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ATAAB - National - German

de03r000.pdf "Sending level in quiescent state to avoid interference with the German Public Switched Telephone Network"

de04r000.pdf "Inter-working after receiving ringing signals having a long duration"

de05r000.pdf "Restriction on seizing the line without the intent of making a call"

de08r000.pdf "Lower limit of voltage in DC characteristics"

de09r000.pdf "Impedance during DTMF signalling"

de12r000.pdf "Improvement of Output signal balance for better DTMF signalling"

de14r000.pdf "Improvement for transition from loop to quiescent"

de17r000.pdf "Definition of a feeding bridge"

 

Last updated: 2007-03-19 14:38:37