The paper addresses a new system for collaborative vocational training of employees within industrial networks. The system should enable the industrial companies' employees, especially in SMEs, to collaborate time and cost-effectively on different training issues. The system includes a collaborative platform built following the Collaborative Reference Architecture for advanced service platforms for Collaborative Working Environments (CWE). The key layers of the platform are: Core Collaborative Services layer, orchestration layer and Content/Context Specific Collaborative Service layer. The Core Collaborative Services include services for e.g. (human) resource discovery (discovery of trainers and/or partners for collaborative learning etc.), knowledge provision (provision of e-Learning resources), selection of optimal communication services within virtual classroom (e.g. chat rooms, video meetings), learning group composition, collaboration traceability, etc.