SA589 Datasheet, PDF (6/14 Pages) Sames – LD/DTMF SWITCHABLE DIALLERS WITH DEDICATED KEYS FOR 20 MEMORIES

SA589 FAMILY
Mixed Mode Calls
In the case of a call which starts in LD mode and is switched by the user (via the *, */#, or
TONE key) to DTMF mode, only the digits dialled in LD mode will be retained. This feature
is provided to ensure security of PIN (Personal Identification Number) codes. Provided that
the number of digits dialled in LD mode does not exceed 24, they will be retained regardless
of the number of DTMF digits entered subsequently.
Memory Dialling
The SA589 provides 20 memories, each of which has a capacity of 24 digits and each of which
has its own dedicated key . The memories can save digits for dialling in LD, DTMF and Mixed
Modes and can include pauses if desired.
Programming Memories
The SA589 must be 'off-hook' and idle:
1. Press the STORE key.
2. Press the key (S00 - S19) of the memory to be programmed.
3. Enter digits to be stored (no digits will be dialled whilst programming).
4. To finish programming the memory either press the STORE key again or go 'on-hook'.
5. Repeat to programme other memories.
If more than 24 digits are entered while programming a memory, then the memory will be
cleared until reprogrammed. If any non-valid keys are pressed during programming
(e.g.LNR, TBR) they will be ignored.
Mixed mode numbers and Pauses in memory
Mixed mode (i.e. LD + DTMF) numbers are easily programmed into memory. The SELECT
pin should be set to one of the 'LD + DTMF' modes (as it would be when dialling a mixed
mode number), then the number entered using the same procedure as if dialling normally.
The first press of *, */# or TONE (according to the mask variant) will be stored as a 'change
to DTMF' and this will cause all subsequent digits to be sent in DTMF when redialling from
memory.
Similarly, pauses can be stored in memory by pressing the PAUSE key in the appropriate
position when programming.
When redialling from memory, both Pauses and LD to DTMF changeovers will cause dialling
to halt temporarily until the user presses the PAUSE/CONT key. The exception to this rule
is when an LD to DTMF changeover, is stored in the first memory location; in this case,
DTMF dialling will occur immediately when memory dialling is invoked - this allows DTMF
codes to be easily stored and sent even in a telephone where the normal dialling mode is
LD.
It should be noted that a Pause or an LD to DTMF changeover each require one memory
location.
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