Dell PowerConnect Stacking Module YY741 Phones The Adtran IP 712 is

The Adtran IP 712 is designed to work with Adtran's NetVanta 7000 series phone systems

Adtran 4205290L2 Features:

Connects up to 90 IP Phones and 12 Analog lines

Toshiba DDSS3060 Add-on Module Description:

35 connections

Dell PowerConnect Stacking Module YY741 Phones The Adtran IP 712 isDell PowerConnect Stacking Module YY741 Description: The YY741 is a stacking module designed to allow stacking multiple switches to act as a single unit. This stacking module is designed to fit the 6224, 6224P, 6248, and 6248P. These stacking modules allow bandwidth up to 48Gbps. One YY741 can be fit per PowerConnect switch. Dell PowerConnect YY741 Features: 48Gbps Bandwidth Allows Stacking of Switches Compatibility: Dell PowerConnect 6200 Series