Motorola 3460 - Manual (Page 106)

3460 Fast’R
A-8
Country Statutory Statements: U. K.
Although this equipment can use either loop disconnect or DTMF
signaling, only DTMF signaling performance is subject to regulatory
requirements for correct operation. It is therefore strongly
recommended that this equipment is set to use DTMF signaling for
access to public or private emergency services. DTMF signaling also
provides faster call setup.
Satisfactory operation of terminal equipment when connected in parallel
(e.g., a telephone/fax via an adapter cable or via secondary wall
socket(s)) is not guaranteed. Terminal equipment may be ringer
equivalence number (REN) marked to provide guidance in this area. As
a general guide, the telephone line normally supports devices in parallel
with a total REN of 4. To assess your installation, sum the REN ratings
of the parallel-connected terminal devices. Use a REN rating of 1.0 for
this modem.
For compliant operation of this modem, do not change S-Register 6 to a
value greater than 7.