NEC NEAX2000 IVS2 system manual Transit Counter Relaying

CHAPTER 1 GENERAL INFORMATION

Service Features

Transit Counter Relaying

Transit counter is used as the information which informs the number of stages on tandem connection. On the Q-SIG network, the transit Counter 0 is sent from the calling office. The tandem office sends the transit counter to the destination office adding 1 to the value of received transit counter. In this manner, the transit counter value increases according to the number of the stages of tandem connection.

	Figure 1-10 Transit Counter
CALLING	TANDEM	TANDEM	TANDEM	DESTINATON
OFFICE	OFFICE	OFFICE	OFFICE	OFFICE
TRC=0	TRC=1	TRC=2	TRC=3	TRC=3

Q-SIG NETWORK

TRC: Transit Counter

•This feature is available when the all PBXs in the network are connected to each other by Q-SIG interface.

•The transit counter values 0 through 31 are available.

•If the tandem office does not receive the transit counter from the opposite office, the tandem office sends the transit counter as “0” to next office.

Page 16	NEAX2000 IVS2 Q-SIG System Manual
	ND-70923 (E), Issue 1.0