ISO/IEC 29341-26-14:2017 is compliant [1]. It defines a service type referred to herein as AddressBook.

This service provides the following functionalities:

- Managing the network address book: accessing the network address book, adding new contact information in the network address book, synchronizing the local address book of Telephony Server with the network address book etc.

- Contact Share: sharing the local/network address book's contact information with other contacts of the user.

- Personal Contact Card: enabling mangement of his/her own contact information and sharing his own information with his/her contacts.

- Contact Invitation; allow handling of the Contact Invitation from the remote party.

This service does not provide the following functionalities:

Interaction between Telephony Server and the network address book.