Short definition
DSL, VDSL, and fiber refer to different technologies for broadband internet connectivity at event venues. They form the backbone of live streaming, video conferencing, cloud services, and hybrid event formats.
Detailed explanation
DSL transmits data over standard copper phone lines, reaching downstream speeds of up to 16 Mbps (ADSL2+) or up to 100 Mbps (VDSL2). VDSL2 vectoring can hit up to 250 Mbps at favorable distances from the exchange. Fiber offers symmetrical bandwidths from 100 Mbps up to 10 Gbps and is the future-proof choice for bandwidth-heavy events.
For professional events, available upload bandwidth is the deciding factor: Full HD live streams need 8–15 Mbps upload, while 4K streams require 25–50 Mbps. With multiple parallel streams and cloud services, demand quickly climbs to 100 Mbps or more. At venues without adequate fixed-line access, 4G/5G bonding fills the gap. For events, connectivity should ideally be dedicated and backed by an SLA; redundant connections across different technologies are standard in professional productions.
Relevance in this field
A venue's internet connectivity is one of the most common technical bottlenecks at hybrid events. Clarifying network infrastructure early is mandatory for every event planner.
Practical example
For a hybrid investor conference, the existing VDSL line is supplemented with a temporary symmetrical 500 Mbps fiber connection. An LTE bonding system with four SIM cards serves as backup; all connections are tested 48 hours before the event.
Related terms
Network & IT, live streaming, hybrid event technology, bandwidth