Nortel Networks 9150 - Manual (Page 87)

Remote Gateway 9150 Installation and Administration Guide 57
January 2005 Planning for Remote Gateway 9150 unit installation
Numbering plans
Each trunk group at the Remote Gateway 9150 unit site must be assigned a trunk
access code (that is, the number dialed to obtain an outgoing trunk). In addition,
special prefix (SPRE) codes must be defined for the following features if you
want to use them:
!
paging
!
local calling on ATA-equipped analog devices
!
to go online or offline (for more details, refer to “Online/offline table” on
page 40)
!
registration and deregistration for multi-user or dynamic ports
All trunk access and SPRE codes are automatically defined in Configuration
Manager with a pound prefix (# in North America) so that there are no conflicts
with host PBX dialing plans. For a list of the default trunk access and SPRE
codes, refer to the “Remote Gateway 9150 Configuration Information—Dialing
Plans” form on page 384.
Numbering plan for local stations
Consider the numbering plan on the host PBX when setting up the numbering
plan for local stations at the Remote Gateway 9150 unit site. This ensures that
station-to-station calls through the host PBX complete correctly.
Call blocking
Call blocking can occur when there are more users installed and more calls
being processed than can be supported by the Remote Gateway 9150 unit’s DSP
application and trunk interface modules.
The voice processing capacity of the remote system depends on the number of
DSP application and trunk interface modules installed in the Remote Gateway
9150 unit and the amount of bandwidth available to process calls. If bandwidth
is not available, additional calls are blocked. (This setting is configured on the
RLC for each site). This voice processing capacity defines how many calls can
be active at one time.