User’s Manual

Notebook PC User Manual 89
内蔵モデムの適応規格
（規格/プロトコルなど原文掲載）
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 accordance 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
termination 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.