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W91550DNF-1

13-MEMORY TONE/PULSE DIALER WITH LCD AND LOCK FUNCTIONS

Winbond 

W91550DN SERIES

Mute

OFF HOOK , (or ON HOOK & HFI ¡õ ), MUTE

The MUTE is switched on and off by the mute key. The function timing diagram is shown in Figure 9.

Hold Key

OFF HOOK , (or ON HOOK & HFI ¡õ ), H

1. The HOLD function is switched on and off by the hold key. When the hold function is toggled on,

the hold mark (dot of digit_6) will be lit. The function timing diagram is shown in Figure 10(a, b).

2. The HOLD key will be ignored during dialing.

Cascaded and Mixed Dialing

Cascaded Dialing

1. Definition of cascaded dialing:

In cascaded dialing, a new sequence may be pressed before the previous sequence has been sent

out completely. The following are examples of cascaded dialing:

Example 1: Normal dialing + Repertory dialing 1 + Repertory dialing 2 +...

Example 2: Repertory dialing 1 + Normal dialing + Repertory dialing 2 +...

Example 3: Redialing + Normal dialing + Repertory dialing +...

2. Normal dialing, redialing, or repertory dialing as represented by each rectangle above is treated as

one sequence.

3. At most 32 digits are allowed in cascaded dialing, but there is no limitation on the number of

sequences.

4. The content of cascaded dialing may a combination of normal dialing, redialing, and repertory

dialing. Redialing is valid only as the first key-in, however.

5. If ON HOOK , OFF HOOK , R is entered, then the cascaded dialing sequence described

in the examples above will be dialed out only if the total number of digits does not exceed 32. If the

sequence exceeds 32 digits then redialing is inhibited.

Mixed Dialing

1. Definition of mixed dialing:

The examples of cascaded dialing given above are also examples of mixed dialing except that in

mixed dialing a new sequence may be accepted only when the previous sequence has been dialed

out completely.

2. There is no limitation on the number of digits and sequences in the mixed dialing.

3. The content of mixed dialing may be a combination of normal dialing, memory dialing, or one-key

redialing.

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Publication Release Date: November 1997

Revision A3

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