nelson@sgi.com (Nelson Bolyard) (08/03/90)
In <11087@odin.corp.sgi.com> I wrote: >It is possible to defeat call waiting for the duration of an incoming call. >The following method works well, and was explained to me by a representative >of Pacific Bell. To use this method, one must have the 3-way calling >feature in addition to call waiting. > 1. Answer the phone. Tell caller to wait for a few seconds. > > 2. Flash the switch-hook and get a second dial-tone (this is the > step that doesn't work unless you have 3 way calling). > > 3. Dial *70 (or whatever the call waiting defeat sequence is in > your area) and wait for the confirmation tone (3 quick beeps of > dial-tone sound). > After step 3, you are immediately reconnected with the incoming call, and you will receive no call-waiting interruptions for the remainder of the call. Flashing again after step 3, which I originally suggested, is wrong. I then explained that I wanted my modem to do this for incoming calls, but had been unable to get it to do so. >If you know of some magic incantation which will enable my modem to >cooperate and dial during the call, I'd very much appreciate it! > >Please reply via email to an address below, and I'll summarize if anything >works! I received two replies which contained very helpful suggestions. After some experimentation with those ideas, I am now able to succesfully defeat call waiting on all incoming calls. Here are the details for your enjoyment: 1. Disable auto-answer S0=0. 2. When the modem says "RING" send it the following string: ATX3DT,!,*70,R According to my T2500 reference manual, this means as follows: AT get modem's attention X3 don't wait for dial tone before proceeding to dial. D Dial T using Tones , wait two seconds ! flash the switch-hook , wait two seconds *70 defeat call waiting , wait two seconds R go into answer mode This also works with S8 (pause time for comma) set down to 1, but then two commas are needed after the *70. I wish to thank the two individuals who contributed to my success. They are: >----------------------------------------------------------------------------- >Toby Nixon, Principal Engineer Fax: +1-404-441-1213 Telex: 6502670805 >Hayes Microcomputer Products Inc. Voice: +1-404-449-8791 CIS: 70271,404 >Norcross, Georgia, USA BBS: +1-404-446-6336 MCI: TNIXON > Telemail: T.NIXON/HAYES AT&T: !tnixon >UUCP: ...!uunet!hayes!tnixon Internet: hayes!tnixon@uunet.uu.net >MHS: C=US / AD=ATTMAIL / PN=TOBY_L_NIXON / DD=TNIXON >----------------------------------------------------------------------------- who suggested using comma instead of W, setting S8 down, and doing the *70 BEFORE the modem got the carriers established; and: >Matthias Urlichs -- urlichs@smurf.sub.org -- urlichs@smurf.ira.uka.de >Humboldtstrasse 7 - 7500 Karlsruhe 1 - FRG -- +49+721+621127(Voice)/621227(PEP) who suggested using R to go into answer mode instead of ;A . I hope this information is useful to many of you who must use dial-back modems, as I must. ------------------------------------------------------------------------------- Nelson Bolyard MTS Secure IRIX Silicon Graphics, Inc. nelson@sgi.COM {decwrl,sun}!sgi!whizzer!nelson 415-335-1919 Disclaimer: Views expressed herein do not represent the views of my employer. -------------------------------------------------------------------------------