Chapter 2. Installation

DSX-1 Port

The DSX-1interface provides a short haul T1 connection to a PBX or other customer premise equipment (CPE). This port complies with ANSI T1.102.

Control Port

The TSU IQ+ has an 8-pin modular jack labeled CONTROL. The Control port provides connection to a VT-100 EIA-232 compatible interface, a device running SLIP protocol, or a device running Async PPP protocol. An 8-foot cable with adapter connector provides a standard DB-25 EIA-232 interface. See Pinouts on page A-1 for the Control port’s pin assignments. Chapter 3, Operation describes this port’s operation.

V.35 Connector

The DTE should be connected to the V.35 connector (labeled V.35 Nx56/64). The maximum cable length is 100 feet. The pin assignments for this connector are listed in Pinouts on page A-1.

To prevent possible radio frequency interference emissions, a shielded ca- ble is required.

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TSU IQ+ User Manual

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ADTRAN 1204002L2, TSU IQ+ user manual DSX-1 Port, Control Port, Connector