circuits in comment and analysis
Peter Cochrane's Blog: Software - keep it short and sweet
Comment Thousands of features have gone unnoticed and unused, while hard drives have had to grow from megabytes to gigabytes, and operating speeds have tended to stabilise or slow down despite the increased power and energy consumption of our... [07 Sep 2009]
Peter Cochrane's Blog: A petabyte before I die...
Comment Gordon Moore's 1965 observation that the density of transistors on integrated circuits - and hence to some extent computational power - would double every 24 months seemed correct for quite a while. Written in a coffee... [14 May 2008]
The Weekly Round-Up: 27.07.07
Round-Up This usually buys enough time to make a swift escape before the inevitable regression leads to earnest inquiries about the nature of computers, circuits and electricity. Kids these days don't know they're born. [27 Jul 2007]
Peter Cochrane's Blog: NGNs - real or imaginary?
Comment My first (personal) experience of a NGN came with the arrival of the transistor which immediately reduced equipment sizes and power consumption, and increased the number of speech circuits per pair. The next NGN involved... [02 May 2007]
Peter Cochrane's Blog: No more copper - fibre rules
Comment All the copper and microwave radio long-lines circuits had been relegated to the files of history, turned over to a lesser role of broadcast distribution and emergency stand-by use. Written whilst flying Gwangju to Seoul... [07 Sep 2006]
VoIP primer: How it works - and what the jargon means
Comment Even the migration from analogue to digital circuits did little to change this model. Ever wondered how IP telephony actually works? What jitter means or how packet loss is another's gain? Elizabeth Biddlecombe explains... [10 Feb 2005]
How CIOs mitigate VoIP's risks
Comment Most voice networks in organisations are under-utilised, under-supported and have very little resilience compared with the backup links and redundancy built into most data networks, even if its ISDN backups to leased... [09 Sep 2004]
Peter Cochrane's Uncommon Sense: VoIP spam - it's coming
Comment This is an impressive number that is not easily achieved without the duplication of switching and control circuits and power supplies. Everyone's looking to voice over IP as the great hope for telecom. [08 Sep 2004]
IP equals new alliances - get used to it
Comment Although there are no PVCs [permanent virtual circuits] to maintain," explains Black, "MPLS is replacing multiple networks, so there is a requirement to support multiple applications over a single network. [20 Aug 2003]
What are IP VPNs good for?
Comment Businesses currently looking to sweat their customer premise equipment (CPE) investments are looking to replace their permanent WAN links with IP VPN virtual circuits to gain a competitive advantage. IP VPNs are now... [29 May 2003]
Peter Cochrane's Uncommon Sense: Circuit or packet, clean or dirty?
Comment It was the need for computer communication that created the packet switched philosophy to obviate the need for 100 per cent dedicated circuits. Today we communicate and the majority of us have absolutely no idea how the... [14 May 2003]
Peter Cochrane's Uncommon Sense: Reliability and downtime
Comment It dictates the use of multiple battery power supplies, generally backed-up by diesel generators, with many items of the control and switchgear at least duplicated by hot-standby circuits. Is 'five nines' uptime... [12 Mar 2003]
Peter Cochrane's Uncommon Sense: G force
Comment Instead of 1,000s of transistors, capacitors, resistors and wire leads mounted on printed circuit boards, we now have integrated circuits bonded onto substrates devoid of leads and, more importantly, almost devoid of any... [28 Nov 2002]
Devil's Advocate: WorldCom affair raises broader question
Comment So, while the internet has continued to be invulnerable to sporadic failures of equipment and circuits, it is now to be tested against the financial demise of the provider of much of its capacity. Martin Brampton thinks so. [02 Jul 2002]
Devil's Advocate: Is competition always the answer?
Comment They would then lease the circuits back to whichever operator made the best offer. Instead, BT was anxious to protect its revenues from leased digital circuits, and kept ISDN a premium priced offering. [13 Nov 2001]
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