Please Mr. Drori and other Treggers, Do not attach any .exe files to ANY message that is send through the network !
I certainly do not consider opening or starting these files , and consider this VERY close to Spamming. Regards, Gert Gremmen Ing. == Ce-test, Qualified testing == Consultants in EMC, Electrical safety and Telecommunication Compliance tests for European standards and ce-marking Member of NEC/IEC voting committee for EMC. Our Web presence: http://www.cetest.nl List of current harmonized standards http://www.cetest.nl/emc-harm.htm 15 great tips for the EMC-designer http://www.cetest.nl/features01.htm -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of David Drori Sent: dinsdag 9 maart 1999 14:42 To: TREG Subject: Call progress tones and ringing voltage cadences for PBXs Dear Treggers, Could anyone tell me the standard practice outside North America for the following: 1. Internally generated call progress tones that PBXs transmit to their extensions; 2. Call progress tones that PBXs transmit to the public telephone network through their trunks; 3. Ringing voltage cadences, frequencies and amplitudes that PBXs transmit to POTS extensions. Are the parameters normally the same as the accepted ones for the public network in the same country (e.g., in the UK: double ringing cadences for ringback tone on extensions and trunks, and double ringing cadence of ringing voltage to the POTS extensions), or is it often the case that PBX manufacturers sell PBXs in Europe and elsewhere with the above parameters meeting North American standards? What I am trying to get at is whether it is really worth a PBX manufacturer taking the trouble to get all the tones and ringing voltage cadences to correspond to those of the public networks of each of the countries in which the PBX is to be sold, or doesn't it really matter. Is it just a matter of good human engineering practice or are there actual regulatory requirements for a PBX? If we try and get a PBX design to correspond to the public networks of each target country, will we be doing more than most manufacturers do, or will we be doing exactly what we ought to do, and what everyone else does? The countries we are interested in are as follows: UK, Sweden, Norway, Netherlands, Germany, Finland, Poland, Japan and Singapore. If the answer is that we need to follow local practice for each country, then we assume that the correct parameters are those listed in the ITU Blue Book, Rec. E.180 (worldwide) and ETSI NET 4 (Europe). By the way, here in Israel, many PBXs seem to behave according to US practice, even though this differs from the standard tones used on the Israeli public network. Thanks in advance for your replies. David Drori Novarex Enterprises Ltd., POB 2833, Luz Building, 5 Kiryat Hamada Street, Har Hotsvim, Jerusalem 91028, Israel. Tel: +972 2 586 4546 Fax: +972 2 586 5890 E-mail: [email protected]
