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5–1
Chapter 5. CONNECTOR
PINOUTS
5.1 Connector Overview
The rear panel connectors (Figure 5-1) provide all necessary external connections
between the modem and other equipment.
Figure 5-1. Rear Panel
Table 5-1. External Connections
Name Ref Connector Type Function
RX IF J1 BNC RF Input
TX IF J2 BNC RF Output
Aux Serial P6 USB Type B (female) Auxiliary Serial
Overhead P3A 25-pin D (male) Overhead Data
Data Interface P3B 25-pin D (female) Data Input/Output
External Reference J9 BNC Input
Audio P4A 9-pin D (female) Audio Signal Input/Output
Remote Control P4B 9-pin D (male) Remote Interface
IDR Alarm P5A 15-pin D (female) Alarm
Alarms P5B 15-pin D (male) FORM C Alarms
Balanced G.703 P7 15-pin D (female) Balanced G.703 Data
IDI J10A BNC Insert Data In/Sub-rate Auxiliary Tx G.703 In
DDO J11A BNC Drop Data Output/ Sub-rate Auxiliary Rx G.703 Out
RX Unbalanced J10B BNC Receive G.703 (IDO)
TX Unbalanced J11B BNC Transmit G.703 (DDI)
External Frequency Reference J12 SMA High-Stability External Reference (Optional)
Note: To maintain compliance with the European EMC Directive (EN55022, EN50082-1) properly shielded cables are
required for all data I/O.