the code describing the
: >problem. This, for most of us, is difficult t three in the morning.
:
: I totally agree that C-Kermit is a good product.
: But, what do you do if someone doesn't receive a page for an error message?
: This happens for lots of reasons in my world.
:
That's the good thing about alpha paging. TAP is a protocol that lets the
page sender know whether the page was delivered successfully -- at least to
the paging service. Of course it is the paging service's responsibility
to deliver it to the pager. And of course it is also the responsibility of
the person carrying the page to read the page promptly and respond to it,
but that's somewhat beyond software control.
When TAP says the page was not delivered, the Kermit script can be coded to
retry until it is, requeue for later transmission, send the page to an
alternative destination, or any other desired recovery procedure.
This is in sharp contrast to beepers and numeric pagers, for which no
feedback is available, which makes it impossible for Kermit (or any other
software) to know whether a page was sent successfully.
- Frank