The TN760 tie trunk circuit pack has four ports that are used for Type 1 or Type 5 four-wire E & M lead signaling tie trunks. Trunk types include automatic, immediate-start, wink-start, and delay-dial. Each port on a TN760 circuit pack has T, R, T1, R1, E, and M signal leads. The TN760 circuit pack provides release link trunks required for the CAS feature and has administrable A-Law and µ-Law companding. The TN760 circuit pack supports outgoing, Multilevel Precedence and Preemption (MLPP).
Option switches on each TN760 circuit pack port can select connections to Type 1 E & M standard unprotected format, Type 1 E & M compatible unprotected format, Type 1 E & M compatible protected format, and Type 5 simplex format.
For Belgium, Czech Republic of Slovakia, the Commonwealth of Independent States, and the Netherlands, vintage 11 or greater is required.