| Exchange lines There are either 4 or 6 (non-expandable exchange line ports in the KSU. Some
of the more important parameters are discussed below.
Trunk Type
C.O. ports on the system may be programmed as CO, PBX or EMPTY. It is essential to
nominate all un-used ports as "empty" to ensure correct operation of system
features such as Abbreviated Dialling. If a port is nominated as "PBX", settings
such as "PBX auto pause time" and "PBX codes" are automatically
invoked. A Hytel door-station uses a standard "EXGE' port.
Dialing protocol
Each port can use Tone or Pulse dialling protocol.
Trunk routes
Exchange lines can be grouped into trunk-routes (maximum 8 routes) with each route
having one or more exchange lines. Up to two overflow routes can be nominated for each
trunk route. Lines are searched in a pre-determined order within each route (with SEQL
being the most common hunting method). It is essential to place a door-station in its own
separate trunk route.
Exchange line access
Users simply dial digit 9 (which can be easily changed to 0) to access a free
exchange line to make a call. Alternatively, they can press an "exchange line"
feature key to receive PSTN exchange dialtone. Dialling an abbreviated number
automatically selects a free exchange line and dials the stored number. Line Access
Assignment tables can be used to block outgoing access to a nominated line from defined
extensions. The Receive Assignment matrix is similarly used to prevent nominated
extensions from receiving incoming exchange line rings.
Incoming call ringing
Incoming exchange calls can be programmed to ring (a) nominated extension(s) or a
UCD group.
The UCD group can contain "ordinary" keysets or be
a Voicemail hunt-group (directing calls to a Digimail voicemail unit).
"Standard" UCD group members can receive calls in an "All ring",
"Distributed ring" or "Linear ring" pattern. Overflow and re-route
destinations can be provided for the UCD group.
The "Alternate Ringing Position" programming field
can be used to ring additional keysets if the call is not answered before the Alternate
Ring Timer expires (with keysets in the original group still continuing to be rung.
Toll Restriction & Class Of Service
The extension's COS setting combined
with the Toll Restriction tables allow (or
block) nominated numbers to be dialled from any given extension.
Least Cost Routing
LCR can be applied to outgoing
exchange calls with the dialled digit-string first passing through a set of modification
tables before eventually (after a non-adjustable 8-second delay) being outdialled.
External Loud Bell
A set of dry relay contacts are provided in the KSU to operate an external loud bell or alarm connected to the system.
the contacts close in sympathy with the incoming exchange ring on all the exchange lines
in (a) pre-programmed Trunk Route(s).
Private To
Programming an exchange line as "private to" an extension gives
that extension exclusive access to that line. All ringing-position programming for the
line is over-ridden and the line will ring only at the nominated extension. Private-trunk
calls can be transferred to other extensions or placed on system hold and retrieved by
other extensions.
| Benefits |
Exchange line access
The Line Access Assignment matrix give exchange line access to the business groups
that most require it. For example, outgoing exchange access may be limited to warehouse
extensions to ensure the company's sales-group access is less restricted.Incoming call ringing
Enormous flexibility exists within system programming for directing incoming
exchange calls to ring extensions in a defined manner. |
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