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61200375L1-1
TA 850
T1 RCU VoATM UIG/61200376L2-31A
Page 53 of 72
© 2001, ADTRAN, Inc. TA 850 User Manual
Appendix A. Updating TA 850 Firmware using XMODEM
The TA 850 supports firmware updating using XMODEM transfer protocol via the base unit’s
CRAFT
port. XMO-
DEM is found in the VT 100 terminal emulation application in the ADTRAN Utilities package and in most PC VT
100 communications software packages.
Before beginning this procedure, you must obtain the appropriate update file from ADTRANTechnical Support at
(888) 4ADTRAN (423-8726).
An XMODEM download can be initiated by enabling the appropriate dip switch or by using the console menus. The
following materials are required.
• VT 100 terminal or PC with VT 100 terminal emulation software
• XMODEM software
Updating Firmware via the Dip Switch
1. Using a VT 100 terminal emulation communication software package which contains XMO-
DEM protocol support, log in toTA 850. Set the transmit rate of the emulation software to
9600 baud.
Make certain that the communications software package being used has flow control turned off.
To prevent electrical shock, do not install equipment in a wet location or during a lightning
storm.
Electronic modules can be damaged by static electrical discharge. Before handling modules, wear
an antistatic discharge wrist strap to prevent damage to electronic components. Place modules in
antistatic packing material when transporting or storing. When working on modules, always place
them on an approved antistatic mat that is electrically grounded.
Perform the Steps Below in the Order Listed