> To: treg <[email protected]>
> From: Joe Dwyer/Inter-Tel <joe_dwyer%[email protected]>
> Date: 28 May 96 9:29:12 MS
> Subject: Japan Ring Specs
> Mime-Version: 1.0
> Content-Type: Text/Plain
>
> Peter
>
> These two had been posted on TREG back in November.
>
> =====================================================================================================
>
> To: treg @ sdd.hp.com @ SMTP
> cc:
> From: Joe Dwyer/Inter-Tel
> Date: 11/02/95 11:52:05 AM
> Subject: Ring Generator Requirements for Japan
>
>
> Source 1)
> Short circuit current < 45 mA DC
> No more than 50 bits per sec i.e. < 50 Hz
> <100 V tip to ring
> < 50 V line to ground
>
> Source 2)
> 15 Hz - 20 Hz
> 20 IPM +/- 20%, Make ratio 33+/- 10% i.e. 1 second on 2 second off
> AC (75-10)V(rms) to (75+8)V(rms)
>
> The first source was CCL Labs in Salt Lake CIty. 801 972-6146 Steve Seymor.
> And
> the second source was the JATE Blue Book Article 12 Electrical Requirements
> for
> DC loop, section 3. If anyone has a more reliable source, or a different
> answer
> I like to hear about it.
>
> Thanks.
> ==============================================================
> To: treg @ sdd.hp.com @ SMTP
> cc:
> From: JPR3 @ aol.com @ SMTP
> Date: 11/02/95 05:40:43 PM
> Subject: Re: Ring Generator Requirements for Japan
>
> Joe Dwyer writes:
>
> >Awhile back I had asked TREG for information on Ring Generator Requirements
> for
> >Japan. I had not heard from anyone out there, so here is what I got from
> >another sources........
>
> ------------------------------------------------------------------------
>
> Joe:
>
> I saw your original posting, but I couldn't tell whether your interest was in
> safety requirements or functional requirements. It looks as though you are
> interested in both.
>
> As far as safety is concerned, Japan's requirements are based on IEC 950.
> I once saw a list of the Japanese deviations to IEC 950, and I don't think
> that there were any in clause 6. If this is the case, you can base the safety
> aspects of your design on clause 6.2 and Annex M of IEC 950. The
> requirements here are a bit obtuse, but that's what we have to work with.
> The information that you quoted as being from "Source 1" differs somewhat
> from what IEC 950 would dictate.
>
> In terms of functional requirements, the information that I have agrees
> 100% with that provided by your "Source 2".
>
> I hope this helps.
>
>
> Joe Randolph
> Telecom Design Consultant
> Randolph Telecom, Inc.
> =======================================================
>
> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><>
> Joe Dwyer
> Sr. Engineer International Approvals
> Inter-Tel. Tel: +1 602 961 9000
> x1235
> 7300 West Boston Street Fax: +1 602 961 1370
> Chandler, AZ 85226 U.S.A. Internet: [email protected]
> Inter-Tel designs and sells PBX and Hybrid Telephone equipment worldwide.
> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><>
> =========================================================
> Hello All,
>
> I am looking for information and specifications on ringing signals
> provided by Customer Premesis Equipment on analog ring-down lines in
> Japan. Specifically, I would like to know the requirements for:
>
> 1) Frequency ___ Hz +/- ___ Hz
>
> 2) Volts _____ rms +/_ ___ volts
>
> 3) Waveshape (sine, square, or don't care)
>
> 4) Source of the above information
>
> ADVthanksCE
>
> 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
> ---------------------------------------------------------------------------
> =========================================================================
>
