name: MMD
full_form: Multimedia Domain
context: picture shows the SIMPLE reference architecture on which it is based. Figure 5.1.2.1.4.1: SIMPLE Reference Architecture for Presence service support based on IETF [31] Presence Source The Presence Source is an entity that provides presence information to a Presence Service [31]. It can be located in the user's terminal or within a network entity. When the SIP/IP Core network corresponds with 3GPP IMS or 3GPP2 MMD networks, the Presence Source can be implemented in a UE or an AS as defined in 3GPP and 3GPP2 respectively. The following figure shows an architecture for the PNA in the case that no 3GPP/3GPP2 network represents the core. Figure 5.1.2.1.4.2: OMA Reference Architecture for Presence service support in a non-3GPP/3GPP2 case [30] Watcher The watcher is an entity that subscribes to presence information about a presentity or list of presentities (i.e. presence list) [30]. When the SIP/IP Core network corresponds with 3GPP IMS or 3GPP2 MMD networks, the watcher can be implemented
description: Multimedia Domain (MMD) is a specific type of network within the 3GPP2 architecture. It can interact with the SIP/IP Core network to support Presence services.
explanation: The text describes MMD as a network that corresponds with other core networks for service support, placing it within the category of telecommunications networks.
section_title: 5.1.2.1.4OMA
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