Call routing270 System functions and features as of R3.0syd-0367/1.3 – R3.0 – 03.20136. 10 Break-OutAn outgoing, external call is to be routed into the public ISDN only at the PINX thatis closest to the call destination. If the source PINX and gateway PINX are a longway apart and connected with each other via dedicated lines, break-out can helpto achieve considerable call charge savings.For the caller always to be available under the same number regardless of the pathvia which his calls are routed to the public network, the called party must always bepresented with a CLIP with that same number.If the call is transmitted to the public network via a gateway PINX, the CLIP numberwill be outside the registered number range. If the network operator is to forwardthe CLIP number, the service "Special Arrangement" will have to be utilized subjectto its availability from the network operator (see also page 77).Fig. 120 Break-out