Mediant 2000 16 T1/PRI/E1 dual Telco connector 'Harmonica' style adaptor with Telco connector wired through to sixteen RJ-48C ports. Adapts the two Telco style ports on all 16 Span Mediant 2000s to standard physical PSTN trunk connections. LAB USE ONY - not intended for production networks. See #AC2152, Mediant 2000 Patch Panel Kit for production installations.