Asus A4S - Manual (Page 64)

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付録
内蔵モデムの適応規格（規格/プロトコルなど原文掲載）
適応規格とプロトコル
The Notebook PC with internal modem model complies with JATE (Japan), FCC (US,
Canada, Korea, Taiwan), and CTR21. The internal modem has been approved in accor-
dance with Council Decision 98/482/EC for pan-European single terminal connection
to the public switched telephone network (PSTN). However due to differences between
the individual PSTNs provided in different countries, the approval does not, of itself,
give an unconditional assurance of successful operation on every PSTN network ter-
mination point. In the event of problems you should contact your equipment supplier
in the first instance.
Overview
On 4th August 1998 the European Council Decision regarding the CTR 21 has been
published in the Official Journal of the EC. The CTR 21 applies to all non voice terminal
equipment with DTMF-dialling which is intended to be connected to the analogue PSTN
(Public Switched Telephone Network).
CTR 21 (Common Technical Regulation) for the attachment requirements for connection
to the analogue public switched telephone networks of terminal equipment (excluding
terminal equipment supporting the voice telephony justified case service) in which
network addressing, if provided, is by means of dual tone multifrequency signalling.
Network Compatibility Declaration
Statement to be made by the manufacturer to the Notified Body and the vendor: “This
declaration will indicate the networks with which the equipment is designed to work and
any notified networks with which the equipment may have inter-working difficulties”
Network Compatibility Declaration
Statement to be made by the manufacturer to the user: “This declaration will indicate
the networks with which the equipment is designed to work and any notified networks
with which the equipment may have inter-working difficulties. The manufacturer shall
also associate a statement to make it clear where network compatibility is dependent
on physical and software switch settings. It will also advise the user to contact the
vendor if it is desired to use the equipment on another network.”
Up to now the Notified Body of CETECOM issued several pan-European approvals using
CTR 21. The results are Europe’s first modems which do not require regulatory approv-
als in each individual European country.
Non-Voice Equipment
Answering machines and loud-speaking telephones can be eligible as well as modems, fax
machines, auto-dialers and alarm systems. Equipment in which the end-to-end quality
of speech is controlled by regulations (e.g. handset telephones and in some countries
also cordless telephones) is excluded.