What is IMS architecture?
Table of Contents
What is IMS architecture?
IP Multimedia Subsystem or IMS is a standards-based architectural framework for delivering multimedia communications services such as voice, video and text messaging over IP networks.
What is VoLTE architecture?
The VoLTE logical architecture is based on the 3GPP defined architecture and principles for VoLTE UE, Long Term Evolution (LTE), Evolved Packet Core network (EPC), and the IMS Core Network.
What are the components of IMS?
IMS consists of three components:
- The Database Manager (IMS DB)
- The Transaction Manager (IMS TM)
- A set of system services that provide common services to IMS DB and IMS TM.
What are the key protocols used in IMS?
From a UE perspective IMS defines a set of protocols to be used: Session Initiation Protocol (SIP), SigComp, Real-time Transport Protocol (RTP), RTP Control Protocol (RTCP) and IP Security. Other protocol such as Diameter is involved in the IMS core but is transparent to the User Equipment.
What is MME in IMS?
The first one is Mobility Management Entity (MME). MME is the single most control point in the EPC and responsible for most of the control plane functions. The second in the list is Serving Gateway (S-GW). All IP packets in uplink and downlink flow through S-GW.
What is a call flow process?
Call flow is a customer service agent’s road map to providing solutions as speedily as possible in a call center. It provides prompts to take the correct action from the beginning of the call until the customer hangs up the phone.
What is the difference between IMS and DB2?
what is difference between db2 and imsdb? DB2 is a relational structure database and IMS is a hierarchy structure database.
What kind of database is IMS?
IMS DB is a DBMS that helps you organize business data with both program and device independence. Hierarchical databases and data manipulation language (DL/I calls) are at the heart of IMS DB.
What is Ma interface in IMS?
Interfaces description
| Interface name | IMS entities | Protocol |
|---|---|---|
| Ma | I-CSCF <-> AS | SIP |
| Mg | MGCF -> I,S-CSCF | SIP |
| Mi | S-CSCF -> BGCF | SIP |
| Mj | BGCF -> MGCF | SIP |
What is MME SGW and PGW?
MME stands for Mobility Management Entity, PGW stands for PDN gateway and SGW stands for Serving Gateway. The figure depicts LTE EPS architecture. In the figure, UE refers to User Equipment. It is the mobile phone device used to access the LTE network.
