User's Manual
V34bis Fax-modem - AJ 2885 P
AJ 2885 P - Page 48
10.
Appendix B - Country specific information
UK
Although this equipment can use either loop disconnect or DTMF signalling, only
the performance of the DTMF signalling is subject to regulatory requirements for
correct operation. It is therefore strongly recommended that the equipment is set
to use DTMF signalling for access to public or private emergency services. DTMF
signalling also provides faster call set up.