AT&T DEFINITY 7100 series Manuel d'utilisateur télécharger pdf (Page 81)

PORT CIRCUIT PACKS

CO Trunk (TN447) — non-US Installations

The TN447 provides eight analog CO trunk ports. Each port has tip

and ring signal leads and connects to a two-wire analog line. The

TN447 has the following attributes:

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Ground-start trunk signaling

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50 Hz periodic pulse metering (PPM) detection and

counting

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Administrable timers

CO Trunk (TN465 and TN465B) —

non-US Installations

The TN465 provides eight analog CO trunk ports and has the fol-

lowing attributes:

Loop-start trunk signaling

16 kHz PPM detection and counting

Administrable timers

The TN465B also provides battery reversed signaling.

CO Trunk TN747 or TN747B or C

Provides eight ports for loop-start or ground-start central office

(CO), foreign exchange (FX) and Wide Area Telecommunications

(WATS) trunks. A port can also be connected to a PagePac paging

system. Supports the Abandoned Call Search feature in automatic

call distribution (ACD) applications.

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AT&T DEFINITY 7100 series Manuel d'utilisateur Page 81