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- Path: nntp1.best.com!usenet
- From: Rigor@clever.net (Matt Fox)
- Newsgroups: comp.dcom.modems
- Subject: New 03/27/96 Usr courier I-modem code...
- Date: 6 Apr 1996 08:16:13 GMT
- Organization: Best Internet Communications
- Message-ID: <4k598d$j0m@nntp1.best.com>
- NNTP-Posting-Host: belvdere.vip.best.com
- X-Newsreader: WinVN 0.99.7
-
- just found this on usr's bbs 708 982 5092 or ftp site ftp.usr.com
- directory dl05:
-
- new Imodem code.
-
- IE010104.ZIP 423930 04-05-96 External I-Modem Firmware Download Version
- 1.1.4 Dated: 03/27/96 || P/N:1.018.807
- IM010104.ZIP 423929 04-05-96 Internal I-Modem Firmware Download Version
- 1.1.4 Dated: 03/27/96 || P/N:1.018.808
-
-
- read me notes:
- ==============
-
- COURIER I-MODEM INTERNAL AND EXTERNAL - CODE ENHANCEMENT REV. 1.1.4
- 4/4/96
-
-
- Note that there are 2 separate files, one for the External models,
- one for the Internal models. Files beginning with "IE" are for the
- External. Files beginning with "IM" are for the Internal.
-
- -------------------------------------------------------------------
- Rev. 1.1.4 (Internal and External)
- *** RELEASE NOTES ***
-
- IMPORTANT NOTE!
-
- Many times new code will change the memory locations used by various
- registers. BE SURE TO GO INTO A TERMINAL PROGRAM AND ENTER THE FOLLOWING
- COMMAND!:
-
- AT&F1S67=0S68=0&W
-
- This will restore the factory default template, set S67 to 0, and write
- these changes to NVRAM. It will also enable the enhanced auto select features
- (S68). You may want to make a screen print of your current settings first
- (ATI4).
-
- CHANGES FOUND IN THIS RELEASE:
-
- The primary purpose of this release is to overcome problems with Telco
- network design and/or CO equipment limitations that prevented proper
- operation of the Universal Connect Feature. We also included several minor
- bug fixes/feature changes.
-
- AUTO SERVICE SELECT ENHANCEMENTS
-
- There were a couple issues we needed to tackle:
-
- One was when we placed a 64K digital call and the telco actually
- connected it to an analog destination. This broke our auto-fallback
- sequence as we saw this as a valid connect at 64K, and we could not
- know to fallback. We have fixed this by detecting the modem answer
- tones, and converting to analog modem mode on the fly. This happens
- within 50ms, so it will be totally transparent.
-
- The other was we were presented a voice network message ("We
- cannot complete your call as dialed" or similar), but no D
- channel reject message. We have put in a voice detect feature
- that will detect the voice message, disconnect and retry as
- analog.
-
- Because there may be times when this operation is not desired, we
- have put in S register bits to allow these features to be
- selectively disabled by the end user. Two bits in the S68 register
- (S68.0 and S68.1) can be used to enable or disable the above features.
-
- S68.0=0 enables the ability to change to analog mode during a digital call
- attempt (*V2=0 or *V2=5 modes only).
-
- S68.0=1 disables the ability to change to analog mode during a digital
- call attempt (*V2=0 or *V2=5 modes only). If an analog modem tone is
- detected the call will disconnect and not retry. The ATI6 screen will
- show "Disconnect Reason is Analog Destination Over a Digital Network
- Connection". You may want to disable this in cases where digital calls
- are charged differently than Speech Bearer calls.
-
- S68.1=0 enables the ability of the I-modem to detect voice (*V2=0 or
- *V2=5 modes only).
-
- S68.1=1 disables the ability of the I-modem to detect voice (*V2=0 or
- *V2=5 modes only).
-
- AS WE ASSUME MOST WILL PREFER TO LEAVE THESE FEATURES ENABLED, ATS68=0
- IS RECOMMENDED AND WILL SET BOTH BITS OFF (FEATURES ENABLED).
-
-
- OTHER ISSUES CHANGED IN 1.1.4:
-
- - Fix problems observed with Z-Modem transfers in certain situations.
-
- - Fix problems with DTE speed detection. This problem was observed
- primarily when used with Livingston Portmasters.
-
- - Changed *V2=5 mode to allow for incoming Analog bearer calls.
-
- - Fix rare problem where the I-modem got into a state where it could not
- place or receive calls on the data side.
-
- - Fix problem where it would reset the DTE rate to 57600 on hard reset
- regardless of the DTE rate set in NVRAM. It now sets DTE to the rate
- stored in NVRAM upon hard reset (power cycle or ATZ!).
-
-
-