Do IP phones use a different method for ringing the phone? Analog
phones hit around 90 v on the ringing circuit which puts it into a TNV-2
category not SELV. Not sure that it really matters for the discussion, but I'm
curious about how they ring.
Gary
-----Original Message-----
From: Ilan Cohen [mailto:[email protected]]
Sent: Tuesday, December 03, 2002 10:16 PM
To: 'John Woodgate'; [email protected]
Cc: Peter Merguerian
Subject: RE: CE for IP Phone
I do not think that IP phone is under the RTTE directive. For a simple
reason, voltage is limited to 48 V (SELV) and the phone itself is a SELV
unit with a microphone, a speaker and a fancy LCD.
Clearly if we "try hard" we may squeeze an IP phone under the RTTE
directive, but the proper compliance path should be LVD.
I would be surprised if an IP phone manufacturer test their product under
the RTTE.
----------------------------------------------------
Ilan Cohen
Manager, Telecom Division
I.T.L (PRODUCT TESTING) Ltd.
26 Hacharoshet St, POB 211, Or Yehuda, Israel.
Tel 972-3-5339022, Fax 972-3-5339019
[email protected], website: http://www.itl.co.il
----------------------------------------------------
-----Original Message-----
From: John Woodgate [mailto:[email protected]]
Sent: Tuesday, December 03, 2002 1:12 PM
To: [email protected]
Subject: Re: CE for IP Phone
I read in !emc-pstc that Peter Merguerian <[email protected]> wrote
(in <2D1037012914D4118DB8204C4F4F50203DDE91@ITLLTD01>) about 'CE for IP
Phone' on Tue, 3 Dec 2002:
>For Europe, does an IP telephone (all SELV) having no connection to the
>telecom network fall under the RTTE Directive or just covered by the LVD
and
>EMC Directives?
AIUI, it falls into the category in which the manufacturer can choose
either RTTE or LVD + EMCD.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
Interested in professional sound reinforcement and distribution? Then go to
http://www.isce.org.uk
PLEASE do NOT copy news posts to me by E-MAIL!
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