Which of the following Cisco Unified Personal Communicator features require XMPP to communicate with CUPS? (Select 2 choices.)
- availability status
- contact searches
- instant messaging
- media streaming
- softphone mode signaling
- voice mail downloads
Availability status and instant messaging (IM) require Extensible Messaging and Presence Protocol (XMPP) to communicate with Cisco Unified Presence (CUPS). XMPP is an open Extensible Markup Language (XML) IM and presence protocol. Cisco Unified Personal Communicator is software that enables a user to connect to several different communication services from a single application. CUPS is server software that integrates network traffic from several different communications services so that it can be transmitted over a Cisco Voice over IP (VoIP) network. CUPS also uses XMPP to communicate with thirdparty IM clients. In addition, CUPS uses Session Initiation Protocol (SIP) and SIP for Instant Messaging and Presence Leveraging Extensions (SIMPLE) to integrate with thirdparty clients and applications. SIP is a call signaling protocol that is used by Cisco Unified Communications Manager (UCM) to communicate with collaboration endpoints, such as Unified Personal Communicator and Jabber.
Cisco Jabber, which also uses SIP and XMPP, is an application that is intended to integrate CUPS server services, such as user availability, with Microsoft Office. Cisco Jabber is also an IM client, a voice and video call client, and a desktop sharing client.
Unified Personal Communicator uses Lightweight Directory Access Protocol (LDAP) or LDAP Secure (LDAPS), not XMPP, to perform contact searches on an LDAP directory. 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) . In addition, Cisco Unified Communications Manager (UCM), Cisco Unity Connection, and CUPS can all synchronize user accounts and contacts from an LDAP directory, such as Microsoft Active Directory.
Unified Personal Communicator uses Realtime Transport Protocol (RTP), not XMPP, for media streaming. RTP is used to transport audio or video packets between devices on a VoIP network after a connection has been established. A twoway audio session, such as a telephone conversation, requires two RTP streams: one stream originating from each device. RTP sessions are established on evennumbered User Datagram Protocol (UDP) ports ranging from 16384 through 32767. Once an RTP stream is established on a UDP port, it remains on that port for the duration of the session.
Unified Personal Communicator uses SIP, not XMPP, for softphone mode signaling. SIP is an Internet Engineering Task Force (IETF)standard call signaling protocol. Although SIP is typically used as a peerto-peer call signaling protocol, it can also operate in client/server mode. A softphone is software that behaves like a phone, enabling a user to have voice conversations over a typical workstation network connection. Softphone mode is an operational mode that Unified Personal Communicator uses to act as a softphone.
Unified Personal Communicator uses Internet Message Access Protocol (IMAP), IMAP over SSL, or IMAP over Transport Layer Security (TLS), not XMPP, for voice mail downloads. Unified Personal Communicator uses IMAP over TLS to specifically communicate with Cisco Unity Connection. For other voice mail servers, either IMAP or IMAP over SSL can be used.