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Dustin Stahlback
08/12/05 07:50
Read: 963 times
Twin Cities
USA


 
#99276 - calling tones control echo cancellers
Responding to: Brian E. Cauchi's previous message
Guard tones allow v22, v22bis to work on some of the European networks. For the most part, these tones are not needed anymore. I believe the gaurd tone was used as a billing mechanism. I believe the guard tone would be issued by the answering device until a connection was made, then billing would occur. Calling tones control echo cancellers.

List of 4 messages in thread
TopicAuthorDate
Embedded modems & guard tone...      Brian E. Cauchi      08/01/05 05:48      
   calling tones control echo cancellers      Dustin Stahlback      08/12/05 07:50      
   calling tones control echo cancellers      Dustin Stahlback      08/12/05 07:51      
   Ooops      Dustin Stahlback      08/12/05 08:22      

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