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Q.921 : ISDN user-network interface - Data link layer specification

Recommendation Q.921

This Recommendation is also included but not published in I series under alias number I.441.

In force components
Number
Title Status
Q.921 (09/97)
 
ISDN user-network interface - Data link layer specification  
This Recommendation is published with the double number Q.921 and I.441
In force
Q.921 (1997) Amendment 1 (06/00)
 
  In force
 
 
Superseded and Withdrawn components
Number
Title Status
Q.921/I.441 (11/88)
 
ISDN user-network interface - Data link layer specification  
This Recommendation is also included but not published in I series under alias number I.441
Superseded
Q.921 (03/93)
 
ISDN user-network interface - Data link layer specification  
Superseded

 

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Updated : 2010/07/14