CTI Products NCB-EM with External PSTN Modem User Manual
Model NCB-EM
Network Combiner Module
with External Modem
Wide Area Router for LONWORKS® Networks
User Guide # S2-60695-310
68-11220-310
CTI Products, Inc. NCB-EM User Guide
Standard Limited Hardware Warranty
LIMITED WARRANTY. Equipment manufactured by CTI Products, Inc. is warranted to be free from defects in material and workmanship for
a period of ONE (1) YEAR from date of shipment to original purchaser. Under this warranty, our obligation is limited to repairing or replacing
any equipment proved to be defective by our inspection within one year of sale to the original purchaser. This warranty shall not apply to
equipment which has been repaired outside our plant in any way, so as to, in the judgment of CTI Products, Inc. affect its stability or reliability,
nor which has been operated in a manner exceeding its specifications, nor which has been altered, defaced, or damaged by lightning.
CUSTOMER REMEDIES. In the event of a defect, malfunction, or failure to conform to specifications established by the seller during the
period shown, the customer shall call CTI Products, Inc. to obtain a Return Authorization Number and return the product or module, shipping and
insurance prepaid. CTI Products, Inc., will then at its option, either repair or replace the product or module and return it, shipping prepaid, or
refund the purchase price thereof. On-site labor at the purchaser's location is not included in this warranty.
EQUIPMENT NOT MANUFACTURED BY CTI Products, Inc. Equipment not manufactured by CTI Products, Inc. is excluded from this
warranty, but is subject to the warranty provided by its manufacturer, a copy of which will be supplied to you upon specific written request.
NO OTHER WARRANTIES. The foregoing constitutes the sole and exclusive remedy of the buyer and exclusive liability of CTI Products,
Inc., AND IS IN LIEU OF ANY AND ALL OTHER WARRANTIES EXPRESSED OR IMPLIED OR STATUTORY AS TO
MERCHANTABILITY, FITNESS FOR PURPOSE SOLD, DESCRIPTION, QUALITY, PRODUCTIVENESS OR ANY OTHER MATTER.
NO LIABILITY FOR CONSEQUENTIAL DAMAGES. WITHOUT LIMITING THE FOREGOING, IN NO EVENT SHALL CTI
PRODUCTS, INC. OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION,
SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR FOR LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION,
LOSS OF BUSINESS INFORMATION, OR OTHER PECUNIARY LOSS) ARISING OUT OF THE USE OF OR INABILITY TO USE CTI
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EXCEED THE TOTAL AMOUNT PAID BY PURCHASER FOR THE EQUIPMENT GIVING RISE TO SUCH LIABILITY.
Location: CTI Products, Inc
Phone: +1.513.595.5900
Fax: +1.513.595.5983
Web: www.ctiproducts.com
E-mail, Sales: info@ctiproducts.com
Technical Support: lwsupport@ctiproducts.com
i
1211 West Sharon Road
Cincinnati, OH 45240 USA
CTI Products, Inc. NCB-EM User Guide
This manual covers NCB units of Revision 300 or higher and NCB/Plug software revision
1.00 or higher. The NCB Unit Revision can be found on the rear of the unit following the
letter “U”. The NCB/Plug software revision can be found on the Help/About screen of the
program. If the revision of the product in hand is greater than that shown above, there may
be additional features supported by the product that are not covered in this manual.
Information contained in this document is subject to change without notice and does not represent a commitment on the part of CTI
Products, Inc.
No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying
and recording, for any purpose without the written permission of CTI Products, Inc.
This manual describes products which include copyrighted CTI Products, Inc. computer programs in semiconductor memory. CTI
Products, Inc. reserves all rights for these programs, including the exclusive right to copy or reproduce the copyrighted computer programs
in any form. No copyrighted computer program contained in products described in this manual may be copied, reproduced, decompiled,
disassembled, or reversed engineered in any manner without express written permission of CTI Products, Inc. The purchase of products
from CTI Products, Inc. shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the
copyrights, patents, or patent applications of CTI Products, Inc., except for the normal non-exclusive, royalty fee license to use that arises
by operation of law in the sale of the product.
Copyright (c) 1995-2001 CTI Products, Inc. All rights reserved
NCB, NCB/EM, and WON are trademarks of CTI Products, Inc.
Echelon, LON, LONWORKS, LONTALK, and Neuron are U.S. registered trademarks of Echelon Corporation.
ii
CTI Products, Inc. NCB-EM User Guide
Radio Frequency Emissions and Immunity
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference
in which case the user will be required to correct the interference at his own expense. Changes or modifications to this unit not expressly
approved by the party responsible for compliance could void the user’s authority to operate the equipment. Limits specified in the standards listed
below are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
UNITED STATES: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the
FCC Rules.
CANADA: This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.
EUROPE: This equipment has been tested and found to comform with the following standards: EN60950, EN50082-1, IEC801-2, IEC801-3,
IEC801-4, and EN55022. This equipment complies with the requirements of the following directives: Low Voltage Directive 73/23/EEC, EMC
Directive 89/336/EEC, and 93/68/EEC Harmonization of CE Marking
iii
CTI Products, Inc. NCB-EM User Guide
TABLE OF CONTENTS
QUICK-START GUIDE ............................................................................................................................................. 1
1. INTRODUCTION ................................................................................................................................................... 3
WHAT IS AN NCB/EM UNIT? ..................................................................................................................................... 3
REFERENCE DOCUMENTS ........................................................................................................................................... 5
FRONT PANEL ............................................................................................................................................................. 6
REAR PANEL............................................................................................................................................................... 7
2. SETUP AND OPERATION .................................................................................................................................... 9
STEP 1. MOUNTING .................................................................................................................................................... 9
STEP 2. SWITCH SETUP .............................................................................................................................................. 9
STEP 3. ELECTRICAL CONNECTIONS ........................................................................................................................ 11
STEP 4. MODEM CONFIGURATION............................................................................................................................ 13
STEP 5. IMPLEMENTATION IN A NETWORK ............................................................................................................... 14
STEP 6. CONTROLLING THE WAN CONNECTION...................................................................................................... 17
3. NETWORK VARIABLE (NV) CONTROL ....................................................................................................... 19
TYPICAL NV BINDINGS ............................................................................................................................................ 19
MODEM CONTROLLER OBJECT ................................................................................................................................. 20
TELEPHONE DIRECTORY OBJECT .............................................................................................................................. 27
GLOBAL CONTROL OBJECT ...................................................................................................................................... 28
4. NCB/PLUG CONFIGURATION PLUG-IN ....................................................................................................... 30
INSTALLATION .......................................................................................................................................................... 30
ACCESSING NCB/PLUG .......................................................................................................................................... 31
USAGE ................................................................ ................................ ................................................................ ...... 31
APPENDIX ................................................................................................................................................................ 34
APPENDIX A. FACTORY DEFAULT CONFIGURATION ................................................................................................. 34
APPENDIX B. MOUNTING OPTIONS ........................................................................................................................... 36
APPENDIX C. CONNECTOR DETAILS ......................................................................................................................... 39
APPENDIX D. NCB VERSION COMPARISON .............................................................................................................. 41
APPENDIX E. TROUBLESHOOTING ................................................................ ............................................................ 42
APPENDIX F. SPECIFICATIONS .................................................................................................................................. 47
APPENDIX G. MODEM NOTES ................................................................................................................................... 49
APPENDIX H. RING MODE ........................................................................................................................................ 53
INDEX ........................................................................................................................................................................ 55
iv
CTI Products, Inc. NCB-EM User Guide
v
CTI Products, Inc. NCB-EM User Guide
QUICK-START GUIDE
This Quick Start Guide provides a concise series of steps to get a pair of the NCB modules “up and running” quickly so that
initial operation may be confirmed.
It is important that all LONWORKS devices attached to the “NETWORK” connector of any one NCB module use the same
network transceiver . See “LONWORKS NETWORK TRANSCEIVERS” in section “1. INTRODUCTION”.
In the following steps, identify the two units as “NCB Unit 1” and “NCB Unit 2”.
Switch Settings
Set the switches on the NCB units as follows:
If you are using the leased-line modems (MT2834BL), set the DIP switches on the side of those modems as
BAUD 1 : 7 BAUD 2 : 0 MODE 1 : C MODE 2 : C
OPTION B Switches 1 through 4 : UP
OPTION A Switches 1 through 4 and 6 through 8 : UP
OPTION A Switch 5 : DOWN
follows:
1: DOWN 5: # 9: DOWN 13: UP
2: UP 6: UP 10: UP 14: UP
3: UP 7: DOWN 11: DOWN 15: UP
4: UP 8: DOWN 12: DOWN 16: UP
# Set Switch 5 DOWN on Modem 1 and UP on Modem 2
Module Connection
Connect LonWorks network devices to the “NETWORK” connectors of each NCB unit (both RJ45s and the
terminal strip are in parallel). If using the RJ45 connector(s), connect to pins 1 & 2 (the right-most two pins) and
use caution, as other pins on these connectors carry DC power. On a three pin terminal strip connector (if
present), use the two left-most pins.
Connect the DB25 connector on the modem to the “PORT 1” connector on the rear of the NCB unit using the
cable supplied with the modem.
If using the dial-up modems (MT2834ZDX), connect each modem to a standard analog telephone line or PBX
port. If using the leased-line modems (MT2834BL), connect the “LEASED” or “PRIVATE” connectors on the
rear of each modem together using the telephone cord provided with the NCB unit.
Connect power to the modems (and switch them on), and to the NCB units via the front panel “DC IN” connector.
The units can be powered-up in any sequence. Both NCB Unit “ERR” LEDs will begin to flash.
NOTE: It is normal for the NCB Unit “ERR” LED to flash quickly for up to 30 seconds after power-up
or reset of a fully configured and connected NCB/EM. This indicates that any external modems
configured for use are in process of initializing. A problem is indicated only if the “ERR” LED locks on
or continues to flash for more than 30 seconds after power-up or reset.
If dial-up modems (MT2834ZDX) are being used, the NCB modules are ready for use once the “ERR” LEDs have
stopped flashing and can be given a dialing command. Proceed directly to “STEP 6. CONTROLLING THE WAN
CONNECTION”in section “2. SETUP AND OPERATION”.
If leased-line modems (MT2834BL) are being used, the initialization sequence for each is complete once the
“ERR” LED on the respective NCB unit has stopped flashing (this initialization sequence sets non-volatile
parameters in the modem and must be performed whenever a new modem is installed for use with an NCB unit).
Switch both modems and both NCBs into operational mode as follows:
MODEM DIP Switch 10: change to DOWN
NCB MODE 1, 2 : change to D
Power-cycle the modems and NCB units. The “ERR” LEDs will blink briefly, then stay off and the modems will
automatically begin the training sequence. Within 30 seconds, the “CD” LEDs on both modems will light
indicating a successful connection. The modules are now ready for use. Any LonTalk packets entering one NCB
unit will exit the other and vice-versa. Breaking then restoring the leased-line connection between the modems
will cause the connection to be automatically re-established.
NOTE: If using Leased-Line mode, this quickstart setup includes connecting the modems “back-to-
back” using 2 wire mode and a reduced transmit level. In an actual leased-line installation involving
longer telephone cable lengths, change MODEM DIP Switch 3 to DOWN to configure the modem to
output full transmit power, and set MODEM DIP Switch 16 UP for 2-wire mode or DOWN for 4-wire
mode.
Quick-Start Guide 1
CTI Products, Inc. NCB-EM User Guide
Quick-Start Guide 2
CTI Products, Inc. NCB-EM User Guide
CA-80070-100
LONWORKS
NODE
LONWORKS
NODE
LONWORKS
NODE
LONWORKS
NODE
NCB
LONWORKS
NODE
LONWORKS
NODE
LONWORKS
NODE
LONWORKS
NODE
NCB
STANDARD
VOICE GRADE
CIRCUIT
BUILDING 1
BUILDING 2
Read this
section to learn
the general
function and
capabilities of an
NCB Router
1. INTRODUCTION
WHAT IS AN NCB/EM UNIT?
The Network Combiner NCB/EMTM Module is a wide-area router with one or
two external modems used for LONWORKS networks. The NCB/EM unit is
used in pairs to connect LONWORKS networks real-time, spanning distances
from building-wide to worldwide.. The communication channel spanning the
distance between local networks can be any analog or digitized analog channel
that is capable of carrying V.34 standard modem signaling. NCB/EM units are
available with modems for standard dial-up Public Switched Telephone Network (PSTN) circuits, 2-wire or 4wire leased lines, microwave channels, PBX circuits, etc. Data transfer between distant networks via an NCB
module pair is "live", delayed only by the transit time through the routers and modem connections.
The NCB module uses router technology so that no custom coding or additional hardware is necessary to
seamlessly connect multiple networks across very large distances. The NCB module is self-contained, easily
configured with standard network management tools, and requires no custom programming or coding changes
in system nodes.
The NCB/EM unit contains a Modem Controller and a Telephone Directory objects
Basic Application
A basic application of the NCB module is where two multi-node LonWorks networks, separated by a distance
beyond the reach of conventional wired media, need to be interconnected, as in Figure 1. This distance could be
across a large building, business campus, city, etc. Using the NCB module, this interconnection is
accomplished using one NCB module local to each network site and a single voice-grade telephone circuit
connecting the two NCB modules. Additional networks can be added to this unified network by simply adding
an NCB module pair per network.
Figure 1 Networks in two buildings connected with NCB modules
LonWorks Network Transceivers
The local LonWorks networks at different sites do not need to use the same network transceiver type. For
example, an FTT-10A network, a TPT/XF-78 network, and a PLT-22 network can all be interconnected by
using pairs of NCB modules with network transceivers matching the local network at each site.
1. Introduction 3
CTI Products, Inc. NCB-EM User Guide
LONWORKS
NETWORK
Side
A
ROUTER
LONWORKS
TRANSCEIVER
“DC I N”
Connector
“NETWORK”
Connector
“PORT 1”
Connector
“PORT 2”
Connector
To Modem 1
To Modem 2
Side
B
SMX
TRANSCEIVER
POWER
SUPPLY
CONTROL
NEURON
PROCESSOR
See Appendix H
for Ring Mode
details.
NCB units are available with an option for LonWorks network transceiver type. The ordering code on the rear
of the NCB lists the installed options. This ordering code is of the form: NCB/EM-Txxx-xx, where ‘T’
indicates the transceiver type.
The following LonWorks network transceiver options are available:
A = FTT-10A K = SMX RS485
B = TPT/XF-78 M = SMX PL22
C = TPT/XF-1250 X = None (SMX ready)
Wide Area Network Ports
Normally Point-to-Point connections are made between pairs of NCB’s. A more
fault-tolerant network may be implemented by using the Ring Mode connection
topology.
External Serial Ports
“PORT 1” and “PORT 2” are standard asynchronous serial ports with individually configurable baud rates from
1200 to 115200 bps. An external modem can be connected to each port. “PORT 1” and “PORT 2” pinouts
allow direct connection to a modem via a standard 9 pin to 25 pin cable.
Data Flow
There are three sources of message packets within the NCB module. The first source is the LonWorks
NETWORK connector on the front of the unit. The second is the “PORT” connectors on the rear of the unit.
The third source is the Control Neuron Processor. Message packets originating from any of these sources are
sent to the other two. This message packet flow is shown in the block diagram of Figure 2.
Figure 2 NCB Network Combiner Block Diagram
The “NETWORK” connector attaches to the local LONWORKS network using a compatible transceiver
internal to the NCB module and is associated with Side B of the internal router.
The “PORT” connector attaches to the modem as the link to the NCB unit at the other network site and is
associated with Side A of the internal router.
The Control Neuron Processor allows network management messages to be sent to the NCB module for
connection control and status monitoring and is associated with Side A of the internal router.
1. Introduction 4
CTI Products, Inc. NCB-EM User Guide
Document
Source
Reference Number
Message Buffer Configuration
CD ROM or www.ctiproducts.com
Technical Note TN010
Use of External Modems other
than Multitech
CD ROM or www.ctiproducts.com
Technical Note TN011
Using Explicit Messages to
Configure and Monitor Dialing
Parameters of an NCB
CD ROM or www.ctiproducts.com
Technical Note TN022
Using NCBCON to Configure
and Monitor Dialing
Parameters of an NCB
CD ROM or www.ctiproducts.com
Technical Note TN023
Setting the PCNSS Card to
Network Interface Mode
CD ROM or www.ctiproducts.com
Technical Note TN024
SMX Transceiver Installation
CD ROM or www.ctiproducts.com
Technical Note TN025
NCB Installation with Network
Management Tools
CD ROM or www.ctiproducts.com
Technical Note TN026
LonWorks Router User’s Guide
Echelon
078-0018-01B
Router Function
The router contained in each NCB module may be configured as a repeater, bridge, or configured router. The
easiest configuration is as a repeater, where all messages which enter the NCB module (via any of the three data
sources described above) are simply passed to the other two sources, regardless of the domain, subnet/node, or
group destination address. A bridge only passes messages that match one of the two domain IDs configured on
the router. A configured router only passes messages that match a domain ID as well as a set of subnet or group
numbers. The proper choice of router mode depends on desired simplicity of installation versus required
system performance.
REFERENCE DOCUMENTS
The following additional information is available from the sources indicated.
1. Introduction 5
CTI Products, Inc. NCB-EM User Guide
1234567
8
ON
OPTION A
DC IN
ERR
ACT
PWR
NETWORK
OUT
IN
RSVC
CSVC
RESET
CMD
NCB
NETWORK COMBINER
NETWORK
PWR LED Indicates correct input power
ERR LED Indicates an error condition
ACT LED Indicates LonWorks packet
activity in router
LonWorks NETWORK Connections
RJ45 and Screw Terminal
CMD Button Temporarily enables Auto-
Answer mode (see below)
CSVC Button Initiates Service Request
from Control Neuron
RSVC Button Initiates Service Request
from Router
RESET Button
DC IN Connector for input power
OPTION A Switches
Selects LonWorks
Addressing parameters.
(See Setup and
Operation for more detail)
FRONT PANEL
Figure 3 NCB Front Panel
Front Panel Indicators and Buttons
PWR LED (Green) - Indicates condition of DC input power or a “Wink” command.
Always On: Correct DC input power is present.
Flashing Continuously: DC input to module is below minimum required voltage.
Flashes for 2 Seconds: A “Wink” network management command has been sent to the Control
Neuron Processor.
ERR LED (Red) – Indicates a possible error condition.
Always On: A diagnostic error has been detected. Press the “RESET” button. If the “ERR” LED now
stays off, the EEPROM contained invalid data and has been reinitialized. Any non-volatile
information must be re-entered by using the NCB/Plug plug-in or the DOS NCBCON program. If the
LED stays on solid, a hardware problem is indicated. Contact technical support for assistance.
Slow Flash: (once per second) LonWorks configuration information is insufficient. Using a Network
Management Tool, re-commission the internal router nodes (and optionally, the Control Neuron
Processor node).
Quick Flash: (twice per second) A serial port configured for use (“BAUD” switch set to a value that is
not ‘0’) does not detect an attached modem or is in the process of initializing it. In Ring Mode, this
could also indicate that duplicate Unit Numbers have been detected in the Ring.
ACT LED (Yellow) - Indicates a packet has been passed by the NCB router.
1. Introduction 6
CTI Products, Inc. NCB-EM User Guide
123
4
ON
897
A
B
C
D
E
F01
2
345
689
7
A
B
C
D
E
F01
2
345
689
7
A
B
C
D
E
F01
2
345
6
OPTION B
PORT 2
BAUD 1
BAUD 2
123
4
678
9
5
PORT 1
123
4
678
9
5
897
A
B
C
D
E
F01
2
345
6
MODE 1
MODE 2
BAUD 1 and BAUD 2 Switches
Baud rate selection for Port 1
and Port 2. See Section 2,
Step 2 for more detail.
MODE 1 and MODE 2 Switches
The NCB-EM unit is normally
operated in MODE C or D.
See Section 2, Step 2 for
OPTION B Switches
See Section 2, Step 2 for
more detail.
PORT 1 and PORT 2 Connectors
Asynchronous serial data
CMD Button
This button can be used to temporarily enable the Auto Answer function in Dial-up mode. This is useful if
Auto Answer mode has been inadvertently disabled on a remote NCB. When this occurs, and a connection with
this remote unit is broken, it will no longer automatically answer an incoming call. To re-enable Auto Answer
mode, proceed as follows:
Press and hold the “CMD” button on the remote NCB
Press and release the “RESET” button on the remote NCB.
Wait until the “PWR” LED begins to flash on the remote NCB, then release the “CMD” button.
These steps will temporarily enable Auto Answer mode for the remote NCB for one incoming call. Use
NCB/Plug, NCBCON, or explicit messages to re-enable Auto Answer mode for future connections.
REAR PANEL
1. Introduction 7
Figure 4 NCB Rear Panel
CTI Products, Inc. NCB-EM User Guide
1. Introduction 8
CTI Products, Inc. NCB-EM User Guide
1234567
8
ON
1. Not Used
2. Not Used
3. Not Used
4. Not Used
5. Control Neuron Addressing Method....... Hardware Network Management Tool
6. Control Neuron Hardware Subnet/Node 255/2 255/1
7. Not Used
8. Not Used
UP DOWN
See Appendix B
for Mounting
Option details.
Follow the steps
in this section to
setup an NCB
Router for the
first time
2. SETUP AND OPERATION
STEP 1. MOUNTING
Non-slip rubber feet are included on all NCB modules to allow them to
conveniently rest on any horizontal surface. Four 6-32 threaded holes are also
available on the bottom of the module to allow bolting of the module in any
convenient orientation. WARNING: Care should be taken to limit protrusion
of the screw into the module to no more than 0.125 inch from the module bottom surface!
Mounting kits are available as options to allow wall or rack (19” EIA) mounting
of the NCB module.
When wall or rack mounting the NCB, a suitable safety and protective earth
ground should be provided to the metal enclosure. The protective earth ground
provides a path to ground for electrostatic discharge (ESD) energy. This
connection is most conveniently made directly to the wall mount bracket or rack plate.
STEP 2. SWITCH SETUP
OPTION A Switches
OPTION A switches set the LonWorks addressing parameters (switches 5 and 6). Leave the unused switches
in the UP position. The position of the OPTION A switches are read by the NCB at module power-up or after
pressing the “RESET” button on the front panel.
Setting the LonWorks Addressing Parameters (Switches 5 and 6)
Switches 5 and 6 provide a simple (but very limited) method of setting the LonWorks domain/subnet/node
address of the internal Control Neuron Processor. This method is useful for systems with two NCB modules,
but does not provide enough flexibility for larger systems. (Standard Network Management Tools are a much
better choice.) For more information on setting this address, see “STEP 5. IMPLEMENTATION IN A NETWORK”
for a tutorial on network management tools.
If OPTION A Switch 5 is UP, Switch 6 determines a static subnet/node address for the Control Neuron
Processor: Switch 6 DOWN fixes the Control Neuron Processor subnet/node address at 255/1 in the
zero-length domain, while Switch 6 UP fixes the subnet/node address at 255/2 in the zero-length
2. Setup and Operation 9
domain. This setting allows for a quick evaluation of the NCB modules, requiring minimal user setup.
CTI Products, Inc. NCB-EM User Guide
1. PORT 1 Auto Answer Mode .............Disabled Enabled (Normal)
2. PORT 1 DSR sense.........................Disabled Enabled (Normal – Leave UP for Leased-Line)
3. PORT 2 Auto Answer Mode .............Disabled Enabled (Normal)
4. PORT 2 DSR sense.........................Disabled Enabled (Normal – Leave UP for Leased-Line)
DOWN UP
123
4
ON
Signal
Direction
Function
DSR
Input to NCB
Active when a connected device is functioning.
This signal is driven by the connected device’s DTR signal.
If driven inactive, NCB front panel “ERR” LED will flash quickly, and NCB
will not communicate with this device.
If DSR signal is not available from connected device, strap to DTR output.
DTR
Output from
NCB
Always driven active by NCB.
Position
Function/Baud Rate
0
Disable Port
1
1200 Baud
2
2400
3
4800
4
9600
5
19200
6
38400
7
57600
8
115200
897
A
B
C
D
EF0
1
2
3
4
56897
A
B
C
D
EF0
1
2
3
4
5
6
BAUD 1
BAUD 2
If OPTION A Switch 5 is DOWN, dynamic determination of the domain/subnet/node number by a
Network Management Tool is allowed.
OPTION B Switches
OPTION B switches set the Automatic Answer feature of the dial-up type external modem and Serial Port
Handshaking options.
A dial-up type external modem can be commanded to dial out regardless of its’ Auto Answer Mode
Enable/Disable setting.
DSR/DTR handshaking informs the NCB that a connected device is active. If the channel does not directly
support DSR/DTR handshaking, DSR must be strapped back to the (always active) DTR output signal.
When enabled, the operation of DSR/DTR is as follows:
BAUD Switches
“BAUD 1” and “BAUD 2” switches correspond to “PORT 1” and “PORT 2” connectors and allow either
disabling the port for use or enabling it at a specific baud rate.
NOTE: Set the “BAUDn” switch to 0 if the respective port will not be used. This is
important, as the front panel “ERR” LED will flash continuously if a serial port “BAUD”
switch is non-zero and no modem is connected.
2. Setup and Operation 10
CTI Products, Inc. NCB-EM User Guide
Modem Type
MODE Setting
Dial-Up
C
Leased-Line
D
897
A
B
C
D
EF0
1
2
3
4
56897
A
B
C
D
EF0
1
2
3
4
5
6
MODE 1
MODE 2
NETWORK
OUT
IN
NETWORK
See Appendix C
for pinouts and
cable diagrams.
PORT 1
123
4
678
9
5
See Appendix C
for Connector
Details
NOTE: When used with the current external dial-up modem (with “MODE” switch set to C),
the baud rate is fixed internally to 57600 bps and the “BAUD” switches have no effect other
than setting 0 will still disable the port for use.
Mode Switches
“MODE 1” and “MODE 2” switches allow setting the NCB for compatibility with certain types of external
modems (i.e. dial-up or leased-line). A different type of modem can be connected to each port. NOTE:
previous versions of the NCB unit have only one “MODE” switch. It this case, two modems can still be
connected to a single NCB unit, but they must both be of the same type (either both dial-up or both leased-line).
STEP 3. ELECTRICAL CONNECTIONS
LonWorks Network Connection
The local LONWORKS network must be attached to the NCB module via the “NETWORK” connector following
standard Echelon guidelines as to cable type, cable length, and termination appropriate for the selected
transceiver.
The dual RJ45 “NETWORK” connector allows a
daisy-chained network connection method, as the
network pins of the two RJ45 connector are directly
paralleled. Note that other pins on the RJ45 are
connected to circuit ground and DC power.
The 2 pin removable terminal strip is wired in parallel with the network connections
on the dual RJ45 connector.
NOTE: If your NCB module was purchased without a LonWorks transceiver (SMX-ready),
refer to Technical Note TN025 to install your SMX transceiver.
Modem Connection
Connect the external modem(s) to “PORT 1” (and
“PORT 2” if two modems are being used) on the rear
of the NCB unit using the cable(s) supplied with the
modem(s) (this is a standard 9 pin to 25 pin modem
cable). Attach the telephone line and provide power
to the external modem(s) per the modem manufacturer requirements.
NOTE: Set the BAUD 1, BAUD 2, MODE 1, MODE 2, and OPTION B switches
according to information in section “2. SETUP AND OPERATION”, “STEP 2. SWITCH SETUP”
BEFORE powering up the NCB module.
2. Setup and Operation 11
CTI Products, Inc. NCB-EM User Guide
See “Appendix G.
Modem Notes”
for 4-Wire
Leased-Line
pinouts and wire
colors.
DC IN
Dial-Up Modems
A dial-up connection uses a 2-wire connection scheme to a standard telephone circuit. A standard telephone
cord can be used.
Leased-Line Modems
A leased-line connection can use either a 2-wire or 4-wire scheme to a dedicated leased-line circuit:
2-Wire Leased-Line
In 2-wire Leased-Line mode, the audio circuit must pass audio simultaneously in both directions. For this
mode, use pins 3 & 4 (red and green) of the “LEASE/PRIVATE” connector. Pins 2 and 5 are unused in 2-wire
mode.
For testing “on the bench” in 2-wire Leased-Line mode, two modems may be connected “back-to-back” using
the standard modular telephone cable provided with each modem. For this short cable back-to-back
connection, however, MODEM DIP Switch 3 must be placed in the UP position (followed by resetting the
NCB unit) on BOTH NCB units. This lowers the transmit level to prevent clipping of the signal due to the
short (near lossless) cable. Be sure to return MODEM DIP Switch 3 to the DOWN position before installing
the modem in the field. (Leased-Line modems designed for use in the United Kingdom will require a cable that
uses the outer 2 pins of a 6-pin RJ11 connector.)
4-Wire Leased-Line
In 4-wire Leased-Line mode, two pairs are used, one for Transmitting to the other
NCB and one for Receiving from the other NCB. For this mode, pins 3 & 4 (red
and green) of the “LEASE/PRIVATE” connector carries ‘transmit audio’ from
this unit to the other unit and pins 2 & 5 (black and yellow) carries ‘receive audio’
to this unit from the other unit. A 4-wire leased-line telephone circuit has two
channels and each channel carries audio in only one direction.
For testing “on the bench” in 4-wire Leased-Line mode, two NCB units with
modems must be connected “back-to-back” by connecting the transmit pair of each unit to the receive pair of
the opposite unit. This cannot be done with the telephone cable having modular connectors on both ends, as
this cable is wired “straight through”. Instead, use the modular plug to spade lug cables provided. Also, for this
short cable back-to-back connection, MODEM DIP Switch 3 must be placed in the UP position on BOTH
modems (followed by resetting the modems). This lowers the transmit level to prevent clipping of the signal
due to the short (near lossless) cable. Be sure to return MODEM DIP Switch 3 to the DOWN position before
installing the modem in the field.
DC Power Connection
DC power must be attached to the NCB module via the DC IN connector (see
“APPENDIX C. CONNECTOR DETAILS”). 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.
2. Setup and Operation 12
CTI Products, Inc. NCB-EM User Guide
STEP 4. MODEM CONFIGURATION
MultiTech Modem Model MT2834ZDX (Dial-Up)
Configuration of this external dial-up modem is performed automatically by the NCB module. No manual user
intervention is required.
MultiTech Modem Model MT2834L (Leased-Line)
This external leased-line/dial-up modem must be configured before use with the NCB module. Configuration
parameters are stored in the non-volatile memory of the modem and, therefore, only needs to be performed
when first installing (or replacing) the modem. Use the following steps to configure this modem model:
a) Set the DIP switches on the side of the modem as follows:
1: DOWN 5: # 9: DOWN 13: UP
2: UP 6: UP 10: UP 14: UP
3: * 7: DOWN 11: DOWN 15: UP
4: UP 8: DOWN 12: DOWN 16: UP for 2-Wire, or
DOWN for 4-Wire
* Set DOWN normally, UP to connect modems back-to-back with a short cable.
# For a single dedicated phone line, one modem must have switch 5 DOWN, the other modem
must have switch 5 UP.
b) Set NCB module switches as follows:
MODE 1: C BAUD 1: 7 BAUD 2: 0 OPTION B, 1 & 2: UP
c) Connect the modem to the NCB “PORT 1” connector.
d) Power up the NCB unit and the modem (any order).
e) Wait for the “ERR” LED on the front of the NCB unit to stop flashing. When it does, power down the
NCB unit and the modem.
f) Change DIP switch 10 on the modem to DOWN.
g) Reconnect the modem to the desired NCB “PORT 1” (if different from the NCB used for
configuration) and change “MODE 1” to the “D” position.
h) Re-power the NCB unit and modem.
2. Setup and Operation 13
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