Equinox Systems MEGAPORT Hardware Reference Manual page 28

MEGAPORT 24CS Board Telco Connector Pinouts
The wiring of the telco connectors on the MEGAPORT 24CS board is
shown in Figure 3-2. Connector A provides CS ports 1-12 and is
identical to the MEGAPORT 12CS connector. Connector B provides
CS ports 13-24.
Figure 3-2. MEGAPORT 24CS telco connector pinouts
22 Equinox MEGAPORT Hardware Reference Manual