NEC UNIVERGE SV9100 General Description Manual page 127

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.
Universal Slots
The UNIVERGE SV9100 has six universal slots, and up to four cabinets can be
installed. The system uses the same chassis for the 64, 256 and unlimited systems
to support up to 24 Universal Slots.
Up to four combined CHS2UG B-US/CHS2UG E (3-Slot Base/3-Slot Expansion) or
CHS2UG-US (6-Slot) chassis can be connected locally to reach the system's
maximum port capacity.
SV9100 General Description Manual
EXAMPLE:
0 CHS2UG-US (19" Chassis) & 4 CHS2UG B-US/CHS2UG E (9.5" Base Chassis/9.5"
Expansion Chassis)
1 CHS2UG-US (19" Chassis) & 3 CHS2UG B-US/CHS2UG E (9.5" Base Chassis/9.5"
Expansion Chassis)
Issue 2.0
2-89