imageCLASS MF4270 Basic Operation Guide

Appendix
13-6
Telephone
Connection● External telephone/external telephone with
built in answering machine/data modem
*
1
The Public Switched Telephone Network (PSTN) currently supports 28.8 Kbps modem
speed or lower, depending on telephone line conditions.
*
2
Based on ITU-T Standard Chart No. 1, MMR standard mode.
Specifications are subject to change without notice.