Specification

NIM-1T

NIM-2T

NIM-4T

Synchronous support

Yes

Yes

Yes

Synchronous maximum speed (per port)

8 Mbps

8 Mbps

8 Mbps

Serial protocols

EIA-232, EIA-449, EIA-530, EIA-530A, V.35, and X.21

EIA-232, EIA-449, EIA-530, EIA-530A, V.35, and X.21

EIA-232, EIA-449, EIA-530, EIA-530A, V.35, and X.21

Telecomm post, telephone, and telegraph (PTT)