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

Circuit packs, channel service units, and power supplies
TNCCSC-1 PRI to DASS converter
The TNCCSC-1 circuit pack converts ISDN-PRI to a Direct Access Secondary Storage (DASS)
interface. DASS is a 2-Mbps interface that uses a 75-Ohm coaxial transmission facility. One
TNCCSC-1 circuit pack can support two TN464 DS1 interface circuit packs. A Y-cable and an
888B 75-Ohm coaxial adapter connect to the public network facility.
TNCCSC-2 PRI to DPNSS converter
The TNCCSC-2 circuit pack converts ISDN-PRI to a Digital Private Network Signaling System
(DPNSS) interface. DPNSS is a 2-Mbps interface that uses a 75-Ohm coaxial transmission
facility. One TNCCSC-2 circuit pack can support two TN464 DS1 interface circuit packs. A
Y-cable connects to the public network facility.
TNCCSC-3 PRI to DPNSS converter
The TNCCSC-3 circuit pack is the same as the TNCSSC-2 circuit pack, except that the
TNCSSC-3 has a 120-Ohm twisted pair interface.
TN-C7 PRI to SS7 converter
The TN-C7 converter provides a gateway interface between the TN464 circuit pack and the
public signaling network. The TN-C7 integrates DASS, DPNSS, and SS7 into a single circuit
pack type. The TN-C7 supports international service provider call center customers. The TN-C7
is not designed for operation in the US or Canada.
280 Hardware Description and Reference for Avaya Communication Manager