Paradyne 3615, 3616 manual Before You Begin

COMSPHERE DualFlow Data Service Units

Before You Begin

The COMSPHERE 3000 Series Carrier should already be installed properly and be operational, with a functioning shared diagnostic control panel (SDCP). An SDCP (installed in the carrier) is required for installation and maintenance of the Model 3616 DSU. For installation information, see the COMSPHERE 3000 Series Carrier, Installation Manual.

A fan module may also be needed to dissipate heat. Refer to the Fan Module Installation section in Chapter 3 of the COMSPHERE 3000 Series Carrier, Installation Manual to determine whether a fan is required.

The distance between your DTE and the DSU must be within EIA-232-D/V.24 or V.35 limits.

•For the EIA-232 connector, the maximum recommended distance is 50 feet. If operating at 56 kbps the maximum distance is 34 feet for shielded cable, and 68 feet for unshielded cable. When a Switched 56 DBM is installed, ensure that the effective shunt capacitance of the circuit (measured at the DSU and including the capacitance of the cable and the DTE) does not exceed 1250 picofarads.

•For the V.35 connector, the recommended maximum distance between a DTE and DSU is nominally 1000 feet.

Contact the telephone company to coordinate your installation before connecting the DSU to the DDS, Switched 56 kbps, or dial network. The DSU can only operate at the data rate for which access to the DDS or dial network is provided. Refer to the notice at the front of this guide to ensure compliance with FCC, Bell Canada, and Canadian DOC rules.

How to Change

Hardware Straps

HANDLING PRECAUTIONS

FOR

STATIC-SENSITIVE DEVICES

This product is designed to protect sensitive components from damage due to electrostatic discharge (ESD) during normal operation. When performing installation procedures, however, take proper static control precautions to prevent damage to equipment. If you are not sure of the proper static control precautions, contact your nearest sales or service representative.

The Model 3616 DSU has several hardware straps that control the permissive or programmable connection when a DBM is installed, the Test Mode Indication leads, and the external interface leads (used with a ± 48 Vdc Central Office Power Unit).

Refer to Figure 3-1 to locate the switch and jumper locations. If a V.32 DBM is installed, refer to Table 3-1 to determine which switch needs to be changed, if any. Refer to Table 3-2 to determine whether these jumper straps need to be changed.

3-2 December 1996 3615-A2-GB20-20