Multi-Tech ISIHI-2S Specifikace stáhnout pdf (Strana 114)

114 MultiModemISI Hybrid Series, ISIHI-2S/2U

Chapter 6—Troubleshooting Guide

 If the modem/TA reports BUSY, the other number may be busy. Try again later.

 If the TA reports NO CARRIER, no connection was made. You may have dialed the

correct number, but the other computer or software was turned off or faulty. Check the

number and try again or try calling another system to make sure your TA is working.

Also, check that you accurately configured the TA with the correct switch type, TEIs,

data protocols, and other parameters needed for a successful call (see Chapter 3).

You can place data calls but not voice calls, or vice versa

 You might not have ordered both voice and data service from your ISDN provider.

Check your contract or latest statement of service from your ISDN provider.

 Your ISDN provider may have programmed the switch incorrectly. Call the provider.

You cannot place two simultaneous data calls

 You may not have ordered an ISDN line configuration that supports two simultaneous

calls. Check your contract or latest statement of service from your ISDN provider. Also,

your ISDN provider may have programmed the switch incorrectly. Call the provider.

 You may have misconfigured your TA to dial two simultaneous data calls. The

command AT&J1&W0<cr> is used to indicate whether outgoing calls should be made

on two B-channels by default.

 You may be using the wrong bundling dial modifier (e.g.,

ATD7853500&7853502<cr>). The ampersand in this command string is correct. Note

other valid characters joining two telephone numbers include a Plus Sign (+) and an

exclamation Mark (!).

Note: In Windows 95, if the Use Country Code and Area Code box is checked in the

Properties window for dial-up connection, the bundling modifier (i.e., &, + or !) is

removed from the dialing string when the user attempts to make a connection. The

solution is to not check the Use Country Code and Area Code box or to simply add the

bundling dial modifier to the phone number at the time of connection.

The terminal adapter disconnects while online

 Check for loose connections between the computer, the ISDN jack, and AC power.

 The problem may have originated at the other end of the line. Try again.

 If you were online with a BBS or online service, it may have hung up due to lack of

activity on your part or because you exceeded your time limit for the day. Try again.

The terminal adapter cannot connect when answering

 Autoanswer may be disabled. Turn on autoanswer in your data communications

program, or send the command ATS0=1 to your TA in terminal mode.

Note: If you want to accept calls while DTR is low, the TA must be configured to ignore

DTR. This is accomplished by entering AT&D0<cr>. With this configuration, the TA is

able to accept calls while DTR is low. If this configuration setting is not made, the TA

rejects incoming calls until DTR is high while the calls comes in.

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Multi-Tech ISIHI-2S Specifikace Strana 114