Dell PowerConnect 6024F Fiber Switch Phone Systems The Atlas 550 1200550L2 has

The Atlas 550 1200550L2 has built in support for up to six cards in its factory configuration

Rackmount Kit w/ Screws

The 1200766L1 provides seven 10/100 BaseT Ethernet Interfaces for Layer 2 switching applications and one port for uplink to the Atlas 550 internal router 10/100BaseT port

The Adtran 1200755L2 provides four T1 or PRI interfaces to an Adtran Atlas 550

The ShoreTel IP 530 offers 3 lines

Dell PowerConnect 6024F Fiber Switch Phone Systems The Atlas 550 1200550L2 hasDell PowerConnect 6024F Fiber Switch Description: The Dell PowerConnect 6024F is a 24 port switch meant for aggregating various fiber connections. The Dell PowerConnect 6024F is ideal for campus network setups where the fiber lines from SFP ports can be run for much longer distances than traditional Ethernet. Eight Ethernet interfaces are included as combo ports that can be used instead of the fiber ports for local connectivity. The switch provides