ADTRAN 810 Plus manual T1 Bandwidth Manager, WAN Overbooking

Chapter 1. Introduction

T1 Bandwidth Manager

As a T1 Bandwidth Manager, ATLAS 810PLUS combines the functions of a T1 CSU/DSU, an intelligent channel bank, a T1 Multiplexer, and DACS into a single platform. The Bandwidth Manager supports a wide range of data ap- plications including T1 “drop and insert,” channel grooming, and wide area data transport. ATLAS is ideal for point-to-point configurations or access to public networks. For optimization of existing equipment and network re- sources, ATLAS can be paired with ADTRAN’s TSU product offerings to support a variety of data and analog voice applications (see Figure 1-4).

Remote	Remote
Locations	Locations

System Controller		Quad T1/PRI
	ATLAS Bussing System
Quad T1/PRI	Quad Nx 56/64		Quad Nx 56/64
DSX-1		V.35	V.35

ATLAS 810PLUS

Figure 1-4. T1 Bandwidth Management

ISDN Access Switch

The ATLAS 810PLUS includes an advanced access architecture for switching dialup calls to specific ports or DS0s. As an access switch functioning in a user-to-user network and user-to-user mode, ATLAS consolidates multiple basic rate ISDN (BRI) connections onto T1/PRI access lines. Additionally, BRI-to-BRI, BRI-to-PRI, and PRI-to-PRI switching are supported. ATLAS also converts between ISDN D channel (PRI or BRI) and T1 Robbed Bit Sig- naling, allowing a non-ISDN PBX to access a more efficient ISDN facility. For network optimization, when bandwidth is not being used for switched ap- plications such as video conferencing, switched connection mapping dy- namically allocates bandwidth to the PBX for voice traffic. Call Filtering allows you to program the call types that will be answered and/or originat- ed on a per-user basis.

WAN Overbooking

The WAN Overbooking feature of ATLAS 810PLUS allows you to oversub- scribe switched bandwidth for situations where simultaneous access to the network by every subscriber is not required. WAN Overbooking reduces telecommunications expenses while still giving your subscriber base the connectivity they require. Local subscriber-to-subscriber connections are made without accessing the network at all, resulting in even more efficient use of wide area bandwidth (see Figure 1-5 on page 1-6).

61200266L1-1 ATLAS 810PLUS User Manual 1-5