Which of the following interfaces handles the exchange of availability information between third-party clients
and a Cisco Presence deployment?
A.
AXL/SOAP
B.
LDAP
C.
SIP
D.
XMPP
Explanation:
The Extensible Messaging and Presence Protocol (XMPP) interface handles the exchange of availability
information between third-party clients and a Cisco Presence deployment. Cisco Unified Communications
Manager (UCM) and Cisco Unified Presence (CUPS) server together are the primary components of a Cisco
Presence deployment.
The Session Initiation Protocol (SIP) interface does not handle the exchange of availability information between
third-party clients and a Cisco Presence deployment. However, a SIP trunk interface does handle the exchange
of availability information between UCM and a CUPS server. A UCM SIP trunk interface must point to the
CUPS server in order for availability information to be exchanged between the two systems. CUPS is also
capable of sending SIP subscribe messages to UCM over the SIP trunk if UCM is configured as a Presence
gateway.
The Lightweight Directory Access Protocol (LDAP) interface does not handle the exchange of availability
information between third-party clients and a Cisco Presence deployment. However, the LDAP interface is used
to synchronize user information between UCM and CUPS in order to create a single sign-on (SSO) user
experience. For example, a Cisco Unified Personal Communicator user can be authenticated to both the CUPS
server and UCM by connecting directly to the CUPS server. LDAP is a directory protocol that is used by other
servers, such as CUPS to perform contact lookups. LDAP listens on Transmission Control Protocol (TCP) port
389 unencrypted or on port 636 over Secure Sockets Layer (SSL). Third-party XMPP clients can also use
LDAP to search the database and add users as contacts.
The Cisco Administrative Extensible Markup Language (AXL)/Simple Object Access Protocol (SOAP) interface
does not handle the exchange of availability information between third-party clients and a Cisco Presence
deployment. However, the AXL/SOAP interface is used to handle database synchronization tasks from UCM to
the CUPS database. For synchronization to start, the Sync Agent service must be started on the CUPS server.
Cisco: Cisco Unified Presence Features and Functions: Cisco Unified Presence Components