When looking at the technical details, it is important to consider the end from which call transfer is initiated. "Local" users are all SIP, ISDN or analog users who are accessible via the LANCOM VoIP Router in their own LAN. "External" users are those accessible via a line (SIP account, SIP trunk, SIP PBX, ISDN or analog).
- Active: A local subscriber initiates call transfer
- Passive: An external subscriber initiates call transfer