ANI2

ANI2 is a 2 digit code that indentifies what kind of phone line a call is being placed from.

Common ANI2 codes are:

• 00 = Ordinary POTS call – not payphone
• 01 = Party line
• 02 = ANI Failure
• 27 = Payphone with network provided coin control
• 70 = Payphone without network provided coin control

This code is also known as:

• ANI II
• ANI info digits
• CPC (Calling Party Category)
• ISUP-OLI
• OLIP (Originating Line Information Parameter) See more codes
• CPC-GTD

In SIP messaging, this code is usually included as ‘isup-oli’ parameter in the ‘From’ header:

• [http://tools.ietf.org/html/draft-haluska-dispatch-isup-oli

(Some older implementations might use expired https://www.softarmor.com/wgdb/docs/draft-rocky-sipping-calling-party-category-01.txt IETF proposal for including this code in a new SIP P-CPC header.)

See also

• NANPA