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

TN2146 direct inward dialing trunk (8 ports)
TN2146 direct inward dialing trunk (8 ports)
Note:
Note: This circuit pack is not used in a G650 Media Gateway.
The TN2146 provides eight analog DID trunk ports for Belgium and the Netherlands. Each of
the eight ports has tip and ring signal lead. The TN2146 uses four Dual Subscriber Line Audio
processing Circuits (DSLACs). One DSLAC is used for each pair of ports. The circuits are
administered to meet trunk transmission characteristics. The DSLACs can be set to either a
resistive or complex balance impedance in the voice or AC talk path on the trunk interfaces. The
DSLACs convert analog signals to digital signals and vice-versa to match the analog DID trunks
to the digital TDM bus on the system. The TN2146 circuit pack provides either A-Law or
Mu-Law companding.
TN2147C central office trunk (8 ports)
The TN2147 has eight analog central office (CO) trunk ports. Each port has tip and ring signal
leads. The TN2147 uses four (1 for each pair of ports) Dual Subscriber Line Audio processing
Circuits (DSLACs). These DSLACs are administered to meet a given transmission and
impedance requirement. The DSLACs convert analog signals to digital signals and digital
signals to analog signals. These conversions interface the analog CO trunks to the system’s
digital TDM bus of the system.
The TN2147C provides multicountry signaling based on a trunk type of loop-start, ground start,
or battery reverse loop-start.
TN2181 DCP digital line (2-wire, 16 ports)
Note:
Note: This circuit pack is no longer sold.
The TN2181 circuit pack has 16 DCP ports. These ports can connect to 2-wire terminals such
as the 6400-, 8400-, and 9400-series digital telephones and the 302C and 302D attendant
console. The maximum range of the 8400- and 9400-series terminals using 24-AWG (0.5 mm)
wire is 3,500 feet (1067 meters).
The TN2181 circuit pack supports either A- or µ-Law companding. The TN2181 also supports
8400-series data modules.
Issue 6 February 2007 247