Author Archives: David Chappell
Knowledge is a slippery thing. If we don’t take care we can lose it. Organizations loose it when members leave or retire without passing it on to their replacements. Suddenly the organization does not know how to do part of … Continue reading
This following story is from Lev Tolstoy’s First Russian Reader of 1875. This is my translation. As far as I know it has never before appeared in English. (You can read the original at ReadyRussian.org.) Fire Dogs A True Story … Continue reading
Basic Electrical Units A volt is a unit of electrical potential. Electrical potential in turn is the force which a power source (such as a battery) applies to a connected device in order to push electrons through it. Electrical potential … Continue reading
Those of use who work in IT are frequently called upon to explain our work to people who are less familiar with computers than we are. It should be our goal to speak and write as clearly as possible. To … Continue reading
It looks like Webmin lets you create DNS entries which BIND 9 does not like. When it sees one it refuses to load the whole zone and keeps what it has in RAM. This may go unnoticed for months until … Continue reading
Have you every wondered why we call a harsh policy “draconian”? This is one of those words which comes from the name of a famous person.
I have been grieving ever since Voicepulse canceled its flexrate program and been looking for a new low-price provider with good quality.
A common source of echo in VoIP phone systems is the telephone handsets. Of course, non-VoIP phone systems have this source of echo too, but it often is not so evident because without the buffering the echo delay is not … Continue reading
There is more to being a good VoIP telephony provider for Asterisk users than simply offering the best balance of price and reliability. Usability is also very important. Here are some things which make for a service more convenient for … Continue reading