20.5.99

kap09.fm5

Profiset 70isdn, GB: A30853-X300-B501-3-7619

Convenient and secure telephone communication

DTMF signals: off

Reactivate DTMF signalling

Press the illuminated feature key "DTMF signals: off".

Distinction between DTMF and keypad signalling

The following table illustrates the difference in the signals produced when the keys on the keypad are pressed in DTMF signalling mode (page 61) and keypad signalling mode (page 61). The table takes into account the vari- ous system configurations which support Profiset 70isdn operation.

Type of signalling with

Keys transmit:

DTMF/keypad number

system configuration:

 

feature keys:

 

 

 

DTMF signalling with

DTMF signals

Character string in DTMF

main station

 

 

 

 

 

Keypad signalling with

Keypad information

Character string as keypad

main station

element (IE)

information elements (IE)

 

 

 

DTMF signalling with

DTMF signals

Character string as keypad

CENTREX

 

information elements (IE)

 

 

 

Keypad signalling with

Keypad information

Character string as keypad

CENTREX

element (IE)

information elements (IE)

 

 

 

DTMF signalling with

DTMF signals plus called

Character string as DTMF

S0 extension*

party number (IE)

signals plus called party

 

 

number (IE)

Keypad signalling with

Called party number (IE) only

Character string as called

S0 extension*

 

party number only

DTMF signalling with

DTMF signals

Character string in DTMF

point-to-point configuration

 

 

 

 

 

Keypad-signalling with

Keypad information

Character string as keypad

point-to-point configuration

element (IE)

information elements (IE)

 

 

 

*"S0 extension" refers to Siemens 8818/A6 systems and the Octopus systems available from Deutsche Telekom AG.

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Page 74
Image 74
Siemens 70isdn operating instructions Distinction between Dtmf and keypad signalling, Reactivate Dtmf signalling