We are looking at Telephone Adapters, such as those made by TeleAdapt (
http://www.teleadapt.com/web/Catalogue/Index), to go from an RJ-11 plug to phone
jacks for the following countries:

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We have seen some adapters with UL, TUV, and CE marks.  The only part of IEC 950
that looks like it would apply is Section 6.4, Protection of equipment users
from overvoltages on telecommunications networks.

Where we can find information on national or safety-agency approvals required
for Telephone Adapters?

Are there any requirements in CTR21, the latest European standard for analog
modems, that apply to Telephone Adapters?

                                                        John Barnes  Advisory
Engineer
                                                        Lexmark International

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