International Telecommunication Union � ITU
Fran�ais� Espa�ol
�
Site map Contact us Print version
� Home : ITU-T : Publications : Recommendations : E�Series : E.721 : E.721 (08/91)
Recently posted�-� Search Recommendations
� �
E.721�:�Network grade of service parameters and target values for circuit-switched services in the evolving ISDN �

Recommendation E.721 (08/91)

Approved in 1991-08-23

Status : Superseded

Access : Freely available items

Available languages and formats :
�
Click on the Item

Click on the selected format
and language to get the document

� �
Format Size Posted Article Number
English

PDF Document PDF (acrobat)

57049 bytes N/A E�2337�
Espa�ol

PDF Document PDF (acrobat)

68094 bytes N/A S�2359�
Fran�ais

PDF Document PDF (acrobat)

69580 bytes N/A F�2315�

�

Top�-� Feedback�-� Contact us�-� Copyright � ITU�2008�All Rights Reserved
Contact for this page :� ITU-T Publications
Updated :�2001/09/10		 �