INTERNATIONAL  TELECOMMUNICATION  UNION

		    ITU-T RECOMMENDATION SUMMARY


Rec. No. : E.502

Title :	Traffic measurement requirements for digital telecommunication 
	exchanges

Study Group : II - Network Operation

Version : Revised

Date of adoption : 1992

Notes :	


Recommendation E.502 applies to all digital telecommunications 
exchanges operating in a switched telephone network and ISDN.

Traffic measurements on exchanges and surrounding network provide the 
data base from which the dimensioning, planning, operation and 
management of the network are carried out.

Information gathered from these measurements can be used for:

	-   identifying traffic patterns and distributions on a route 
	    and destination basis;

	-   determining the amount of traffic in the exchange and the 
	    network;

	-   monitoring the continuity of service and the grade of 
	    service.

The above data and information are gathered with the purpose of 
supporting the following fundamental activities:

	a)   dimensioning, planning and administration of the exchange 
	     and surrounding network;

	b)   performance monitoring of the exchange and surrounding 
	     network;

	c)   network management;

	d)   operation and maintenance of the exchange and surrounding 
	     network;

	e)   tariff and marketing studies;

	f)   forecasting;

The information generated by the exchange (see Recommendation Q.544) 
can be provided to the end user in either real-time or non real-time 
(post processed). The activities being performed by the end user will 
dictate the speed of this response: for example, operation and 
maintenance will require real-time information while the forecasting 
and planning information can be provided after the event in non 
real-time.



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