AT&T DEFINITY 7100 series Manuel d'utilisateur télécharger pdf (Page 89)

PORT CIRCUIT PACKS

Tie Trunk TN760D

Has four ports used for Type 1 or Type 5 four-wire E&M lead signal-

ing tie trunks. These trunks can be automatic, immediate-start,

wink-start, and delay-dial. The TN760D serves the release link

trunks required for Centralized Attendant Service.

Tie Trunk (TN2140) — non-US Installations

The TN2140 provides four ports for four-wire E&M lead signaling tie

trunks. The TN2140 has continuous and dicontinuous E&M

signaling, administrable A-law and µ-law companding, zero dB digi-

tal loss, and standard Type 1 and Type 5 signaling.

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AT&T DEFINITY 7100 series Manuel d'utilisateur Page 89