The 1-Port Channelized STM-1/OC-3 Shared Port Adapter data sheet states that it supports:
Up to 84 T1 (or 3 T3) or 63 E1 (or 3 E3) ports
Up to 1022 nxDS-0 channels (where n is 1 to 24) with no T3 configured
Up to 400 nxDS-0 channels (where n is 1 to 24) with one or more T3 configured
Is possible a combination of both: E1 and E3 concurrently?
Data Sheets reports combinations with T1 and T3, but does not include anything regarding E1 and E3.