CTI Products NCB/IM with Internal PSTN Modem - Manual (Page 19)

CTI Products, Inc. NCB/IM User Guide
2. Setup and Operation 13
utilizing a portion of the connection bandwidth. This utilization is dynamic and only consumes bandwidth
when audio is detected into the “AUDIO” connector.
NOTE: Data throughput across the modem channel is decreased by 7200 bits-per-second
when audio input is detected at either handset. To maximize data throughput, handsets
should normally remain disconnected or the input audio be kept muted on any NCB that may
be installed where normal background noise could be detected by the handset. Audio input is
automatically un-muted when a connection is established.
DC Power Connection
DC power must be attached to the NCB module via the DC IN connector (see
“A
PPENDIX C. C ONNECTOR D ETAILS
”). Apply DC power to the NCB module
only after all other connections have been made. A wall plug-in style power
supply designed for the NCB module is an available option.
S TEP 4. I MPLEMENTATION IN A N ETWORK
Will a Network Management
Tool Be Used?

If NO, and the NCB will be used
with its factory default settings
(Repeater Mode), skip the rest of
this section. The NCB is ready to
function in a network.

If NO, and the DOS NCBCON
program will be used to access
and configure the Control Neuron
Processor, then see Technical
Note TN023.

If YES, and LonMaker For
Windows will be used, be certain
that ‘OPTION A Switch 5 is in
the DOWN position, and see
Commissioning the NCB with
LonMaker for Windows later in
this section.

If YES, and another Network
Management Tool will be used, be
certain that ‘OPTION A Switch 5
is in the DOWN position, then see
Technical Note TN026.
Why is a Network Management Tool
needed?
Factory Default Settings
An NCB could be placed in a network using the
configuration as it was shipped from the factory
(Repeater Mode, fixed Subnet/Node address). All
messages would simply be passed through the NCB.
This may suffice for small networks where channel
bandwidth and message timing issues are of no
concern.
Use of a Network Management Tool
If a larger network is planned, and channel bandwidth
limitations require segmentation of message traffic,
then a Network Management Tool should be used to
perform some or all of the following functions:

Assign unique addresses to each NCB Router
and Control Neuron

Configure domain address tables in routers

Optimally set Transaction Timers based on
Channel Delays

Configure forwarding tables in routers for traffic
segmentation
Tutorial . . .
?
DC IN