chris@yarra.oz.au (Chris Jankowski) (09/13/89)
My TrailBlazer manual lists the following options to select guard tones apparently used by V22 and V22bis modems during call establishment: S91=0 - no guard tone S91=1 - use 1800 Hz guard tone S91=2 - use 550 Hz guard tone Questions: -What are the guard tones for? -Why you have three options here and are they mutually exclusive? -Is there any indication what modem may use which option - by country of manufacturing perhaps? -m------- Chris Jankowski - Senior Systems Engineer chris@yarra.oz{.au} ---mmm----- Pyramid Technology Australia fax +61 3 820 0536 -----mmmmm--- 11th Floor, 14 Queens Road tel. +61 3 820 0711 -------mmmmmmm- Melbourne, Victoria, 3004 AUSTRALIA (03) 820 0711 "Knowing how things work is the basis for appreciation, and is thus a source of civilized delight." -- William Safire