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TA 544 User Manual/61200704L1-1A
Page 13 of 68
© 2001, ADTRAN, Inc. TA 544 User Manual
1. TA 544 OVERVIEW
The Total Access 544 is a complete solution Integrated Access Device (IAD) for Voice over ATM (VoATM) appli-
cations. The unit includes a modular network interface, Nx64 V.35 interface, 10/100BaseT interface, ISDN ports, and
an optional battery back-up (1200641L1) for added security. The TA 544 can provision, test, and provide status for
any of the voice and data interfaces. All connections are made via the rear panel (see Figure 1). In addition to a built-
in IP router, the TA 544 contains an Echo Canceller necessary for VoATM applications.
Appendix A, on page 49, contains detailed specifications for the TA 544.
Figure 1. TA 544 Rear Panel
Firmware Updates
Firmware can be updated by using XMODEM transfer protocol via the unit’s
CRAFT
port (see Figure 1) or by using
TFTP from a network server. (See Appendix B on page 51 and Appendix C on page 54.)
Terminal Menu
The terminal menu is the access point to all other operations. Each terminal menu item has several functions and sub-
menus that identify and provide access to specific operations and parameters. These menu selections are described later
in this User Manual.
2. VOICE OVER DSL OVERVIEW
Voice over DSL (VoDSL) refers to providing toll quality voice access to the Public Switched Telephone Network
(PSTN) over twisted copper pair using DSL. Data can be combined with multiple voice lines over a single medium via
DSL, thus yielding many advantages over traditional TDM technologies.
Traditional TDM technologies are limited by statically allocating bandwidth. DSL overcomes this by providing a large
bandwidth and utilizing other technologies, such as ATM, to dynamically assign bandwidth as it is needed. Because
of this, the user is able to add voice and data connections over a DSL line with flexibility and ease.
3. VOICE OVER ATM OVERVIEW
Voice over ATM is the technology used to transmit voice conversations over a data network using Asynchronous
Transfer Mode (ATM). There are several potential benefits to moving voice over a data network using ATM. First, the
See Appendix D on page 57 for instructions about navigating the terminal menus.
ISDN