Paradyne 3616, 3615 manual About Your DualFlow DSU, Overview, Standard Features

About Your DualFlow DSU 1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

DBM Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

V.32 DBMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Switched 56 DBMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Equipment Warranty and Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Overview

The COMSPHEREr DualFlow data service unit (DSU) provides simultaneous digital data service (DDS) and backup connections to support Frame Relay and router-based applications.

The DDS portion provides basic non-rate adapted, non-diagnostic access using the DSU's V.35 connector. The backup portion (either a V.32, 4-wire Switched 56, or 2-wire Switched 56 DBM) provides simultaneous rate-adapted, diagnostic access to the switched network.

Two versions are available:

•The standalone Model DualFlow 3615 DSU is designed for desktop or shelf operation.

•The carrier-mounted (nest- or rack-mounted) Model DualFlow 3616 DSU is designed for operation in the COMSPHERE 3000 Series Carrier.

Each DualFlow DSU is equipped with an integral dial backup module (DBM) for operation over the Public Switched Telephone Network (PSTN), often referred to as the dial network, or the Switched 56 kbps digital service.

The following sections describe the DSU's standard features, as well as the features of the integral DBMs. Refer to the appropriate section for DBM feature information.

Technical specifications of the DSU and various DBMs are near the end of this chapter.

Standard Features

The DualFlow DSU offers the following features:

•Multispeed operation. The DSU operates at data rates of 2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64CC kbps full-duplex over the DDS network.

•Two DTE connectors (interfaces) are provided: EIA-232-Dand V.35. Use the EIA-232-D connector for router-management data or backup; use the V.35 connector for user data.

•LADS operation. The DSU can operate as a local area data set (LADS) (sometimes called a limited-distance modem, or LDM) at 2.4, 4.8, 9.6, 19.2, 38.4, 56, or 64 kbps.

•NMS control. The DSU can be controlled by COMSPHEREr 6700 or 6800 Series NMS. Both NMSs operate using Advanced Diagnostic protocol (ADp).

The Model 3615 DSU requires a hubbing device for connection to the NMS; the Model 3616 DSU is connected to the NMS through the shared diagnostic unit (SDU) in the COMSPHEREr 3000 Series Carrier.

3615-A2-GB20-20 December 1996 1-1