J100 SIP Software Release 1.1.0.0 was made generally available in March 2017 for installation on the Avaya J129 IP Phone. This is NOT the latest release of SIP software for installation on the J129 IP Phone. The latest release is recommended for new development.
J100 Series SIP Software Release 1.1 does not support the Avaya Deskphones Push and Web APIs or any associated push types.