Why land line telephones carries keys with numbers & alphabets???

Do u anyone know why the fixed land line telephones in our homes/offices carry keys with numbers & alphabets together? we are dialing certain numbers only.but i couldnt understand the use of alphabets.i think there is no specific use with that.if anyone of u know the reason pls answer me,i wil give u 10 points

American phone numbers are set up like this today
(444) 555-6666
in this example 444 is the area code. 555 is the exchange and 6666 is the "number"

Now, In the begining, when there wern't many telephones in the United States, some cities only had a few telephone "exchanges". Many only had one. So when you needed to call a number in, say Chicago, all the phone numbers would begin with the same first 2 or 3 numbers.

When you would ask the operator to call your uncle Bob, you might give his number as Chicago -1212. The operator would know(or look up for you) Chicago's exchange and connect you. As time progressed, and the switchboard operators job was automated, they put the letters there, so that people could easier understand that uncle Bob's number, CHI -1212 is really 265-1212.

The letters have been there ever since. The best example of this is in music, movies and television of the era.
--The Song "Pensylviana 6-5000"
--the M*A*S*H television show when Hawkeye trys to order take out from Adam's Ribs from Chicago and have them delivered
Dearborn 5-2750
--The movie "Forever Young" when Mel Gibsons character wakes up 60 years in the future and tries to call his friend.
There are many others, but these stand out in my mind

phone numbers in the olden days used to be two-letters + five-numbers, as in "Transylvannia 6-5000" (which would be dialed TR6-5000 or 876-5000) or "Silverlake 4-2532" (which would be dialed SI4-2532 or 742-2532). Thus you needed letters on the keypad as well.

They gave up this naming convention in the late '50s, and went to full 7-number phone numbers from there.

Vanity numbers. 1-800-Mattres (leave off the last s for savings)

It麓s a mnemonic aid, for example a company can use 1-800-rent-car instead of just the numbers to help you remember it.

Because some phone numbers have catchy ways to remember them.

Example: What's easier to remember, 1-800-438-5243 or 1-800-GET-LAID?

Maybe they want to be able to dial names for "speed dialing".

For advertisement. Example: Call 1-800-FOR-SALE. Get it??

For u can spel out wurds & stuff

So that business can have catchy phone numbers like 1-800-WE ARE 18 . We use the letters on the number pads to spell out the number in that fashion.

Because thats how telephone numbers used to be remembered. Ive heard my grandparents talking about have phone numbers like diamond5 and such. This was before the huge population that we have now.

A lot of companies will request telephone numbers where the numbers can spell out a word since people are more likely to remember to dial 1-800-SEE-JOEY for tickets to "Joey and Maria's Comedy Wedding" or 555-HOT-PZZA for pizza delivery or 1-800-MACGRAY for customer service for MacGray laundry machines.

The letters come in very handy that way.

Apparently, you are young...and I am not. When dialed (rotary) telephones were in use, your 7 digit phone number began with a WORD prefix, abbreviated to 2 letters...such as GRanite, RIchmond, CRescent, BAxter...your number would be said GRanite-50537, and be dialed 475-0537. When pushbutton phones came around, there were enough people old enough to still use the prefix system (and store signs/ads that still had them shown that way) that they kept the previously assigned letters on each key.