326X Series Modem Troubleshooting Guide (Continued)

Problem

Diagnosis/Test

Possible Solution

CALL

 

 

TERMINATION

 

 

Modem takes too long to

Check to see if remote modem

If remote modem doesn't support PSTN cleardown, try to

disconnect

supports PSTN cleardown.

change the setting of DCD Loss Disconnect (AT*CD)

 

 

to a smaller number.

 

 

 

Modem doesn't

Check modem’s DTR option for

• Set DTR to an option other than High.

disconnect when DTR

correct setting.

• Set DTR=Discon (AT&D2).

drops, or

 

 

Modem doesn’t

 

 

disconnect when

 

 

communications

 

 

software package does

 

 

 

 

 

Communications

Check the delay between issuing

Ensure the escape sequence (+++) complies with the

software package won't

the escape sequence (+++) and

modem’s guard time requirements (refer to Line feed

signal the modem to

the ATH command.

character:S-Register 4 for details).

return to command state

 

 

when escape sequence

 

 

(+++) is issued

 

 

 

Check whether the modem is set

Set ACU Select=AT (ACU OPT's menu).

 

for AT ACU.

 

 

 

 

FILE TRANSFER

 

 

Can't transfer all of a

Check the modem’s flow control

Ensure that the DTE's flow control is the same as the

file or a file aborts in

settings.

modem’s setting (for example XON-XOFF, RTS/CTS).

the middle of transfer

 

 

 

Check whether your

If your communications software supports speed

 

communications package

conversion, set modem’s Speed Conver=On (AT*SC1).

 

supports speed conversion.

 

 

 

 

It takes longer than

Confirm which file transfer

Use different protocol, for example, YMODEM,

expected to transfer a

protocol you are using.

Y-GMODEM.

file

 

 

 

 

 

If operating the 326X-SDC modem in SDC mode, and you experience this type of problem...

BER tests do not work

BER tests do not work in SDC

 

 

mode because data is not framed.

 

 

 

 

Modem won’t pass data

Ensure your DTE protocol is

If your protocol is not HDLC/SDLC-like, use direct

 

HDLC/SDLC-like data.

mode.

 

Check for data format mismatch

Set data format option to match the DTE [NRZ

 

between modem and DTE

(AT*DF0) or NRZI (AT*DF1)].

 

(AT*DF).

 

 

Check clocking requirements.

Set modem for internal or external clock as required by

 

 

your application.

 

 

 

Troubleshooting

Troubleshooting Guide 6-7

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Telenetics V.34-SDC, 326X V.34, V.32bis Series manual Call Termination
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326X V.34, V.32bis Series, V.34-SDC specifications

Telenetics has been a key player in the field of telecommunications, offering advanced modem solutions that cater to diverse communication needs. Among their notable products are the V.34-SDC and V.32bis series, including the 326X V.34 modem. These modems have been designed to enhance data transmission reliability and speed in various applications.

The Telenetics V.34-SDC modem represents a significant leap in technology, supporting data rates of up to 28.8 Kbps. This modem utilizes the advanced V.34 modulation scheme, which optimizes the use of existing telephone lines to deliver impressive performance, especially for users requiring high-speed data transmission. The V.34-SDC model also features robust error correction and data compression techniques, ensuring that users receive accurate data even over less than ideal connections. With its extended line-conditioning capabilities, the V.34-SDC modem can efficiently handle long distances and poor line conditions.

Equally noteworthy is the V.32bis series, which provides backward compatibility with V.32 modems, enabling seamless integration into existing systems. Capable of speeds up to 14.4 Kbps, the V.32bis modems are ideal for businesses and environments where legacy systems remain in use. It features adaptive equalization and advanced echo cancellation, ensuring a clear signal is maintained throughout the data transmission process. This versatility allows users to connect with various devices across different infrastructures.

The 326X V.34 modem further exemplifies Telenetics' commitment to high performance. It combines the V.34 capabilities with enhanced security features, offering users encryption options for sensitive data. This is particularly crucial for businesses that need to safeguard their information against potential vulnerabilities during transmission. The 326X also supports various data communication protocols, making it adaptable for multiple platforms and applications.

In summary, Telenetics’ V.34-SDC, V.32bis series, and 326X V.34 modems stand out for their high-speed data transmission, compatibility, advanced error correction, and security features. These technologies make them excellent choices for both enterprise and networking applications where reliable communication is vital. Telenetics continues to innovate, delivering modem solutions that meet the evolving demands of the telecommunications landscape.
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