J. S., Framestore CFC
B. M., London Internet Exchange
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 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.
Open service platform, Application Servers, profiles, AS interface with S-CSCF. “Normal” services (Caller ID, Call waiting, transfer…) Push to talk Over Cellular (PoC), IMS conferencing, Group management, IMS Presence, IMS Messaging. Other possible applications. Media servers. (MRFC, MRFP).
IMS PSTN procedures, BGCF, PSTN interface. SGW, MGCF, MGW
Architecture, Offline, online and flow based charging, charging reference points, CCF, DIAMETER, ICID, IOI.
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.
Why Choose Us
SNT trainers score an average of over 90% on the three main areas of:
- Ability to teach
- Technical knowledge
- Answering questions
We limit our maximum class size to 8 delegates; often we have less than this. This ensures optimal interactivity between delegates and instructor.
"Excellent course. The small class size was a great benefit…" M.B. IBM
We write our own courses; courseware does not just consist of slides and our slides are diagrams not bullet point text. A typical chapter provides clearly defined objectives with a chapter overview, slides with text underneath, a quiz at the end to check the learning of the students. Hands on exercises are at the end and are used to reinforce the theory.