Man Machine Interface; Overview; Keypad Address Matrix; Table 6-1 Keypad Address Matrix - Siemens M20 Terminal Technical Description

Siemens Information and Communication Products
6

Man Machine Interface

6.1

Overview

The Siemens M20 can be operated either via an MMI or with AT+C commands. One interface only should be used at any
given time. Simultaneous operation of both interfaces has not been provided for although no algorithm preventing simul-
taneous operation of both interfaces exists.
Access to data services is performed with AT+C commands and is thus not supported by the MMI.
The main parts of the user interface are:
• LCD display (dot-matrix, 2 lines, 16 characters)
• 21 keys (12 keyblock, 9 function keys)
• Handset (microphone and loudspeaker)
• Hookswitch
• Buzzer
Note: the keypad driver supports 24 keys, though only 21 keys are used by the MMI software implemented.
6.2

Keypad address matrix

KPC0
KPR0 <KW3>,
KPR1 <KW4>
KPR2 <WW>
KPR3 <+>
KPR4 <->
KPR5 <SMS>
Table 6-1 Keypad address matrix
Keypad
<0>, <1>,..., <9>, <*>, <#>
<DIAL>
<KW1>, <KW2>...KW4>
<WW>
<SMS>
<+>
<->
Table 6-2 Description of keypad
All features offered are activated or configured using function keys or codes (menu short-cuts). The codes are selected to
conform to ETS 300 511. User guidance via menus is not supported. The user dialogs or input prompts are output in the
following languages:
• English (factory default)
• German
• French
• Portuguese
• Spanish.
Version 8 dated 15.03.00
KPC1 KPC2
<KW1>,
unused1
<KW2> <DIAL>
<1> <2>
<4> <5>
<7> <8>
<*> <0>
Keys
Dial key (OK key)
4 short keys
Redial/cursor up
Short Message
increase volume: voice/buzzer
decrease volume: voice/buzzer
KPC3
unused2
unused3
<3>
<6>
<9>
<#>
Meaning
Man Machine Interface
A
142