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Group fax article

understanding fax transmissions and the will the facts are a little more sensitive than when it comes to people when people are talking on a phone system if there's any issues usually the less for a repeat and if there's something wrong they rarely result in a nasty message fax technology is a little more sensitive however when faxes are talking across if there's any blurbs or any problems that are happening that result in some type of transmission error this is compounded by the fact that they are working typically across the globe or across the nation the faxing protocol has been identified by ITU and is called t30 the best understand this we'll need to break you down into the different five phases of a fax you can see how they're identified with letters phase a phase B phase C phase D and then Phase II depends on what's going on you'll have different types of transmission messages and error messages and alerts depends on what part of the call were either successfully working at or breakdowns are at there is a lot of details to how this works so we'll do a high end overview but this is a technical breakdown and deep dive to this process some terminology that comes up that we'll need to understand is basically when it comes to fax bit rates or really just the speeds you'll see two terms that come up a lot in faxing v17 v34 b-17 refers to a maximum speed of 14 400 which is a pretty slow speed but that's as fast as a typical fax will go v34 refers to 33 600 which is a lot faster actually over double the first section every 17 is referred to as G 3 which is called group 3 faxing which is the standard for most fax machines that are in the world v 34 is referred to as super G 3 which is a different method altogether uses similar concepts of C 3 but some enhancements that help to go to faster speeds the first one we'll look at is phase a this is the call establishment this quite simply is whether the fax machine will identify itself as a fax machine so if you have a multifunction device that can answer phone calls and faxes and you were to call it with a fax machine and a human answers should it go into the fax process or not the calling fact machine uses a tone called C and G this is a called a comfort noise generation and it simply identifies to the other caller that you're in fact effects machine and not a person the fax machine that answers the call will make all the difference on what type of speeds that were using the CD tone kind of a flatline sounding pulse indicates that it's a g3 only system then it can go as fast as V 17 which is 14 400 only if...