Preliminary

AS2525

Rev. 1.3

Page 8

May 1999

Table 5: User programming with PIN code

Function

Symbol

Procedure

Options

Call Restriction 1

CR1

[PG] + [1] + (PIN) + [

∗] + [1] +

Key in two digits, use [MT] for blank

Call Restriction 2

CR2

[PG] + [1] + (PIN) + [

∗] + [2] +

Key in two digits, use [MT] for blank

Key Lock

[PG] + [1] + (PIN) + [#] + [6] +

[0] = unlocked and [1] = locked

Clear All Memories

[PG] + [1] + (PIN) + [#] + [7] +

Press [1] to clear

Reset To Factory

Settings

[PG] + [1] + (PIN) + [#] + [8] +

Press [1] to reset

Change PIN Code

PIN

[PG] + [1] + (PIN) + [0] +

Key in new PIN + new PIN

Press [PG] to store setting and terminate procedure

Table 6: Mode programming

Function

Symbol

Procedure

Options

Select Flash

FL

[PG] + [2] +

[0] = Flash 1 and [1] = Flash 2

Select Dialling Mode

DM

[PG] + [3] +

[0] = LD (pulse) and [1] = MF (DTMF)

Select Pause Time

P

[PG] + [4] +

[0] = Pause 1 and [1] = Pause 2

Easy Key Lock

[PG] + [5] + [3] + [9]

Toggles between locked and unlocked

Ringer Volume

[PG] + [6] +

[1] = -16 dB, [2] = -7 dB, and [3] = 0 dB (maximum)

Ringer Melody

[PG] + [7] +

[0], [1], [2], [3], or [4]

LCD Contrast

V

33

[PG] + [8] +

[1], [2], or [3] (see also AS2591 data sheet)

Bell On/Off

[PG] + [9] +

[0] = Off and [1] = On

Press [PG] to store setting and terminate procedure

Memory Allocation

The EEPROM memory consists of three areas:

A = factory settings; B = user settings; C = stored numbers

A) factory settings

B) user settings

C) stored numbers

programmed in factory

Set-up programming

User-code programming

"reset to factory settings"

…write/read by AS2525

EEPROM

Figure 6: Memory allocation for external EEPROM

The AS2525 is writing and reading to and from area B and C during normal operation and user-code programming.

Area A is protected during normal operation and contains a back-up copy of the factory settings. This back-up copy

can be loaded into area B by the user with the user-code programming procedure "reset to factory settings". The

only way to change the factory settings in area A is by set-up programming using password. After changing area A

by set-up programming, the AS2525 automatically performs a "reset to factory settings" to load this changes also

into area B.