RTTTL (Ringtone Text Transfer Language, also known as Nokring)

RTTTL is a data format originally developed by Nokia and used to store user-composed ringtones on their Series 30 handsets. RTTTL can only produce one note at a time from a range of four octaves and is therefore useful for monophonic ringtones.

An RTTTL encoded tune consists of three parts:

• The name of the tone, which is displayed on the ringtones menu.
• Various settings controlling general tempo, pitch and quaver duration.
• A sequence of standard notes represented by letters (using # and . for sharp and flat) with duration in quarter beats on their left and octave number on their right, separated by commas, eg 2e., d, 2c., b4, 1a4, c#

Example: Aqua's Barbie Girl
BarbieGirl:d=4,o=5,b=125:8g#,8e,8g#,8c#6,a,p,8f#,
8d#,8f#,8b,g#,8f#,8e,p,8e,8c#,f#,c#,p,8f#,8e,g#,f#

RTTTL (or Nokring) is commonly used when a monophonic ringtone is sent via SMS, in which case the phone will recognise the message as a tune. Software to convert MIDI data to RTTTL format is readily available.

The operator logo is the picture at the top of your phone screen which is typically a 72 x 14 pixel black and white image. This format was developed by Nokia for the transfer of images to mobile phones.

What makes this format unique is that it can be sent as an SMS and will be recognised by the phone (mostly Nokia phones, but also some Siemens models) as a graphic.

When you use 16ixty, the conversion process needed to transform a normal GIF or JPEG into an operator logo is carried out automatically.