Avaya Definity TN570D Expansion Interface (Refurbished) Samsung Modular expansion lets you buy

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Avaya Definity TN570D Expansion Interface (Refurbished) Samsung Modular expansion lets you buyAvaya Definity TN570D Expansion Interface. More Information Provides interface between the TDM bus and packet bus, and fiber optic links interconnecting cabinets Used in a Port Network (PN) between a PN and another PN in a direct connect system, and between a PN and an SNI in a switch node carrier in a CSS connected system Provides control channel applications and time slot interchanging between the PPN and EPNs Used when ISDN BRI and or ASAI is