Hi! Treggers: The CS-03 requirements are : For all operating conditions of the TE, the maximum power shall not exceed the following when averaged over any 3-s interval: (a) 0 dBm when DTMF is used for network control; (b) 0 dBm when DTMF is used for end-to-end signalling via manual entry of a keypad or repertory dialler. The term "repertory dialler" does not accommodate devices capable of generating more than 40 DTMF digits per manual keystroke. All other requirements such as tone specifications, maximum differences in power levels, etc. have been removed when the new Issue (Issue 8) is published June 15, 1996 and become effective August 14, 1996.
Merry Christmas and Happy New Year!! Henry Mar Industry Canada [email protected] ---------- From: treg[SMTP:[email protected]] Sent: Tuesday, December 17, 1996 3:12 PM To: treg Subject: Re: US DTMF Requirements Peter, The FCC Part 68 DTMF requirements are not very extensive. Power, with three second averaging, must not be greater than 0 dBm into 600 Ohms, (or .775 V) There are no frequency or twist specifications. Industry Canada CS-03 has requirements, I believe they are the same as TIA-496. Eric Petitpierre Pulsecom Herndon, VA [email protected] ______________________________ Reply Separator _________________________________ Subject: BOUNCE [email protected]: Non-member submission from ["Pete Author: [email protected] at SMTP List-Post: [email protected] Date: 12/17/96 1:39 PM From: "Pete Van Raalte" <[email protected]> To: [email protected] List-Post: [email protected] Date: Tue, 17 Dec 1996 10:11:53 EST Subject: US DTMF Requirements TREG'ers, I am looking for specs on DTMF frequency, amplitude, and twist in the US. I have found one listing in ANSI/EIA/TIA-496-A-1989, but I have not found anything in FCC requirements. Is DTMF specified somewhere in the bowels of Part 68? advTHANKSance Pete -------------------------------------------------------------------------- -- Peter Van Raalte | Email: [email protected] Compliance Engineer | V-Band Corporation | Phone: 914-789-5117 565 Taxter Road | Elmsford NY 10523 | FAX: 914-347-3432 -------------------------------------------------------------------------- -
