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Q.553 : Transmission characteristics at 4-wire analogue interfaces of digital exchanges

Recommendation Q.553

In force components
Number
Title Status
Q.553 (11/01)
 
Transmission characteristics at 4-wire analogue interfaces of digital exchanges   In force
 
 
Superseded and Withdrawn components
Number
Title Status
Q.553 (11/88)
 
Transmission characteristics at 4-wire analogue interfaces of a digital exchange  
Replaces Q.507 (1984) and Q.517 (1984)
Superseded
Q.553 (01/94)
 
Transmission characteristics at 4-wire analogue interfaces of digital exchanges   Superseded
Q.553 (11/96)
 
Transmission characteristics at 4-wire analogue interfaces of digital exchanges   Superseded

 

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