Adtran Dual DSU III Module User Manual
Dual DSU-DP
Option Module & Plug-On Board
Option Module PN 1200127L1#HS
Plug-On Board PN 1200128L1
USER MANUAL
61200.128L1-1A
April 1996
901 Explorer Boulevard
P.O. Box 070020
Huntsville, AL 35807
Phone: (205) 971-8000
Fax: (205) 971-8699
© 1996 ADTRAN, Inc.
All rights reserved.
Printed in USA.
FEDERAL COMMUNICATIONS COMMISSION
RADIO FREQUENCY INTERFERENCE STATEMENT:
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. These limits are designed
to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. 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
frequencies. 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.
WARNING:
Change or modifications to this unit not expressly approved by the party
responsible for compliance could void the user’s authority to operate the
equipment.
Table of Contents
Table of Contents
Table of Contents
Chapter 1 Introduction
Product Overview............................................................................................... 1
DDS Overview ............................................................................................. 3
Switched 56 Overview ................................................................................ 3
Chapter 2 Installation .................................................................................. 5
Unpack and Inspect ........................................................................................... 5
Shipped by ADTRAN .................................................................................. 5
Adapter Cables ............................................................................................ 5
Provided by Customer ................................................................................ 5
Installing the Option Module ............................................................................ 6
Placement of the Option Module ............................................................... 6
Power Connection....................................................................................... 6
Attaching the Plug-On Board ...................................................................... 7
Rear Panel ........................................................................................................... 8
DTE Data Connection ........................................................................................ 9
Main DTE Data Connection/Primary DTE ....................................................... 9
Configuration ................................................................................................... 11
Configuration Methods ............................................................................. 12
AT Commands .......................................................................................... 12
V.25 bis Commands.................................................................................. 13
SDLC Option ...................................................................................... 13
Character Format ........................................................................ 13
Command Structure ................................................................... 13
Bi-Sync Option ................................................................................... 14
Character Format .........................................................................14
Command Structure ....................................................................14
Asynchronous Option ........................................................................ 14
Character Format .........................................................................14
Command Structure ....................................................................14
Command Descriptions ..................................................................... 14
Syntax and Possible Responses ......................................................... 15
CIC (Connect Incoming Call) .................................................... 15
CNL (Configuration Local) ........................................................ 16
CNR (Configuraton Remote) ...................................................... 16
Switched 56 Operation ...................................................................... 17
CRN (Call Request with Number)...............................................17
CRS (Call Request Using Stored Number)..................................17
61200.128L1-1 Dual DSU-DP User Manual i
Table of Contents
DIC (Disregard Incoming Call) .................................................. 18
PRN (Program Number) ............................................................. 18
RLN (Request List of Numbers) ................................................. 18
Chapter 3 Operation
Overview ........................................................................................................... 19
Menu Structure.......................................................................................... 19
MenuOperation ......................................................................................... 21
Chapter 4 Configuration
Configuration Overview .................................................................................. 23
Local and Remote Configuration ............................................................. 23
Configuration Menu .................................................................................. 23
Configuring Network Options ........................................................................ 25
Network Options ...................................................................................... 25
Network Rate............................................................................................. 25
Network Address....................................................................................... 27
Remote Configuration Option .................................................................. 28
Network Type............................................................................................ 29
Configuring DTE Options ............................................................................... 30
DTE Rate.................................................................................................... 30
Data Format............................................................................................... 32
DTE Command Option ............................................................................ 33
Transmit Clock.......................................................................................... 34
CS Options ................................................................................................ 36
Anti-Stream ..................................................................................................... 39
CD Options ............................................................................................... 41
TR Options ................................................................................................ 42
SR Options ................................................................................................ 43
Test Options ..................................................................................................... 44
Test Timeout ............................................................................................. 44
Remote Digital Loopback ......................................................................... 45
Configuring Dial Options ................................................................................ 46
Phone Number .......................................................................................... 46
Auto Answer .............................................................................................. 47
Manual Command ........................................................................................... 48
Chapter 5 Dialing
Dialing Overview .............................................................................................. 51
1. No Call Active ......................................................................... 52
2. Call Is Active ........................................................................... 53
3. Receiving an Incoming Call with Auto Answer Disabled...... 53
ii DSU DP User Manual 61200.128L1-1
Table of Contents
Chapter 6 Testing & Troubleshooting
Test Overview ................................................................................................... 55
Initiating a Test.......................................................................................... 56
DSU-DP Test Operation ............................................................................ 57
Tests Using the TEST Pattern Generator........................................... 57
Remote Test ........................................................................................ 60
Troubleshooting ............................................................................................... 61
Messages from the DSU/CSU .................................................................. 61
Troubleshooting New Installs................................................................... 62
Test Sequence for Troubleshooting New Installs
or Existing Circuits ............................................................................ 63
Local Unit Diagnostics ..................................................................................... 64
DTE and NET ............................................................................................ 65
Test Description ................................................................................. 65
Test Purpose ....................................................................................... 65
Initiating ............................................................................................. 66
Interpreting Test Results .................................................................... 66
NET Only (RT) .......................................................................................... 67
Test Purpose ....................................................................................... 67
Initiating ............................................................................................. 67
Interpreting Test Results .................................................................... 68
DTE Only................................................................................................... 69
Test Purpose ....................................................................................... 69
Initiating ............................................................................................. 70
Interpreting Test Results .................................................................... 70
DTE with Test Pattern ............................................................................... 71
Test Purpose ....................................................................................... 71
Initiating ............................................................................................. 71
Interpreting Test Results .................................................................... 72
TP to Network ........................................................................................... 73
Test Purpose ....................................................................................... 73
Initiating ............................................................................................. 73
Interpreting Test Results .................................................................... 74
Exit Test ..................................................................................................... 74
Remote Unit Diagnostics ................................................................................. 75
Test Purpose ....................................................................................... 76
Initiating ............................................................................................. 76
Test Results ........................................................................................ 76
Interpreting Test Results .................................................................... 76
61200.128L1-1 Dual DSU-DP User Manual iii
Table of Contents
Chapter 7 Status Selection
STATUS Display ............................................................................................... 77
DSU Operational Status ............................................................................ 78
DDS Network Status ................................................................................. 78
Network Rate............................................................................................. 79
DTE Rate/Mode ........................................................................................ 79
DTE Control Leads and Status ................................................................. 80
Appendix A AT Commands........................................................................ 81
Appendix B Default Configuration Profiles .............................................. 83
Default Configuration Profiles......................................................................... 83
Profile 1 ....................................................................................... 83
Profile 2 ....................................................................................... 83
Appendix C DSU to Modem Interconnect ................................................. 85
Modem Tail Circuit Application ...................................................................... 85
Appendix D EIA-232 Connector ................................................................. 87
56 and 64 kbps Application ............................................................................ 87
Appendix E DSU-DP Configuration Menu Tree ........................................ 89
Appendix F Troubleshooting Supplement................................................. 93
TSU History Buffer Alarms .............................................................................. 93
OUT OF SERVICE (OOS) ........................................................................ 93
DTE Streaming .......................................................................................... 94
When Alarms Clear ................................................................................... 94
Non-Alarm Conditions in History Buffer ........................................................ 94
OCU LB BY CO ........................................................................... 94
CSU LB BY CO ON ..................................................................... 94
DSU LB BY CO ON ..................................................................... 94
IN RDL BY FAR ........................................................................... 94
SLAVED RMT CNF ..................................................................... 94
EIA LLB ON................................................................................. 94
LOCAL TEST ON ........................................................................ 95
REMOTE TEST ON ..................................................................... 95
REMOTE CONF ON ................................................................... 95
TEST OFF .................................................................................... 95
REMOTE CONF OFF.................................................................. 95
iv DSU-DP User Manual 61200.128L1-1
Table of Contents
Figures
Figure 1-1 Sample Point-to-Point Application for Dual DSU-DP................... 2
Figure 2-1 Installing the Option Module ....................................................... 6
Figure 2-2 Attaching the Plug-On Board........................................................ 7
Figure 2-3 DSU-DP Option Module Rear View ............................................. 8
Figure 3-1 TSU 100 Main Menu ................................................................... 20
Figure 4-1 Setting Network Rate Options .................................................... 25
Figure 4-2 Setting the Network Address ...................................................... 27
Figure 4-3 Enabling/Disabling Remote Configuration................................ 28
Figure 4-4 Setting Network Type Options ................................................... 29
Figure 4-5 DTE Rates for 56 or 64 kbps Network Rate ............................... 30
Figure 4-6 Selecting Asynchronous or Synchronous Data Format ............. 32
Figure 4-7 Selecting the DTE Command Option......................................... 33
Figure 4-8 Transmit Clock Options.............................................................. 34
Figure 4-9 Selecting CS Options .................................................................. 36
Figure 4-10 Anti-Stream Options ................................................................... 39
Figure 4-11 Selecting CD Options.................................................................. 41
Figure 4-12 Selecting TR Options .................................................................. 42
Figure 4-13 Setting SR Options ...................................................................... 43
Figure 4-14 Setting Test Timeout Option ....................................................... 44
Figure 4-15 Remote Digital Loopback ........................................................... 45
Figure 4-16 Editing Stored Phone Numbers .................................................. 46
Figure 4-17 Enabling/Disabling the Auto Answer Function.......................... 47
Figure 4-18 Manual Command....................................................................... 48
Figure 5-1 Menu Path to Initiate a Call ........................................................ 51
Figure 6-1 Normal Operation Before Initiating Loopback Test ................... 55
Figure 6-2 Initiating a Test ............................................................................ 56
Figure 6-3 Complete Test Menu ................................................................... 58
Figure 6-4 Remote Test Example.................................................................. 60
Figure 6-5 DTE & Net Test ........................................................................... 65
Figure 6-6 Initiating a DTE & Net Test ........................................................ 66
Figure 6-7 Loop Only Test ............................................................................ 67
Figure 6-8 Initiating a Net Only Test ............................................................ 67
Figure 6-9 DTE Only Test Diagram .............................................................. 69
Figure 6-10 Initiating a DTE Only Test .......................................................... 70
Figure 6-11 DTE with Test Pattern ................................................................. 71
Figure 6-12 Initiating a DTE Test with Test Pattern....................................... 72
Figure 6-13 Test Pattern Only ........................................................................ 73
Figure 6-14 Initiating a Test Using a Test Pattern ........................................... 74
Figure 6-15 V.54 RDL with Test Pattern ......................................................... 75
Figure 6-16 Initiating a Remote Test .............................................................. 76
Figure 7-1 Examples of Status Displays ....................................................... 77
61200.128L1-1 Dual DSU-DP User Manual v
Table of Contents
Figure C-1 DSU to Modem Interconnet ......................................................... 85
Figure D-1 EIA-232 Connector ....................................................................... 87
Figure E-1 DSU-DP Configuration Menu Tree .............................................. 91
Tables
Table 2-A Pin Assignments for Primary EIA-232 Cable ............................... 9
Table 2-B Pin Assignments for Primary V.35 Cable ................................... 10
Table 2-C Configuration Methods .............................................................. 12
Table 4-A Loop Rate Commands ................................................................ 26
Table 4-B Network Address Command ...................................................... 27
Table 4-C Remote Configuration Commands............................................. 28
Table 4-D Network Type Commands .......................................................... 29
Table 4-E DTE Rate AT Commands ............................................................ 31
Table 4-F Data Format Commands ............................................................. 32
Table 4-G Transmit Clock AT Commands .................................................. 34
Table 4-H CS Options AT Commands ........................................................ 37
Table 4-I Short and Long Delays at Different Operating Speeds .............. 38
Table 4-J Anti-Stream AT Commands ........................................................ 4 0
Table 4-K CD Options AT Commands........................................................ 41
Table 4-L TR Options AT Commands ........................................................ 42
Table 4-M SR Options AT Commands......................................................... 43
Table 4-N Test Timeout AT Commands ...................................................... 44
Table 4-O Remote Digital Loopback AT Commands.................................. 45
Table 4-P AT Commands for Storing Phone Numbers .............................. 46
Table 4-Q AT Commands for Auto Answer ................................................. 47
Table 4-R Manual Commands ..................................................................... 49
Table 6-A Values for TST ERR=XXXX ......................................................... 58
Table 6-B Messages from the DSU-CSU ..................................................... 61
Table 6-C Troubleshooting New Installs ..................................................... 62
Table 6-D Test AT Commands ..................................................................... 64
Table 6-E Remote Tests and AT Commands ............................................... 75
Table A-A AT Commands ............................................................................. 81
Table A-B Test Pattern Commands.............................................................. 82
Table B-A Default Configuration Profiles .................................................... 84
vi Dual DSU-DP User Manual 61200.128L1-1
PRODUCT OVERVIEW
The ADTRAN Dual DSU-DP provides a reliable, high
speed data connection for customer data terminal
equipment (DTE) through the ADTRAN TSU/HSU DS0
port. It provides compatibility with digital data service
(DDS), or Switched 56 network (SW56) services. The
Dual DSU-DP supports both synchronous and asynchronous data communication over the DDS or Switched 56
networks.
Chapter 1. Introduction
Chapter 1
Introduction
This unit is an all rate DSU, supporting services from 2.4
to 64 kbps including 19.2 and 38.4 kbps services. The
Dual DSU-DP may be used in either point-to-point or
multi-point circuits.
The Dual DSU-DP provides both V.35 and EIA-232
electrical and physical DTE interfaces through either an
ADTRAN HD-to-RS-232 cable (PN 1200167L2) or
ADTRAN HD-to-V.35 cable (PN 1200167L1) to accommodate a variety of applications.
In addition to DDS, the unit also supports Switched 56
(4-wire) service with dialing accomplished from either
the front panel or the DTE interface using either the AT
command set or the V.25 BIS command set. This model
is compatible with AT&T Accunet and U.S. Sprint®
SW56 type services.
61200.128L1-1 Dual DSU-DP User Manual 1
Chapter 1. Introduction
ENTER
CANCEL
SHIFT
SHIFT
RS CS TD RD CD ALM TST
DSU III DBU
ENTER
CANCEL
SHIFT
SHIFT
RS CS TD RD CD ALM TST
DSU III DBU
ENTER
CANCEL
SHIFT
SHIFT
RS CS TD RD CD ALM TST
DSU III DBU
Figure 1-1 shows a sample point-to-point application for
the Dual DSU-DP.
DSU III AR
DSU III DBU
ENTER
RS CS TD RD CD ALM TST
CANCEL
Up to four
DTE ports
per module
TSU/HSU
F
DDS
Network
T1
DSU III DBU
ENTER
RS CS TD RD CD ALM TST
CANCEL
Router DSU III AR
DSU III AR
Router
C
1 2 3
DAEBF
4 5 6
7 8 9
SHIFT
SHIFT
#0
*
DSU III DBU
ENTER
RS CS TD RD CD ALM TST
CANCEL
56 kbps
C
1 2 3
DAEBF
4 5 6
7 8 9
SHIFT
SHIFT
#0
*
Router
Sample Point-to-Point Application for Dual DSU-DP
C
1 2 3
DAEBF
4 5 6
7 8 9
SHIFT
SHIFT
#0
*
Router
Figure 1-1
2 Dual DSU-DP User Manual 61200.128L1-1
DDS Overview
Digital Data Service (DDS) is a nationwide service that
allows interconnection and transport of data at speeds
up to 64 kbps. The local exchange carriers provide the
local loop service to DDS customers and may provide
data for routing Inter-LATA to an interexchange carrier.
In DDS mode, the Dual DSU-DP supports all DDS
service rates yielding DTE rates of 2.4, 4.8, 9.6, 19.2, and
38.4 (sync or async); and 56 and 64 kbps (sync only).
An additional rate of 57.6 kbps is available in async
mode. At the service rates of 56 kbps and 64 kbps, the
unit can be configured to run slower DTE rates (async or
sync).
Switched 56 Overview
This switched Digital Data Service allows customers to
pay for data connection only for the time the circuit is
connected. The regional operating companies or
interexchange carriers provide the service to SW56
customers. In SW56 mode the Dual DSU-DP supports
DTE rates of 2.4, 4.8, 9.6, 19.2, and 38.4 (asynchronous
or synchronous), and 56 kbps (synchronous). An
additional DTE rate of 57.6 kbps is available in async
Chapter 1. Introduction
61200.128L1-1 Dual DSU-DP User Manual 3
Chapter 1. Introduction
4 Dual DSU-DP User Manual 61200.128L1-1
UNPACK AND INSPECT
Carefully inspect the option module or plug-on board for
any shipping damages. If damage is suspected, file a claim
immediately with the carrier and contact ADTRAN
Customer Service. If possible, keep the original shipping
container for use in shipping the Dual DSU-DP for repair
or for verification of damage during shipment.
Shipped by ADTRAN
Chapter 2. Installation
Chapter 2
Installation
The following items are included in the ADTRAN shipment:
• The Dual DSU-DP Option Module or Dual DSU-DP
Plug-On Board
• The user manual (to be inserted into the main TSU/HSU
user manual)
Adapter Cables
Two cables must be purchased separately from ADTRAN:
• PN 1200167L1 HD to V.35 (Winchester)
• PN 1200167L2 HD to RS-232 (DB25)
Provided by Customer
The customer must provide a cable for connection to the
DTE device.
61200.128L1-1 Dual DSU-DP User Manual 5
Chapter 2. Installation
INSTALLING THE OPTION MODULE
It is not necessary to turn off the power to the TSU/HSU
when installing the option module because it is hot
swappable. The plug-on board must be attached to a hot
swappable option module if you wish to install it while the
TSU/HSU is powered on.
Placement of the Option Module
Figure 2-1 is representative of the action required for
proper placement of the option module. Perform the
following steps to install the option module:
1. Remove the cover plate from the TSU/HSU unit rear
panel.
2. Slide the option module into the rear panel of the
TSU/HSU unit until it is positioned firmly against the
front of the unit.
3.. Fasten the thumbscrews at both edges of the option
module.
Cover Plate
TSU/HSU
UNIT
Option Module
Figure 2-1
Installing the Option Module
Power Connection
Each option module derives power from the base TSU/
HSU unit. Power to the TSU/HSU is supplied by a captive
eight-foot power cord.
6 Dual DSU-DP User Manual 61200.128L1-1
Attaching the Plug-On Board
Figure 2-2 is representative of the action required for
proper attachment of a plug-on board to the option
module. Perform the following steps to install the plugon board:
1. Hold the plug-on board above the option module.
2. Using a downward and right-to-left motion, slip the
plug-on board connector into the opening in the
option module back panel.
3. Moving the plug-on board downward, secure the
connection of the header pins at the front of the
boards.
4. Install two 4-40 screws at both front edges of the
option module.
5. Install two 4-40 screws on each of the standoffs on
the rear of the plug-on module.
Chapter 2. Installation
P
O
R
T
X
.
3
P
O
R
T
X
.4
D
U
A
L
D
S
U
-D
P
P
O
R
T
X
.
1
P
O
R
H
T
O
X
T
.
2
R
E
P
L
A
C
E
A
B
L
E
PORT X.3
Figure 2-2
Attaching the Plug-On Board
The connection of the header pins between the option module
and the plug-on board must be visually verified. Severe
damage of the equipment can result from an improper
connection.
61200.128L1-1 Dual DSU-DP User Manual 7
Chapter 2. Installation
REAR PANEL
The rear panel contains two high-density subminiature
DTE connectors which provide V.35 or EIA-232 interfaces via custom cables. Pin assignments for the DTE
connections are listed in the section DTE Data Connec-
tion in this chapter. The DSU-DP rear panel is shown in
Figure 2-3.
3
2
HOT
REPLACEABLE
PORT X.1
DUAL DSU-DP
PORT X.2
1 - Cutout for plug-on board interfaces
2 - Screw receptacles for plug-on board
3 - Plug-on board header
DSU-DP Option Module Rear View
2
PORT X.3
1
Figure 2-3
8 Dual DSU-DP User Manual 61200.128L1-1
DTE DATA CONNECTION
The DTE should be connected to either the EIA-232 DTE
cable or the CCITT V.35 DTE cable. The maximum cable
lengths recommended are 50 feet for the EIA-232, and
100 feet for the C C IT T V.35 (note: ADT RAN -adapter
cables are six feet in length). The pin assignments for the
cables are listed in Tables 2-A and 2-B.
The V.35 cable is recommended for use with data rates
above 19.2 kbps. The EIA-232 cable works up to 56 kbps
with a low capacitance cable or with the external transmit
clock option selected. The DT E rate may be configured
from the front panel or via the T-Watchª Management
Program. The DT E can operate in asynchronous or
synchronous modes.
To prevent possible radio frequency interference emissions, a
shielded cable is required.
Chapter 2. Installation
Table 2-A
Pin Assignments for Primary EI A-232 Cable
HD* Pin # Pin # EIA Description
1 1 AA Protective Ground (PG)
2 2 BA Transmit Data (TD)
3 3 BB Receive Data (RD)
4 4 CA Request to Send (RS)
5 5 CB Clear to Send (CS)
6 6 C C Data Set Ready (SR)
7 7 AB Signal Ground (SG)
8 8 CF Received Line Signal Detector (CD)
15 15 DB Transmit Clock (TC)
16 17 DD Receive Clock (RC)
18 18 - Local Loopback (LL)
20 2 0 C D Data Terminal Ready (TR)
17 2 2 CE Ring Indicator (RI)
14 24 DA External TX Clock (ETC)
19 25 - Test Indicator (TI)
* HD = High Density
61200.128L1-1 Dual DSU-DP User Manual 9
Chapter 2. Installation
Table 2-B
Pin Assignments for Primary V.35 Cable
HD P in # P i n CCITT
1 A 10 1 Protective Ground (PG)
7 B 102 Signal G round (SG)
4 C 105 Request to Send (RS)
5 D 106 Clear to Send (CS)
6 E 107 Data Set Ready (SR)
8 F 109 Received Line Signal Detector (CD)
20 H - Data Terminal Ready (TR)
17 J - R
18 L - L
11 R 104 Received Data (RD-A)
12 T 1 0 4 Received Data (RD-B)
24 V 115 Receiver Signal Element Timing (SCR-A)
25 X 115 Receiver Signal Element Timing (SCR-B)
9 P 1 03 Transmitted Data (SD-A)
10 S 1 03 Transmitted Data (SD-B)
22 Y 1 1 4 Transmitter Signal Element Timing (SCT-A)
23 AA 114 Transmitter Signal Element Timing (SCT-B)
13 U 1 1 3 External TX Signal Element (SCX-A)
26 W 113 External TX Signal Element (SCX-B)
19 K, NN - Test Indicator (TI)
ing Indicator (RI)
ocal Loopback (LL)
Description
10 Dual DSU-DP User Manual 61200.128 L1-1
CONFIGURATION
The Dual DSU-DP option module contains two different
user profiles (sets of configuration options) that are stored
in read only memory. T hese profiles are listed in the
appendix Default Configuration Profiles. The unit is
shipped from the factory with profile 1 ( default configuration) loaded into the nonvolatile configuration memory.
If profile 1 matches the desired system requirements, no
additional configuration is required to put the unit into
service. If profile 1 does not match the desired system
requirements, modify the default configuration or select
another profile more closely matching the desired con-
figuration and modify
When a new profile is loaded or the existing profile is
modified, it is stored in the nonvolatile configuration
memory. The Dual DSU-DP is then configured with that
profile every time power is turned on or reset.
Chapter 2. Installation
See the section Manual Command in the Configuration
chapter for information on loading default configuration
profiles.
61200.128L1-1 Dual DSU-DP User Manual 11
Chapter 2. Installation
Configuration Methods
The Dual DSU-DP provides methods for both local and
emote configuration. These methods are shown in Table
2-C and are discussed in the following sections.
METHOD STAND ALONE
AT Commands Yes Yes
V.25 Commands Yes Yes
Front Panel Yes Yes
r
DATAM ATE N o Yes
VT 100 No Yes
AT Commands
The Dual DSU-DP can be configured and controlled with
in-band AT commands from an asynchronous DT E port
just as modems are.
Table 2-C
Configuration Methods
Local Remote
To exit the data mode and enter the command mode, the
asynchronous DT E device must transmit a proper escape
sequence or three pluses (+++) to the Dual DSU-DP. A
specified time delay must occur between the last data
character and the first escape sequence character. T his is
the guard time delay, and it can be changed by writing a
value to the S12 register. The default value for the guard
time is one second. For a valid escape sequence to occur,
the DT E must transmit the escape code character three
times in succession with delay between each character
being less than the guard time.
Once the command mode is entered, AT commands can
be transmitted to the Dual DSU-DP to configure most of
the options or initiate tests to check both the Dual DSUDP and the network connections. All command lines
must begin with the AT character set in either capital or
lower case letters.
12 Dual DSU-DP User Manual 61200.128 L1-1
The command line may contain a single command or a
series of commands after the AT attention code. When a
series of commands is used, the individual commands
may be separated with spaces for readability. The maximum length for a command line is 40 characters. Each
command line is executed by the Dual DSU-DP upon
receipt of a terminating character. T he default terminating character is a carriage return ( ASCII 013), but it can
be changed by writing a different value to register S3.
Before the terminating character is transmitted, the
command line can be edited by using the backspace
character (ASC I I 008) to erase errors so the proper
commands can be entered. Valid AT commands for the
Dual DSU-DP are listed in the appendix AT Commands.
V.25 bis Commands
When configured for the V.25 bis option, the Dual DSUDP accepts in-band dialing and configuration commands
from both synchronous and asynchronous DT E ports.
Chapter 2. Installation
The V.25 bis option supports the following protocols:
¥ SDLC (Synchronous Data Link Control)
¥ BI-SYN C
¥ ASYNC HRONOUS
SDLC Option
Character Format
¥ Data bits - 8
¥ Parity bit - Ignored
Command Structure
[F][A][C][V.25 bis COMMAND][FCS][F]
The address field [ A] is FFH. The control field [ C ] is set
to 13H except for cases of multi-frame responses. For this
case, the control field is set to 03H in all but the last
frame. T he 03H in the control field indicates that other
frames are to follow while the 13H in the control field
indicates the final frame.
61200.128L1-1 Dual DSU-DP User Manual 13
Chapter 2. Installation
Bi-Sync Option
Asynchronous Option
Character Format
¥ Data bits - 7
¥ Parity bit - Odd
Command Structure
[SYN][SYN][STX][V.25 bis COMMAND][ETX]
Character Format
¥ Start bit - 1
¥ Data bits - 7
¥ Parity bit - Even
¥ Stop bit - 1
Command Structure
[V.25 bis COMMAND][CR][LF]
Command Descriptions
The ADTRAN V.25 bis command set is a subset of the
CCITT V.25 bis command set. In addition to the CCITT
commands supported, ADTRAN has added configuration
commands for both local and remote DSUs. The
14 Dual DSU-DP User Manual 61200.128 L1-1
Chapter 2. Installation
ADTRAN V.25 bis command set follows:
CI C Connect incoming call
CNL C onfiguration local
CNR C onfiguration remote
CRN C all request with number
CRS C all request using stored number
DI C Disregard incoming call
PRN Program number
RLN Request list of numbers
The following list contains possible responses to V.25 bis
commands:
V A L Valid V.25 command processed
CFIET Call failed on switched network - busy
detected
CFIDE Call failed on switched network - no wink
detected
CFINS C all failed - no dial string in specified
register
INVCU Unknown command detected
INVPS Invalid parameter syntax
INVPV Invalid parameter value
INVBL Invalid local password
INVBM Invalid remote password
INC Incoming call
CNX C all connected
If verbose (wordy) responses are disabled (ATV0), the
following list of three-character responses are the only
ones returned:
V A L Valid V.25 command processed
INV Invalid command received
CFI Call failed
INC Incoming call
CNX C all connected
61200.128L1-1 Dual DSU-DP User Manual 15
Chapter 2. Installation
Syntax and Possible Responses
CIC (Connect Incoming Call)
This command causes the DSU to go on-line. For dial
backup units, this command hangs up the dial backup
line and initiates an attempt to reestablish the main ( DDS)
line. There are no parameters associated with this
command. Possible indications include VAL, CNX, and
CFIxx
CNL (Configuration Local)
This command is used to pass AT commands to the local
modem via the V.25 bis command processor. T his allows
the Dual DSU-DP to be configured with AT commands via
a synchronous interface. T he command has the following
format:
CNL[LOCAL PASSWORD;]AT[ONE OR MORE AT
COMMANDS]
A local password may not be required depending on the
present configuration of the unit. Responses to CNL
commands are returned in the data format currently
configured. Possible responses include VAL and I NVn.
CNR (Configuration Remote)
This command is used to pass AT commands over the
network to the remote DSU via the V.25 bis command
processor. T his allows a remote Dual DSU-DP to be
configured from a synchronous interface. The commandÕs
format is as follows:
CNR[REMOTE PASSWORD;]AT[ONE OR MORE AT
COMMANDS]
The remote password may or may not be required depending on the present configuration of the remote unit.
Responses to the CNR commands are returned in the data
format currently configured. Possible responses include
VAL and I NVn.
16 Dual DSU-DP User Manual 61200.128 L1-1
Switched 56 Operation
CRN (Call Request with Number)
When the Dual DSU-DP is configured for SW 56 operation, the CRN command causes the DSU to dial the
supplied number. T he commandÕs format follows:
CRN[NUMBER TO BE DIALED]
If no number is included in the command, the number
stored in dial register number 1 is dialed. If no number is
provided and no number is stored in dial register number
1, the Dual DSU-DP responds with the call failure indication C FINS ( C all Failure Indication Not Stored).
For a DBU unit, this command initiates dialing on the
backup circuit. I f the number supplied contains nondialable digits, they are ignored and only the dialable
digits are dialed. Possible responses include VAL, CNX,
and CFIxx.
CRS (Call Request Using Stored Number)
The CRS command causes the Dual DSU-DP to dial the
number stored in the specified register. The format of this
command is as follows:
Chapter 2. Installation
CRS[OPTIONAL SPACE][REGISTER NUMBER 110]
If this command is issued without the register number
parameter, the INVPS ( Invalid Parameter Syntax) response is issued. If this command is issued and the
register parameter is not in the valid range for dialing
registers, the INVPV ( Invalid Parameter Value) response is
returned. Other responses include VAL, CNX, and C FIxx.
61200.128L1-1 Dual DSU-DP User Manual 17
Chapter 2. Installation
DIC (Disregard Incoming Call)
This command causes the V.25 bis processor to return to
command mode even if there is an incoming call pending.
This allows local commands to be issued and incoming
calls to be ignored. There are no parameters associated
with this command. The DSU responds with VAL.
PRN (Program Number)
This command stores the supplied number into the
specified register. The command has the following
format:
PRN REGISTER NUMBER;[NUMBER TO BE
STORED]
If this command is entered with no parameters, the INVPS
response is returned. If no register number is included in
the command or if it is invalid, the INVPV response is
returned. This response is also returned if the number to
be stored contains invalid characters. T he characters 1, 2,
3, 4, 5, 6, 7, 8, 9, 0, P, T, and & are valid dial characters.
If no digits are issued with this command, the specified
register is cleared. T he DSU responds with VAL.
RLN (Request List of Numbers)
This command causes the Dual DSU-DP to return the
number stored in the specified register. The format of this
command follows:
RLN [REGISTER NUMBER]
If the register number is invalid, the INV PV response is
returned. When a correct register number is entered, the
following response is returned:
LSN [REGISTER NUMBER];[NUMBER STORED]VAL
If no register number is present in the command, the Dual
DSU-DP responds with a list of all the registers and the
stored numbers. T his list is followed by the VAL
response.
18 Dual DSU-DP User Manual 61200.128 L1-1
OVERVIEW
Menu Structure
Chapter 3. Operation
Chapter 3
Operation
The Dual DSU-DP Option Module and Plug-On Board
are both controlled as part of the TSU/HSU using the
methods described in their respective manuals.
Refer to the appropriate TSU/HSU User Manual for
descriptions of front panel indicators and buttons.
The TSU 100 menu tree is used for illustrative purposes.
When an option module or plug-on board is installed in
the TSU/HSU, the unit adds it to the list of available
options under the various Port menu items. These menu
items are printed in bold italic letters in the limited
overview of the TSU 100 menu shown in Figure 3-1
(complete menu diagram is found in each TSU/HSU
User Manual). The TSU 100 is used as an example of
the TSU/HSU units.
61200.128L1-1 Dual DSU-DP User Manual 19
Chapter 3. Operation
TSU 100
MAIN MENU
1)STATUS
2)CONFIG
3)UTIL
4)TEST
1)NETWORK (NI)
2)UNIT
3)MAP XCHNG
4)MAP IN USE A (B)
5)DS0 MAP A
6)DS0 MAP B
7)PORT CONFIG
1)NETWORK TESTS
2)RUN SELF TEST
3)PORT TEST
4)CANCEL TEST
1)NI PERF REPORTS
2)NI ERRORS
3)ACTIVE ALARMS
4)VIEW HISTORY
5)PORT STATUS
1)TIME/DATE
2)FACTORY RESTORE
3)SET PASSCODE
4)UNIT ID
5)SOFTWARE REV
6)PORT UTILITY
Figure 3-1
TSU 100 Main Menu
The Dual DSU-DP menus are all submenus found under
TSU/HSU menu items:
1)STATUS -> 5)PORT STATUS
2)CONFIG -> 7)PORT CONFIG
3)UTIL -> 6)PORT UTIL
4)TEST -> 3)PORT TEST
When accessing PORT, CONFIG, or TEST submenus, the
DSU-DP port must be selected, then remote or local must be
selected.
20 Dual DSU-DP User Manual 61200.128L1-1
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