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:

SIP messaging, this code is usually included as 'isup-oli' parameter in the 'From' header:
  • [

(Some older implementations might use expired IETF proposal for including this code in a new SIP P-CPC header.)

See also

Created by: jht2, Last modification: Sat 10 of Jan, 2015 (00:15 UTC) by hypercube
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