Training Compendium CE

Training goals dlearning

This training provides a discussion of roaming aspects related to LTE and IMS. It starts with network architecture, and service implementation, Protocols and procedures related to roaming are presented as well, finishing with interconnection issues.

Target Audience:

  • This training is addressed for all individuals engaged in roaming implementation in LTE/IMS networks, moslty in relation to technical realisation, interconnection and service handling.

Conspect Show list

  1. Roaming architecture
    • LTE/EPS nodes
    • LTE/EPS inter-operator interfaces (Gr, Gp, S6, S8, S9, Gy)
    • Mode of operation
    • IMS architecture
    • GSMA IR65 and IR88
  2. Diameter introduction
    • Diameter Baseline Protocol
    • Functional nodes (client, server, proxy etc)
    • Diameter Routing Agent.
    • Routing in Diameter (realms, FQDN...)
    • Transport (SCTP/IP)
  3. Policy and Charging Control
    • Principles and evolution
    • Architecture
    • PCC and SAE
    • Binding (bearer, session, rules)
  4. SAE mobility and roaming scenarios
    • Home routed traffic
    • Home control and visited breakout
    • Visited control and visited breakout
    • S8 vs Gp for interconnect
    • Access control in VPLMN and HPLMN
    • Attach and TAU
    • EPS bearer activation - GTP, S8
  5. IPX
    • Architecture and functionality
    • Border nodes - BG, FW, SEG
    • Connectivity options - IPX vs GRX
    • DNS for GGSN/PGW selection
    • Diameter apects (architecture, DRA, edge agents)
    • Network Domain Security (NDS)
    • QoS handling in IPX
  6. SAE charging architecture
    • Charging identifiers
    • LTE charging architecture
    • TADIG and IREG
  7. IMS roaming and interconnect
    • IMS roaming scenarios
    • VoLTE call
    • Border nodes - IBCF and TrGW
    • Finding CSCFs in IMS
    • ENUM procedures
    • Non-IMS scenario for voice and SMS
  8. Rich Communication Services
    • RCS 5 Architecture (GSMA IR92)
    • End to end RCS architecture
    • RCS device modes, client types and device architecture
    • RCS registration procedures
    • RCS services
    • RCS interworking
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Additional information


It is expected that participants should have basic understanding of LTE and IMS networks. Any knowledge of protocols or mobility aspects of those networks will be beneficial.

Difficulty level
Duration 3 days

The participants will obtain certificates signed by Compendium CE.


Authorized Compendium CE Trainer.

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900 EUR


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Traditional training

Sessions organised at Compendium CE are usually held in our locations in Kraków and Warsaw, but also in venues designated by the client. The group participating in training meets at a specific place and specific time with a coach and actively participates in laboratory sessions.

Dlearning training

You may participate from at any place in the world. It is sufficient to have a computer (or, actually a tablet, or smartphone) connected to the Internet. Compendium CE provides each Distance Learning training participant with adequate software enabling connection to the Data Center. For more information, please visit site



Paper materials

Traditional Materials: The price includes standard materials issued in the form of paper books, printed or other, depending on the arrangements with the manufacturer.

Electronic materials

Electronic Materials: These are electronic training materials that are available to you based on your specific application: Skillpipe, eVantage, etc., or as PDF documents.

Ctab materials

Ctab materials: the price includes ctab tablet and electronic training materials or traditional training materials and supplies provided electronically according to manufacturer's specifications (in PDF or EPUB form). The materials provided are adapted for display on ctab tablets. For more information, check out the ctab website.



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