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Essential IMS

By Systems & Network Training

5.0(3)

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£2,477

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Highlights

Delivered Online or In-Person
You travel to organiser or they travel to you
Redhill
Two days
All levels

Description

Essential IMS training course description

The IP Multimedia Core Network Subsystem (IMS) is defined by 3GPP as a new mobile infrastructure. This course studies the discreet elements in the IMS.

What will you learn

Describe the IMS.

Describe the IMS architecture.

Explain how charging, security and QoS is handled in the IMS.

Explain how the IMS supports service enablers such as Push to talk and Presence.

Essential IMS training course details

Who will benefit:

Telecommunications staff.

Prerequisites:

Mobile communications overview

Duration

2 days

Essential IMS training course contents

Mobile communications review

The role of IP in telecommunications. GSM to IMS. Enhanced multimedia services, Push To, convergence, conferencing, roaming.

What is IMS?

What it is, why IMS, standard bodies: 3GPP, IETF, OMA, IMS services. MMD comparison.

IMS architecture blocks

Overview, IMS functions, IMS interfaces, IMS protocols, IMS elements, IMS reference points. Access network, IMS in GSM, CDMA, WiFi & PSTN networks. Core network. Application, Control and Call planes.

HSS - User database

Identification. The user database, role of HSS, SLF and multiple HSSs. 'Normal' identities, IMPI, IMPU.

IMS signalling: SIP

What is SIP? SIP URI, contact address, UAs, Proxies, basic SIP call flow, SIP sessions.

IMS other protocols

Megaco, Diameter, XML, XCAP, COPS, RTP/RTCP, SDP, H.324M, IM and MSRP.

Call/Session Control

Call Session Control Functions (CSCF). Domains. Home networks, visited networks. CSCF and SIP. P-CSCF, P-CSCF discovery, P-CSCF functions. I-CSCF, DNS and I-CSCF. S-CSCF, S-CSCF functions, ENUM lookups. QoS. Example call flows.

IMS services

Open service platform, Application Servers, profiles, AS interface with S-CSCF. 'Normal' services (Caller ID, Call waiting, transferâ¦) Push to talk Over Cellular (PoC), IMS conferencing, Group management, IMS Presence, IMS Messaging. Other possible applications. Media servers. (MRFC, MRFP).

Gateways

IMS PSTN procedures, BGCF, PSTN interface. SGW, MGCF, MGW

Charging

Architecture, Offline, online and flow based charging, charging reference points, CCF, DIAMETER, ICID, IOI.

IMS security

IMS security architecture, identities, AAA, public and private user ID, service filters, Cx interface, RADIUS, Diameter protocol, 3GPP AKA, integrity, privacy, NDS, IPSEC, trust, assertion.