Hardware Description and Reference for Avaya ... - Avaya Support

TN2305B ATM-CES trunk/port-network interface for multimode fiber
Note:
Note: The path between endpoints for modem tone transmissions must use Avaya
telecommunications and networking equipment.
See Administration for Network Connectivity for Avaya Communication Manager, 555-233-504,
for more information.
TN2305B ATM-CES trunk/port-network
interface for multimode fiber
Note:
Note: This circuit pack is no longer sold.
The TN2305 provides an ATM-based replacement for the TN570D Expansion Interface. The
interface uses OC-3c or STM-1 155-Mbps multimode fiber. The TN2305 supports both trunk
and port network (PN) connectivity. As a trunk, the TN2305 uses Circuit Emulation Service
(CES) to emulate up to eight ISDN-PRI trunks on an ATM facility. As a PN expansion interface,
the TN2305 connects PNs to an ATM switch that provides PN connectivity. The TN2305
provides echo cancellation.
The TN2305 does not support hybrid PNs that use both ATM and CSS simultaneously.
TN2305s must connect all port networks through the ATM switch. Direct connect expansion port
networks (EPNs) are not supported. Category B offers are not supported.
TN2306B ATM-CES trunk/port-network
interface for single-mode fiber
The TN2306 circuit pack has the same features as the TN2305B ATM-CES trunk/port-network
interface for multimode fiber, but the TN2306 supports single-mode fiber. The TN2306B is not
available with Category B offers.
TN2308 direct inward dialing trunk (8 ports)
The TN2308 uses eight ports for immediate- or wink-start direct inward dialing (DID) trunks for
Brazil. Each port has tip and ring signal leads.
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