Call routing
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System functions and features as of R3.0
syd-0367/1.3 – R3.0 – 03.2013
6. 8 Transit Routing in the Private Leased-Line Network
When a PINX forwards a call on the network side, it is a transit routing.
If a PINX routes a call from the public network to the private leased-line network or
vice versa, it assumes a gateway function. It therefore acts as the gateway PINX for
the call.
If a PINX routes a call from a PINX in the private leased-line network to another
PINX in the private leased-line network, it assumes a transit function. It therefore
acts as the transit PINX for the call.
In this chapter you will find out how Aastra 400 resolves the gateway and transit
function , and the settings required.
Note:
A transit call must never be routed from network to network via the same
trunk group; otherwise this may lead to endless loops and block all avail-
able B channels.
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