C.30. KEYPADHASH()

C.30. `KEYPADHASH()`

KEYPADHASH(string)

Transforms an alphabetical string to digits according to the standard telephone keypad letter assignments. This enables quick conversion of vanity numbers (e.g. 1-800-BADHAIR (1-800-2234247) to actual numbers.

`1`	`2 ABC`	`3 DEF`
`4 GHI`	`5 JKL`	`6 MNO`
`7 PQRS`	`8 TUV`	`9 WXYZ`
`*`	`0`	`#`

exten => 123,1,Set(foo=${KEYPADHASH(BADHAIR)})  ; returns 2234247

Note

Internal help for this application in Asterisk 1.4:

  -= Info about function 'KEYPADHASH' =- 

[Syntax]
KEYPADHASH(<string>)

[Synopsis]
Hash the letters in the string into the equivalent keypad numbers.

[Description]
Example:  ${KEYPADHASH(Les)} returns "537"

diff output to internal help in Asterisk 1.2:

-- not available in Version 1.2 --