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Digital Subscriber Line (DSL)
EN
Data connection for private households or companies with high transmission speeds (broad-
band connection) usually for connection to the Internet. Fixed network telephone lines can
be used for the DSL connection. Due to the frequency range used, Internet use via DSL can
be used simultaneously with the telephone line. For private households, there are usually con-
nections with different transmission speeds: Asymmetric Digital Subscriber Line (ADSL). A
high download rate alongside a far lower upload speed.
Direct-Dial Number
Number used to directly dial a specific extension of a private branch exchange.
DTMF
Dual Tone Multi Frequency (see Tone Dialling)
Dual Tone Multi-Frequency (DTMF)
see Tone Dialling
Easylink
The Easylink function offers you additional options for managing external devices that are
connected to the same telephone line as your device (starting fax reception, taking over the
line, see Additional Devices). To use this function, additional telephones must be set to tone
dialling (DTMF tones).
ECM
Error Correction Mode
Encoding
The data of your fax transmission are encoded and compressed for the transmission. The
minimum standard is MH (Modified Huffmann). Better encoding methods are MR (Modified
Read) or MMR (Modified Modified Read).
Error Correction Mode (ECM)
The ECM method reduces transmission errors that result, for example, from bad telephone
lines, thereby reducing the duration of transmissions. Both of the connected fax machines
must support ECM.
Glossary · Digital Subscriber Line (DSL)¦ 131
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