From: "echicken"    
      
     Re: Re: Dial Up Gateway   
     By: niter3 to Netsurge on Wed Nov 24 2010 15:56:00   
      
    > I was speaking about this with another guy which told me these features work   
    > if you get the fax line package. I'm assuming if this is true, it would be   
    > some form of codec? Maybe this is how you properly get dial up working over   
    > voip to voip?   
      
   There are configurations & codecs that are well suited to fax use, but whether   
   or not a provider charges extra for their use would vary from one to the other.   
   Mine doesn't charge any extra; in fact their fax packge is a fax to email   
   service, quite far from what I'd want for this.   
      
   VoIP to VoIP modem calls are especially sketchy (although I have had some   
   success with them) just because both ends are lagging and the audio is to some   
   extent mangled.  At least with VoIP to POTS calls one end of the "conversation"   
   is on a stable line.  In time I'm sure that VoIP quality will improve enough to   
   make this a non issue; some of the blame may also be on lag induced by slow   
   broadband connections (I know my DSL could be better.)   
      
   Actually this makes me think that at present, something half-duplex akin to   
   packet radio might be better suited to VoIP.  I'm (slowly) working on a packet   
   radio interface to my BBS; maybe I'll see about making that work for dialup as   
   well.   
      
   echicken   
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