Data Sheet

Rev. 3

8

AS2578 /B

March 1997

OperatingProcedures

ProcedurePrinciples

The procedures for utilizing the features of the AS2578 /B are optimized out of consideration for the human factor in

order to:

- meet the user´s expectations

- be easy to learn and relearn

- not invoke any automatic functions which the user doesn´t expect

- protect the user from committing critical errors, e.g. dialling wrong numbers, etc.

- be consistent, simple and usable

- meet the German 1 TR 2 and ETR 2 specifications.

Idle (on-hook,

no ringing)

Speech mode

Programming

False programme

entry

Invalid entry

TEXT

State according

to text

Privacy mute

Ringing

KEY

Going off-hook

Going on-hook

Pressing a key

Entering a

number

Entry according

to text

TEXT

1590

Enter

password

X

sec

or

Time out (x sec.)

Dialling

(LD or MF)

Storing (writing into

RAM or EEPROM)

Processing

according to text

TEXT

Melodies activated

(ringing)

= reading from

memory

States:

Entries:

Processing:

Symbols