HL_DM5201_GB.qxd 16-04-2003 13:24 Page 13

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 :

071183#02

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

07118398261 connected

071183982611234 connected

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.

Mo.

21.Feb 99

17:26

ISDN

*21*7128375#

• System response

A Message from System

For the details of keypad codes available/required for your special system, please consult the documentation provided by your system supplier.

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Topcom 510, 500, 520 manual 071183#02, 21*7128375#, Message from System