AS2525 datasheet(14/26 Pages) AMSCO

14 / 26 page

Preliminary

AS2525

Rev. 1.3

Page 14

May 1999

Dialling and Control Functions

Valid Keys

The key scanning is enabled in off-hook mode with

above V

REF.

A valid key is detected from the

keyboard by connecting the appropriate row to the

column (R

ON < 1 kΩ). This can be done using an n x

m keyboard matrix with single contacts. Three diodes

and a resistor are used to extend the number of rows

(see Figure 4: Keyboard Layout).

PIN Code

A PIN code is available for protection various user

settings. The default PIN code is set to 1111 and can

be change as follows:

1. Press [PG] to enter programme mode

2. Press [1] + (PIN) + [0]

3. Key in new PIN code (valid digits: 0 - 9, #)

4. Key in new PIN code again

5. Press [PG] (= store and exit) or go on-

hook to abort

It is also possible to reset the PIN code through set-

up programming:

1. Press [PG] to enter programme mode

2. Press [0) + (Password) + [#] + [0]

3. Press [1] to reset

4. Press [PG] (= store and exit) or go on-

hook to abort

Call Restriction

A call restriction function is accommodated. This

function can be activated using the PIN code.

Storing digits for call restriction:

1. Press [PG] to enter programme mode

2. Press [1] + (PIN) + [

∗∗]

3. Press [1] for first call restriction and [2]

for second call restriction

4. Key in digits for call restriction (2 digits,

[MT] for blank)

5. Press [PG] (= store and exit) or go on-

hook to abort.

Key Lock

A key lock function is provided to allow the user to

protect the telephone from any mis-use. When this

function is available through the set-up programming,

it is possible to enable/disable the key lock using the

user PIN code.

Enabling/disabling key lock:

1. Press [PG] to enter programme mode

2. Press [1] +(PIN) + [#] + [6]

3. Press [1] for enable or [0] for disable

4. Press [PG] (= store and exit) or go on-

hook to abort

Also an easy key lock function is provided. This

function can be activated/disactivated when the key

lock function is available through set-up programming

and the previous mentioned key lock through PIN

code is disabled.

Clear Memory Procedure

It is possible to clear all stored numbers by using the

PIN code as follows:

1. Press [PG] to enter programme mode

2. Press [1) + (PIN) + [#] + [7]

3. Press [1] for clear

4. Press [PG] (= store and exit) or go on-

hook to abort

Reset to Factory Settings

It is possible to reset all settings to the default factory

settings with following procedure:

1. Press [PG] to enter programme mode

2. Press [1] + (PIN) + [#] + [8]

3. Press [1] for reset

4. Press [PG] (= store and exit) or go on-

hook to abort

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