Teledynamic Communications recommends 3Com for Ethernet switching. 3Com invented ethernet in 1979 and is still the technology leader in this field.  

3Com® Family of Stackable and Edge Switches

3Com offers a wide range of packaged switches - including stackable, fixed configuration and desktop/edge products - for enterprise sites and small businesses. These versatile, reliable switches deliver performance and control where it's needed, while ensuring low total cost of ownership.

3Com 5500 Family Overview
Managed Layer 2/3/4 10/100 and Gigabit Switching. Premium, enterprise-class stackable switches for edge, distribution and core applications; meets the demanding needs of a secure, converged network.

3Com 4500 Family Overview
Managed Layer 2/3 10/100 Switching. Enterprise-class stackable switches for edge applications, meets the demanding needs of secure, converged networks.

3Com 4400 Family Overview
Managed Layer 2/4 10/100 switching. Fixed configuration. Ideal for enterprise workgroup applications needing high resiliency, traffic shaping/classification, security; Power over Ethernet version available.