System Functions and Features as of I7.9
212 Call routing
syd-0200/3.0 – I7.9 – 11.2009
System configuration
Tab. 72 Transferring three-party connections to the exchange: Settings
5. 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 Ascotel® IntelliGate® 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.
Parameter Parameter value
User configuration:
• Exchange access authorization yes
Network interface:
• TEI management P-MP
Trunk group configuration:
• Transfer hold to the exchange yes
• Three-party conference in the
exchange
yes
• Call transfer in the exchange yes
• Network type Public
• Protocol DSS1
• Trunk connections Group in the same trunk group all the basic accesses that are to support
the function
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