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Deskmaster
5.8 Special Dialling Procedure
The ISDN telephone supports special dialling procedures that can be used in the ISDN network for
example : CUG (closed user groups) or SUB (subadressing).
The keys * and # are used to activate these functions :
• * + 4 digits = dialling with subadres
• # + 2 digits between 01 and 15 = closed user group
• #* + 2 digits between 01 and 15 = closed user group access
Example for CUG dialling :
• Dial number followed by # + 2 digits
• Lift handsets or press handsfree key to dial out
Note :
Dialling with subadress or dialling into a closed user group always starts with a number followed by * and/or # key and
then the other digits.
5.9 DTMF Dialling
During a connection, the keypad is available for DTMF signals, e.g. to control a distant answering
machine. Depending on the key pressed, different tone frequences will be transmitted.
• Connection state.
• Enter the control codes from
the dialling keypad (e.g. “1234”)
5.10 D Channel Signalling
The Deskmaster allows certain network functions by entering function codes. The system (PBX or net-
work) will then respond by sending display messages to the phone or generating audible information.
Function codes will always be entered from idle state. The sequence typically starts with the * character
and ends with the # character. In between, a sequence of digits and characters may occur.
• Idle state.
• Dial keypad number.
• Lift handset or press hands free key
to start sending the D chanel info.
• System response
For the details of keypad codes available/required for your special system, please consult the
documentation provided by your system supplier.
071183#02
07118398261
connected
071183982611234
connected
Mo. 21.Feb 99 17:26
ISDN
*21*7128375#
A Message from System
HL_DM5201_GB.qxd 16-04-2003 13:24 Page 13