Chapter 2 - Hardware Installation

P1

P2

Data Protocol

Lights in combination with P2 and 128 LEDs to indicate which data protocol

(V.110 [build MTA128ST-USB only] , V.120, X.75, PPP, MLPPP) is in use as shown in the table below.

Data Protocol

Lights in combination with P1 and 128 LEDs to indicate which data protocol

(V.110*, V.120, X.75, PPP, MLPPP) is in use as shown

below:

Data Protocol

128 LED P1 LED

P2 LED

V.110

V.120

X.75

PPP (1 channel)

MLPPP (2 channels)

OFF ON

*The MTA128ST-USB is manufactured in two builds. To determine the build of your terminal adapter (TA), issue the ATI2 command in a terminal window. If the TA responds to the command with MTA128ST- USB, then it supports V.110. If your TA resonds to the ATI2 command with MTA128ST-USB-RC, V.110 support is not available.

References

The World Wide Web is an excellent source of information about terminal adapters, terminal adapter installation, configuration, and troubleshooting. The following Web sites are good places to start:

Costmo’s Other Resources Page: http://modems.rosenet.net/or/

Data Communications FAQ: http://www.best.com/~malch/comfaq.html

Multi-Tech Systems, Inc.: http://www.multitech.com/

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AC International MTA128ST-USB manual References, Hardware Installation Data Protocol