Average Holding Time of Digital Telephone Switching Systems

The following reference information is provided for the design of the switching system:

5.28.1 Dialed Calls

a) Local calls ………………….. 150 seconds
b) Calls to special services ……… 80 seconds
c) DDD calls (national) ……….. 100 seconds
d) IDDD calls (international) …. 120 seconds

5.28.2 Manual Calls

a) National via operator ………. 180 seconds

b) International via operator …… 380 seconds


 

Other Info

Document Category Engineering
Document Target Users

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