User’s Manual

70
Chromebook
ユーザーマニュアル
内蔵モデムの適応規格（規格/プロトコルなど原文掲載）
The Chromebook with internal modem model complies with JATE
(Japan), FCC (US, Canada, Korea, Taiwan), and CTR21. The internal modem
has been approved in accordance with Council Decision 98/482/EC
for pan-European single terminal connection to the public switched
telephone network (PSTN). However due to di󱐯erences between the
individual PSTNs provided in di󱐯erent countries, the approval does not,
of itself, give an unconditional assurance of successful operation on
every PSTN network termination point. In the event of problems you
should contact your equipment supplier in the rst instance.
Overview
On 4th August 1998 the European Council Decision regarding the CTR 21
has been published in the O󱐰cial 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 justied case service) in which network addressing, if
provided, is by means of dual tone multi-frequency signalling.