I still feel like a beginner and I have been at this for some time. Telecommunication means different things to different people. To compliance types, it means products that directly connect to the public network and therefore require type approval.
Anyone on the email list could go through pages explaining the different country requirements for telecommunication equipment and you would still not learn everything. I'll start with a few basics. In the US, telecommunication equipment requires Safety, emissions and telecomm approval. First you'll need to determine which standards you need to test to. Probably UL 950 for safety, FCC part 15 for EMC and FCC part 68 for telecomm. Then of course you will need to source the appropriate test labs to do the testing. Then there are manufacturing requirements on top of that. For Europe, you have the same three categories of testing and the standards would probably be EN60950 (safety) (Low Voltage Directive), EN55022 and EN50082 (Europe adds immunity to the emissions requirements) (EMC Directive), and the Telecomm Terminal Equipment (TTE) Directive (CTR3 for BRI CRT4 for PRI, etc). For safety and EMC you can self declare but it is in your best interest to test at an accredited (by the EU) test house). For the TTE you'll need a Notified Body. (Digi uses the BABT and I am quite happy with them). There are 3 routes to this type of approval and 2 of the 3 have specific quality requirements. SO the basic idea is first to determine the equipment's category, determine the appropriate test standard, determine the applicable approval route (self declaration, type examination, etc), source an accredited lab, and get the quality/manufacturing issues handled. This is a VERY quick overview. The details will keep you busy for years. My suggestion,. find a mentor quick!! and then of course wipe your social calendar clean and be prepared to spend hours reading!! Good luck Cynthia Cynthia Pleach Principle Homologation Engineer Digi International email [email protected] treg @ world.std.com 09/30/97 08:04 PM To: treg <treg @ world.std.com> @ SMTP cc: Subject: asking help. I am a such beginner about telecomunications. but I eagarly want to know about that. I have worked as a designer for a year in software company. I think graphic is one of the important thing to comunicate with computer. Could you recommand a good and easy book to know about telecomunications? Could you tell me what the definition of telecomunications is? Does it mean everything to comunicate with computer?
