On the Subject of Touch-Tone Telephone

'Cause I'm the right one!

In front of you will be a module, shaped like an older touch tone telephone. To solve the module, use the telephone to contact extraterrestrial lifeforms and to inform the world when you inevitably succeed.

Your phone keypad will be structured as follows:

QZ 1	ABC 2	DEF 3
GHI 4	JKL 5	MN 6
PRS 7	TUV 8	WXY 9
*	O 0	#

Step 1 - Contacting extraterrestrial life

Some letters will have faded from excessive presses of their key. The amount of presses each key needs corresponds to the amount of faded letters.

On the side of the telephone will be a sticky note with some number groups on it that look like partial phone numbers, as well as one actual phone number, which will be ignored for this step. Each of these number groups translate to two letters using the phone keypad. Together they form a specific condition in the table on page 2. Look up the 'if' section for the first letter and the 'then' section for the second.

Example: 5-44 is JH which becomes "if the current and the next press are adjacent, then the current and the next press are in the same row."

The order in which you press the keys must follow all constraints given on the sticky note. There will only be one possible sequence.

If you inputted the sequence correctly, picking up the phone will allow you to contact these lifeforms from outer space. To prevent disturbing others with unnecessary phone calls, the module will strike you if you fail to input the right phone number. Pressing the # key will clear your input if you mess up.

Table of conditions

	if	then
A	the current press is in the left column	the next press is in the left column
B	the current press is in the middle column	the next press is in the middle column
C	the current press is in the right column	the next press is in the right column
D	the current and the next press are diagonal (at 45°) from eachother (matching values count)
E	the next press is further right than the current press
F	the current and the next press contain both an even and an odd digit
G	the current press is in the top-left to bottom-right diagonal	the next press is in the top-left to bottom-right diagonal
H	the current and the next press are in the same row
I	the current and the next press are both even or both odd digits
J	the current and the next press are adjacent (including diagonals)
K	the current press is in the bottom-left to top-right diagonal	the next press is in the bottom-left to top-right diagonal
L	the current and the next press are orthogonally adjacent (excluding diagonals)
M	there is a current press	there is no next press
N	the next press is further up than the current press
O	the current press is the 0 key	the next press is the 0 key
P	the current press is the first press of its key	the next press is the first press of its key
Q	the current press is the last press of its key	the next press is the last press of its key
R	the current and the next press are in the same row or column
S	the next press is further down than the current press
T	the current press is an even digit	the next press is an even digit
U	the current press is an odd digit	the next press is an odd digit
V	the current and the next press are in the same column
W	the next press is further left than the current press
X	the current press is in the first row	the next press is in the first row
Y	the current press is in the second row	the next press is in the second row
Z	the current press is in the third row	the next press is in the third row

Step 2 - Spreading the message

When you pick up (and keep holding) the phone, you will receive their message. Lucky for you there are subtitles... in their own language. There is a code at the top and some symbols over some of the keys.

Unknown symbols in the number at the top will be shown as square boxes. Aside from this, only one symbol can represent any specific digit. Symbols on top of the keypad represent the digit on the key they are over. Other symbols may need their value to be inferred.

What you do know about the number is that it follows the rules on your note, just like their phone number. Using this, determine the number they transmitted to you.

Dropping the phone will end the call and revert the keypad to its initial appearance. You can always input the phone number to get back in a call with them.

Send a message to your local radio station by pressing *, followed by the phone number on the sticky note, another * and finally the number the aliens gave you.

Again, sending a message to the wrong person is not very friendly, so the module will strike you as a punishment for a mistake like this. Especially do not send the number to the aliens. They might realise you're trying to leak information and that could mean real trouble. Additionally, sending an incorrect message will strike you for spam.

When you are ready to send the message, type * to send it. Pressing the # key will once again clear your input if you mess up. When you succeed, the module will solve. The people may believe you, or they might not, but you did what you had to.