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- Path: sparky!uunet!ivgate!mtask!MsgPost.v1.00
- From: MsgPost.v1.00@mtask.omahug.org (MsgPost v1.00)
- Newsgroups: comp.sys.amiga.hardware
- Subject: [2 of 2] Information from Supra on new ROMS
- Message-ID: <35.2aa5f0c3@ivgate>
- Date: 02 Sep 92 07:59:24 CST
- Reply-To: msgpost.v1.00@mtask.omahug.org
- Organization: Multitasking Systems, Kansas City
- Sender: news@ivgate.omahug.org (UUscan 1.10)
- Followup-To: comp.sys.amiga.hardware
- Lines: 157
-
-
- AT +FCLASS=0
- AT +FAA=1 (if using class 2) or +FAE=1 (if using class 1)
- AT S0=(1-255) or ATA
-
- Result Codes: CONNECT XX if data call
- FAX if fax call
-
- NOTE: This sequence must be sent before every answer
-
- Implements ECM (Error Correction Mode)
- Allows the fax software to resend a block of information if it is not
- received
- correctly by the other modem. This feature MUST be supported by the fax
- software in order to be used.
-
- Implements BFT mode (Binary File Transfer)
- Allows the user to send a file to another fax modem as if it were a
- fax instead of a file. This feature MUST be supported by the fax
- software in order to be used. This allows the user to use the fax
- software to send the file instead of using a terminal program.
-
- Fixes problem with DCD line turning off if modem configured with &C
- If the modem was configured with the &C, especially during a
- disconnect, the modem would toggle DCD line. This problem only
- affected a small percentage of users, generally those running BBSes
- on the Apple II.
-
- &Dx and &Cx settings are respected when in fax mode
- The CCITT TR29.2 committee has not defined how the modem should
- react to the &D and &C settings when in class 2 fax mode. While the
- committee has not defined this, there is a strong sentiment for
- respecting the &D and &C settings as it is handled in class 1 and
- when the modem is in data mode. This also allows the modems to work
- better under fax mode in the Unix enviorment.
-
- Fixes problem connecting with some fax machines
- The 1.2C roms had a few problems making connections to some fax
- machines. The fax machine used a slightly different tone when
- answering. This resulted in the two machines toning back and forth,
- not making a connection and then eventually hang up. This problem
- only happened to a small percentage of users.
-
-
- Added S-Register S109
- Controls speeds available for V.32bis carrier handshake, or the
- carrier rate to negotiate error correction, if S-Register S110=3.
-
- Decimal Value Explanation
- 1 reserved
- 2 4800 bps
- 4 7200 bps
- 8 9600 bps
- 16 12000 bps
- 32 14400 bps
- 64 reserved
- 128 reserved
-
- Added S-Register S110=3
-
- V.32bis standard negotiates carrier speed at 4800 baud then jumps to
- the agreed carrier speed to negotiate error correction/data
- compression. On noisy lines this can cause various connection
- problems. Supra's solution is to set S-Register S110 to 3. This
- causes the modems to connect at the slowest possible V.32 or V.32bis
- speed. Once this is done, as long as the line is clean enough, the
- modems will up-shift to the next possible carrier rate.
-
- The slowest possible carrier speed can be limited by the use of
- S-register S109.
-
- NOTE: Some modems can only up-shift a few times and then they will lose the
- connection (especially Supra V.32 and V.32bis with ROMs < 1.2C).
- The solution is to change S-Register S109 so that it does not need
- to up-shift as many times.
-
- NOTE: This only works when the modem is originating the call.
-
- Implements Silent Answer (allows voice/fax determination)
- When the phone rings, the modem will start monitoring the telephone
- line after the 2nd ring. If it detects a fax tone, it will do one
- of two things:
-
- 1. If S-Register S0 - 0, the modem will immediately answer the
- phone and attempt a fax connection.
-
- 2. If S-Register S0 = 0, the modem will quickly issue up to 9
- RINGS messages, expecting the fax software to issue an ATA.
-
- This eliminates the need for a $150 voice/fax black box.
-
- NOTE: DO NOT plug the answering machine into the telephone jack on the back
-
- of the modem. The modem should be plugged into the answering
- machine.
- This also also works if a telephone is in the circuit before the
- faxmodem.
-
- NOTE: This mode must be supported by the fax software.
-
- Implements Caller ID
-
- This is a feature is only available in some areas of the country.
- In between the 1st and the 2nd ring, the phone company will send
- information on who is calling you. If you ere in terminal mode and
- had told the modem to answer on the 3rd ring, you would see:
-
- RING
-
- DATE = 0321
- TIME = 1405
- NMBR = 5039672400
- NAME = SUPRA CORPORATION
-
- RING
-
- CONNECT 19200
-
- To enable CALLER ID:
-
- AT#CID=1 Enables Caller ID in formatted format
- AT#CID=2 Enables Caller ID in unformatted format
- (ASCII printable hex numbers)
- AT#CID=0 Disables Caller ID
-
-
- In addition to the enhancements and corrections noted above, Supra's new 1.2G
- ROM release also includes modifications that were implemented in the previous
- 1.2C ROM release. They are as follows:
-
- %G0 disables Rate Renegotiation on V.32bis
-
- %G1 enables Rate Renegotiation on V.32bis
- enables Rate Renegotiation and Retrain on V.32
-
- %E has not changed, but if both %G1 and %E1 are set, then the modem will
- Rate Renegotiate during a Retrain. This is also the only way the
- V.32
- modem can Rate Renegotiate.
-
- AT&F1 and AT&F2 defaults now include %G1
-
- S-Register S110:
-
- 0 causes connect at V.32 only
- 1 enable V.32bis on V.32bis modems
- 2 enable V.32bis and automatic rate renegotiation.
-
-
- Fixed several problems on the fax side of the modem
-
- .............................................................................
- tredysvr!cellar!swinokur -or- swinokur@cellar.uucp -or-
- GEnie: S.WINOKUR -or-
- 435 Norristown Road, Horsham PA, 19044
- ..................... Amiga: Hey, at least it works! ........................
-
-