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Introduction
MultiModemISI Hybrid Series, ISIHP-2S/2U/4S/4U/4SD 7
From the perspective of the server PC, the ISIHP-2S/2U is an eight-
port serial card with eight devices permanently attached to the serial
ports (Figure 1-1). The first four ports are the two terminal adapters,
each of which appear as two ports. The remaining four ports are the
four central site modems. The following chart summarizes the
correlation of ports and devices.
2S/2U Port # Device ISDN Line Number
1TA 1
2TA 1
3TA 2
4TA 2
5 Modem 1
6 Modem 1
7 Modem 2
8 Modem 2
From the perspective of the server PC, the ISIHP-4S/4U is an sixteen-
port serial card with sixteen devices permanently attached to the serial
ports (Figure 1-2). The first eight ports are the four terminal adapters,
each of which appear as two ports. The remaining eight ports are the
eight central site modems. The following chart summarizes the
correlation of ports and devices. The ISIHP-4SD contains terminal
adapters only; no modems are present.