ADTRAN ISU 2X64 user manual Autobaud, Transmit Clock Menu Tree

Chapter 6. Configuration

This signal is echoed by the ISU 2x64 to the transmit clock signal on the DTE connector. See Figure 6-20 for the menu tree.

1=Netw. options

3=CONFIG 2=DTE options

3=Protocol

4=Quick setup

5=Security

6=Remote Config

1=Asynchronous

2=Synchronous

1=Bit Rate

2=Connector Type

3=RTS Options 4=CTS Options 5=CD Options 6=DTR Options 7=DSR Options

8=Transmit Clock

1=Normal

2=External

Figure 6-20

Autobaud

Transmit Clock Menu Tree

The ISU 2x64 has a DTE rate adjustment feature (autobaud) which automatically adjusts the bit rate on the DTE port connec- tor to match that of the connected terminal. For any terminal rate from 300 bps through 115.2 kbps, type AT and a carriage return. The ISU 2x64 will adjust to that rate. The DTE port must be set for AT commands under Dial Options for autobaud to become acti- vated on a port .

The autobaud feature is only allowed to be active on one DTE port at a time. If both DTE#1 and DTE#2 are set for AT com- mands (under Dial Options), then autobaud will be active on DTE#2 only. To make autobaud active on DTE#1, change the Dial Options on DTE#2 from AT commands to some other available dialing option.

When autobaud is not active on a DTE port, the asynchronous rate of the DTE port matches the rate programmed into the ISU 2x64 at the current time. While autobaud is running on a port, that port meets Microsoft Windows® 95 Plug-and-Play specifica- tions. The file MDMADTN.INF is required. To obtain this file, contact ADTRAN Technical Support as shown on the inside back cover of this manual.

54 ISU 2x64 Dual Port ISDN Service Unit User Manual 61200051L1-1D