X-NEWS: eisner comp.dcom.modems: 239 Relay-Version: VMS News - V6.0-3 14/03/90 VAX/VMS V5.5; site eisner.decus.org Path: eisner.decus.org!noc.near.net!news.centerline.com!uunet!nntp.telebit.com!modems Newsgroups: comp.dcom.modems,biz.comp.telebit Subject: Telebit Technical Service Advisory Message-ID: From: modems@telebit.com (Telebit Support acct) Date: Wed, 31 Mar 1993 20:31:24 GMT Sender: news@telebit.com Distribution: na Organization: Telebit Corporation; Sunnyvale, CA, USA Originator: modems@navajo Nntp-Posting-Host: navajo Lines: 132 ------------------------------------------------------------------------- Telebit Corporation ** TECHNICAL SERVICE ADVISORY ** March 17, 1993 ------------------------------------------------------------------------- MOD.1.393 Telebit Corporation, in keeping with its policy of providing the highest- quality data communications products, is providing this document which contains information on specific versions of firmware for the WorldBlazer and T3000 family of modems. Telebit is confident that all problems listed in this document are fixed in version LA7.02. If you are having any problems specific to one of the versions of firmware mentioned below, please upgrade the modem(s) to firmware version LA7.02. Any modem problems not listed here should be reported directly to Telebit Technical Support at (800)835-3248 or (408)734-5200. To find out the current version of firmware in your modem: 1) Connect your modem to a terminal or a computer running a terminal emulation program. 2) Type ATI3. Then press Enter. 3) Modem responds with current version. Example: ATI3 WorldBlazer - SA - Version LA7.02 OK Upgrading firmware involves the following: 1) Printing out current configurations. 2) Disconnecting the modem from any DTE devices and opening up the case with a small Phillips head screwdriver. 3) Replacing the current firmware with version LA7.02. 4) Powering on the modem, allowing it to run through diagnostic tests. (about 30-40 seconds) 5) Reconnecting the modem to the DTE equipment and reprogramming nonvolatile memory from the original printout. Below is a list of known problems that pertain to specific versions of firmware. Make sure a problem exists in YOUR version before requesting an upgrade. * Known Problems * --> LA7.01 1 - When used in an unattended answering environment, the WorldBlazer or T3000 will randomly fail to answer a call. Power cycling the modem solves the problem. --> LA5.01 has problem #1 in addition to the following: 2 - During a V.32bis (14,400 bps) connection, a small amount of line noise may be detected, causing the modems to fall back within the modulation to a lower rate (such as 12,000 bps). If the line conditions are improved, a V.32bis modem may request that the modulation rate be increased to the previous higher rate. The WorldBlazer and T3000 will not respond to this fall-forward request. 3 - After detecting an unacceptable amount of line noise on a V.32bis (14,400 bps) connection, the CD light begins flashing, signaling a retrain. The modem does not reestablish the connection. After the failed connection, the WorldBlazer or T3000 may begin to send the OK result code back to the DTE at approximately 10-second intervals. This problem can be solved if the user forces a V.32 (9600 bps) connection. Setting S50=6 forces the connection speed to V.32. 4 - All modem lights from MR to CTS are on and/or the user cannot get any response from the modem after the remote modem has disconnected the call. Power cycling the modem solves the problem. --> LA5.00W has problems 1 through 4 in addition to the following: 5 - When *answering* a call with the modem connected to a UNIX system configured for UNIX UUCP-G protocol and a window size greater than 3, the protocol startup will fail. On many UNIX systems, a -x9 debug dump of the session from the remote (originating) modem will report: "UUCP Startup Failed" 6 - When *originating* a call, the WorldBlazer does not connect in PEP mode to older TrailBlazer Plus modems with firmware version BA4.00. The table below summarizes the above information. * Firmware * * Release * * Known * * Version * * Date * * Problems * --> LA7.02 --> 1/93 --> None --> LA7.01 --> 12/92 --> 1 --> LA5.01 --> 8/92 --> Has problem 1 in addition to problems 2, 3 and 4. --> LA5.00W --> 5/92 --> Has problems 1 through 4 in addition to problems 5 and 6. After carefully examining this document, if you determine that your modem is experiencing a firmware-related problem, you may request a FREE LA7.02 upgrade from Telebit Technical Support. Please call Technical Support at (800)835-3248 or (408)734-5200. Follow the PhoneMail system prompts to Modem Technical Support. Note: Please *call* Telebit Technical Support at the above number if you have any questions regarding this document. ============================================================================== / / / |///////|/ / Telebit Technical Support |///////|/ Telebit Corporation |///////| 1315 Chesapeake Terrace |///////| Sunnyvale, CA 94089 T E L E B I T 1-800-TELEBIT (1-800-835-3248) Direct Dial: (408) 734-5200 UUCP: {sun,pyramid,uunet,ames}!telebit!modems FAX: (408) 734-3333 INTERNET: modems@telebit.com COMPUSERVE: "Go Telebit" TELEBIT: The modem of choice for the UNIX world. ==============================================================================