NEC Univerge SV8100, Общее описание устройства

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UNIVERGE SV8100 Issue 5.02
General Description Manual 2 - 81
Uniform Numbering Network
Uniform Numbering Network allows multiple or compatible systems to be connected
in a network using Tie Lines. A station user can dial a system number and a station
number (open numbering) or dial the station number only (closed numbering) to
access any station. When the calling and called systems are not directly connected,
several Tie Lines may be accessed to route the call. Each system extends the call to
the next system until the final destination is reached. Networking provides a
seamless connection of multiple systems into a single “virtual” communications
system using Tie Lines with a unified numbering plan. Networking allows many
companies to connect their telephone systems so they appear as one. An extension
user in the network can easily dial another extension or transfer a call in the
Networking System. Calls are passed from network node to network node using a
protocol that contains information about the source of the call, the type of call and the
destination of the call.
Flexible Network Routing
Use network routes to set up single-channel networking between many separate
systems – or use multiple networking channels per system for greater network
performance. Data tables in the system program define the routing for each extension
in each network node. These tables are easily customized to meet the requirements
of each networking configuration. Users may place an intercom call or transfer a call
to any extension at any location by dialing an extension number. The system
analyzes each extension number received and determines how to route the call to its
final destination. The feature which handles this route selection is called Flexible
Routing (F-Routing). F-Routing also can select alternate routes to the destination
extension if the primary destination is busy. Up to 120 routes are available for
networking. After an extension number is dialed, the system checks the routing,
accesses the assigned trunk group and places the call. Each extension is assigned a
route or routes that decide which trunk group to access and any modified dialed data
if required.