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TN570D - AVAYA Definity Expansion Interface

TN570D - AVAYA Definity Expansion Interface
TN570D - AVAYA Definity Expansion Interface
 
TN570D - AVAYA Definity Expansion Interface
Refurbished



Product Code: TN570D
Please call 800-525-4300 or email [email protected] for the lowest current pricing and availability.

Description
 
The TN570 Expansion Interface (EI) is an interface between the TDM bus and packet bus, and fiber optic links that interconnect the cabinets. The TN570D circuit pack is 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.

The TN570 circuit pack provides control channel applications and time-slot interchanging between the PPN and EPNs. It is used when ISDN-BRI and/or ASAI is connected in an EPN.

The TN570 circuit pack carries circuit-switched data, packet-switched data, network control, timing control, and DS1 control. The TN570 circuit pack also communicates with the TN775B maintenance circuit pack in an EPN to send the EPN environmental and alarm status to the SPE.

The TN570 circuit pack is replaced by the TN2305 circuit pack or TN2306 circuit pack when an ATM switch replaces the CSS.

The TN570 circuit pack is used in an EPN that is supported by a Survivable Remote Processor (SRP).

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