International Telecommunication Union � ITU
Fran�ais� Espa�ol
�
Site map Contact us Print version
� Home : ITU-T : Publications : Recommendations : E�Series : E.180
Recently posted�-� Search Recommendations
� �
E.180�:�Technical characteristics of tones for the telephone service �

Recommendation E.180

This Recommendation is published with the double number E.180 and�Q.35
In force components
Number
 Title Status
E.180/Q.35 (03/98)
� 		Technical characteristics of tones for the telephone service �
This Recommendation is published with the double number E.180 and�Q.35 		In force
�
�
Superseded and Withdrawn components
Number
 Title Status
E.180/Q.35 (11/88)
� 		Technical characteristics of tones for the telephone service �
This Recommendation is also published under the alias number Q.35 		Superseded

�

Top�-� Feedback�-� Contact us�-� Copyright � ITU�2008�All Rights Reserved
Contact for this page :� ITU-T Publications
Updated :�2010/03/28		 �