Teltone T-311, T-311-B-01, T-311-C-01 Product Manual
Telephone Access Unit
T-311
Product Manual
40-400-00045, Rev. B
Note
This manual covers Models T-311-B-01 and T-311-C-01.
Copyright Notice
Copyright © 1992 - 2004 Teltone Corporation
All Rights Reserved
Trademarks
Teltone is a registered trademark of Teltone Corporation.
Windows is a registered trademark of Microsoft Corporation.
Other company and product names may be trademarks or
registered trademarks of their respective owners.
Teltone Corporation
Bothell, Washington, USA
Customer Service: 425-951-3388
Technical Support: 425-951-3390
Fax: 425-487-2288
Email: info@teltone.com
Website: www.teltone.com
40-400-00045, Rev. B
Reference Manual Contents
Contents
Compliance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Important Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Recording of Two-way Telephone Conversations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Chapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 1 T-311 Telephone Access Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Telephone Line Control Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Communication Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Outgoing Call Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Call Answering Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2 Typical Setup for Outgoing Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Chapter 2: Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Ready Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Active Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 1 LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Chapter 3: Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installation
Figure 3 System Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 2 T-311 RS-232-C Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 4 Remote Connector Cable and Pin Functions . . . . . . . . . . . . . . . . . . . 11
Figure 5 Universal Mounting Bracket (Optional). . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 6 Universal Mounting Shelf (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Chapter 4: Dialing Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
How to Dial. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Sending DTMF Digits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Chapter 5: Answering Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Ringing Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Auto Answer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Security Checking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Transferring Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Chapter 6: Calling the T-311 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 3 Audible Prompts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Chapter 7: Record & Play Back Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Connecting the T-311 to the Recording Device . . . . . . . . . . . . . . . . . . . . . . . . . 19
Recording from the Line. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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T-311
Playing Back to the Line. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Chapter 8: Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Command Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 4 Command Set (Sheet 1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 4 Command Set (Sheet 2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Command Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Digits/Characters for dialing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Modifiers (arguments). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
V Verbose Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
X Call Progress Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Detector toggles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
S Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 5 S Register Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Chapter 9: Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Message Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Table 6 T-311 Response Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Chapter 10: Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Command Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Saving a Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
S Register Queries and Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 7 Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Table 8 Default Configuration (by Parameter). . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Table 9 Default Configuration (by Code). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
RS-232-C Communications Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 10 DTMF/ASCII/DTMF Translation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Appendix A: Service Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Return for Repair Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Appendix B: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 7 T-311 Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Appendix C: Reading and Writing to Bit-Mapped S Registers. . . . . . . . . . . . . . . . . . . 51
Appendix D: ASCII Characters & DTMF Frequencies. . . . . . . . . . . . . . . . . . . . . . . . . 52
Table 11 T-311 ASCII Character Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Table 12 DTMF Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Appendix E: Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
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Reference Manual Contents
U.S. Regulatory Compliance
FCC Part 68 Notice: To comply with FCC Part 68 regulations, the following requirements must be met:
1. If the telephone company requests information on the equipment connected to their lines, please tell them:
a. the telephone number the equipment is connected to;
b. this equipment operates on standard RJ11 phone jacks;
c. the FCC registration number;
d. the ringer equivalence number (REN). The REN shows how many devices, such as phones, modems, etc. can be
connected to your line. In most areas, there cannot be more than five devices (i.e., a REN of five) on a phone line.
If the REN is exceeded, then your phone may not ring properly.
NOTE: Items C and D above are found on the label on any Teltone equipment connected to your telephone line.
2. These devices must not be installed on coin-operated telephone lines or party lines.
3. Repair work on this device must be done by Teltone Corporation.
4. If any trouble is experienced with this equipment, the telephone company may request that the customer disconnect
the registered equipment from the telephone line to determine if the registered equipment is malfunctioning and if the
registered equipment is malfunctioning, the use of such equipment shall be discontinued until the problem has been
corrected.
FCC Part 15 Class A Notice: 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 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.
Canadian Regulatory Compliance
Notice: This equipment meets the applicable Industry Canada Terminal Equipment Technical Specifications. This is
confirmed by the registration number. The Industry Canada label or the abbreviation, IC, before the registration number
signifies that registration was performed based on a Declaration of Conformity indicating that Industry Canada technical
specifications were met. It does not imply that Industry Canada approved the equipment. Industry Canada does not
guarantee the equipment will operate to the user's satisfaction. Before installing this equipment, users should ensure that
it is permissible to connect it to the facilities of the local telecommunications company. The equipment must also be
installed using an acceptable method of connection. In some cases, the company’s inside wiring associated with a single
line individual service may be extended by means of a certified connector assembly (telephone extension cord). The
customer should be aware that compliance with the above conditions may not prevent degradation of service in some
situations.
Repairs to certified equipment should be made by Teltone Corporation. Any repairs or alterations made by the user to this
equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to
disconnect the equipment. Users should ensure for their own protection that the electrical ground connections of the
power utility, telephone lines, and internal metallic water pipe system, if present, are connected together. This precaution
may be particularly important in rural areas.
Caution: Users should not attempt to make such connections themselves, but should contact the appropriate electric
inspection authority, or electrician, as appropriate. The Ringer Equivalence Number (REN) assigned to each terminal
device provides an indication of the maximum number of terminal devices to be connected to a telephone interface
without overloading the interface. The termination on an interface may consist of any combination of devices subject only
to the requirement that the sum of the REN of all devices does not exceed five (5) in most, but not all cases. Check with
your local exchange carrier for the REN limit in your service area. The REN assigned to each device is located on the
equipment label.
COMPLIANCE NOTICE: This digital apparatus does not exceed the Class A limits for Radio Noise Emissions set out in
the equipment standard ICES-003 for digital apparatus.
AVIS DE CONFORMATION: Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectriques édicté
par le ministère des Communications du Canada.
40-400-00045, Rev. B Page iii
T-311
IMPORTANT SAFETY INSTRUCTIONS
When using this product, basic safety precautions, including the following, should always be followed to reduce
the risk of fire, electric shock, and injury to persons.
1. Read and understand all instructions.
2. Follow all warnings and instructions marked on the product.
3. The product should be operated only from the type of power source indicated on the marking label. If you
are not sure of the type of power supply, consult your dealer or local power company. The product is
designed for indoor use only.
4. To reduce the risk of electric shock, do not disassemble the product, but take it to qualified service
personnel when service or repair work is required. Opening or removing covers may expose you to
dangerous voltages or other risks. Incorrect reassembly can cause electric shock when the appliance is
subsequently used.
5. If the product does not operate normally by following the operating instructions, or if the product has been
dropped or the cabinet has been damaged, or if the product exhibits a distinct change in performance, refer
servicing to qualified service personnel.
6. If the product is used in a manner other than specified in this manual, the protection provided by the product
may be impaired.
7. For the purpose of removing power from the product, the power input connector is the main power
disconnect point. Pull the power cord away from the connector to ensure power disconnect.
8. Adequate air flow must be maintained in order for the product to operate correctly. Do not wrap the product
in blankets, paper, or other material that may impede ventilation.
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Reference Manual Contents
Recording of Two-way Telephone Conversations
This product may be used to record telephone conversations.Use in this application is subject to reg
ulations adopted by the Federal Communications Commission, and is additionally subject to local
state tariffs. Check with your local service provider to verify if any special regulations apply.
To comply with FCC regulations, this product is equipped so that it can be connected or disconnected
at the will of the customer.In addition, one of the following conditions must apply:
All parties to the telephone conversation must give their consent to the recording of the conversation,
and the prior consent must be obtained in writing or be part of, and obtained at the start of, the re
cording, or
All parties to the telephone conversation must be verbally notified at the beginning of the conversation
and the notification must be recorded as part of the call, by the recording party, or
A distinctive recorder tone, repeated at intervals of approximately fifteen seconds, is required to alert
all parties when the recording equipment is in use. The distinctive recording tone can be provided as
part of (1) the recording equipment, or (2) registered or grandfathered protective circuitry.
Note:
Recorder tone is not supplied by the T-311.
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-
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T-311
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Page vi
Reference Manual Chapter 1: Introduction
Chapter 1: Introduction
With the Teltone T-311 Telephone Access Unit computers can make and answer telephone calls, and
information about those calls can be returned to the computer.While a modem only transmits data
from computer to computer over telephone lines, the T-311 allows communication between called and
calling parties.
This communication is made possible by the conversion of DTMF-to-ASCII and ASCII-to-DTMF.With
the T-311, computers and other terminal devices can control telephone system functions such as an
swering and placing calls, observing call status, sending or receiving DTMF signals, “flashing”the
line, and coupling audio sources, like speech synthesizers, onto the line.
For compatibility with communications software, the T-311 uses the industry-standard AT command
set. It responds to commands and call processing events by sending messages to the computer.
-
When used in conjunction with contact management software, the T-311 is a powerful automatic di
aler.Working with the records from the software database, it speeds call completion by detecting
busy/reorder tone and immediately moving to the next number.The result is increased “talk time”,
thereby improving the efficiency of calling agents.
-
Using This Manual
This manual is intended to assist developers with tailoring the T-311 to work with a software program.
Some of the steps in the manual are not required for every application and are marked: (Optional).
Complete the optional steps if needed for your application.
Manual Revisions
The information in this manual addresses T-311-B-01 units produced after October 3, 1994 . The production date is stamped on the bottom of each T-311 unit. All information related to Caller ID and
Visual Message Waiting are features of the T-311-B-01 ONLY.The T-311-C-01 replaces the
T-311-A-01 and is functionally the same.
40-400-00045, Rev. B Page1
T-311
Page 2
Figure 1 T-311 Telephone Access Unit
Reference Manual Chapter 1: Introduction
Telephone Line Control Features
Off-hook
The T-311 takes the line off-hook (“seizes” the line) when commanded by the computer to make or an
swer a call.The T-311 uses the standard ATD command to dial outgoing calls, but unlike most
modems it provides full call progress monitoring.
On-hook
The T-311 places the line on-hook (disconnects) upon command from the computer, or automatically
if a caller fails the security check, loop current is lost, or inactivity timeout occurs.
Ringing
The T-311 detects ringing on its incoming line. If response messages are enabled, the T-311 sends a
RING message to the computer.The call is automatically answered if Autoanswer is enabled.
Hold
The T-311 puts calls on hold and removes the hold when commanded by the computer.
Communication Features
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DTMF/ASCII Conversion
After a telephone connection has been established, ASCII characters from the computer are converted to DTMF tones and forwarded to the network.In the opposite direction, DTMF digits entered at
a telephone keypad are converted to ASCII characters and forwarded to the computer.
FSKDecoding (Caller ID andVMWI) -- Only Applies to M-311-B-01 Units
The central office (telephone company) sends the FSK signals (Caller ID), after the first ring and before the second ring.Caller ID information, in single message format and multiple message format,
are decoded and converted to ASCII characters to be transmitted via the RS232C port. Visual
Message Waiting Indication signals are sent during on-hook idle times.These FSK messages are decoded and sent out via RS232C along with a visual indication on the front panel of the T-311, to
inform the user of messages waiting in their mailbox.
Electronic Voice
By controlling an audio source such as a recorded tape player or speech synthesizer, the computer
can use the T-311 to send messages to the called party, or record messages received over the phone
line.
Headset Interface
When used with a headset, the T-311 becomes a powerful and efficient “computerized telephone” for
telemarketing and similar applications, relieving the user of most of the mechanics of setting up, dial
ing, and disconnecting calls.
-
The headset should meet the following requirements:
•
UL and CSA approval
•
Electret-type microphone (typically battery or AC powered)
•
external amplifier with volume control
•
modular four-wire connector (plugs into front of T-311).
Note:
40-400-00045, Rev. B Page3
Headsets with telephone-like features duplicate some of the functions of the T-311 and may
require additional programming.
T-311
Telephone Interface
A telephone connected to the T-311 can be used two ways:(1) as an auxiliary telephone sharing the
line with the T-311 (outgoing calls are dialed from the telephone set directly over the telephone and do
not go through the T-311 circuitry), or (2) operating through the T-311 (outgoing calls are dialed from
the computer). The second mode is identical to operation with a headset.
Standard Commands
The industry-standard AT command set is used where applicable.
Selectable Baud Rates
You can select a baud rate from 300 to 9600 bps to set the speed with which ASCII data is transferred
between the computer and T-311. It does not refer to the rate of data transmittal across the telephone
lines.See Chapter 10, “RS-232-C Communications Link” on page 43 for details.
Outgoing Call Features
Autodialing
The T-311 can autodial a series of programmed numbers.It can also permanently store a number
string for repeated dialing with the command “ATDS”. (See page 26 for more detail.)
Tone and Pulse Dialing
To ensure the widest possible range of applications, the T-311 works with both DTMF and rotary signaling.
Dial Tone Detection
The T-311 can detect both primary and secondary dial tones.In the autodialing mode, the T-311 can
be programmed to delay dialing until it detects secondary dial tone.
Call Progress
By detecting and analyzing standard call progress tones (e.g., reorder, busy, and audible ringing
/“ringback”), the T-311 is able to return information to the computer about the status of originated
calls.By detecting Special Information Tones (S.I.T.), the T-311 recognizes incomplete calls to speed
placement of the next call.
Call Answering Features
Auto and Forced Answer
Auto answer allows unsupervised operation of the T-311; forced answer commands the T-311 to an
swer the call.By disabling answer altogether, the T-311 owner can ensure that the telephone line is
used for making outgoing calls only.
Security Checking on Incoming Calls
When security is enabled, the T-311 automatically disconnects callers who fail to enter the correct
password in the allotted time.
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LED Indicators
The T-311 includes five LEDs.Operation of the LEDs is described in Table 1.
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Reference Manual Chapter 1: Introduction
Modular Connectors
For ease of installation and to promote the widest possible range of applications, all T-311 connectors
are standard and modular.
Nonvolatile Memory
The T-311 uses EEPROM memory to store configuration data.
Applications
The T-311 is a device marketed and intended for use in commercial, industrial, and business environ
ments.
Applications for the T-311 fall into three basic categories:(1) Outgoing calls, (2) Incoming calls, and
(3) Security for incoming calls.
T-311
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Outgoing Calls
This is the most sophisticated application for the T-311, particularly when incorporation of the proper
applications software and an audio source allow the T-311 to operate without human supervision. Fig
ure 2 shows an equipment configuration for outgoing call applications.Examples include:
(1) Telemarketing
(2) Autodialing with software, autodialing from a list of numbers
(3) Automatic remote monitoring of equipment
(4) Automatic outbound messaging
(5) Customer service surveys
(6) Appointment verification
(7) Collections on receivables
(8) Purchasing applications to solicit multiple bids.
40-400-00045, Rev. B Page5
Figure 2 Typical Setup for Outgoing Calls
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T-311
Incoming Calls
In this type of application, the caller uses the T-311 to update or verify information in a remote com
puter database.Examples include:
(1) Message forwarding systems
(2) Financial transaction systems
(3) Alarm systems
(4) Energy management systems
(5) Credit card verification systems
(6) Mail order systems.
(7) Smal Business
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Inward Security
The T-311’s security checking feature can be used for incoming call applications like Dialback security
systems or Building security systems.
Page 6
Reference Manual Chapter 2: Operating Modes
Chapter 2: Operating Modes
Ready Mode
The T-311 enters the ready mode when: power is applied, a reset is performed using the Z command,
or the DTR signal from the computer is reasserted (if that option is enabled with the &D2 command).
In this mode, the T-311 is disconnected from the telephone line.While in the ready mode, the T-311
monitors the line for ringing voltage, which announces an incoming call, FSK transmissions (Caller ID)
information and for loop current, which reveals the switchhook status of the auxiliary telephone.The
T-311 also monitors the computer for changes in DTR and the command “AT”. Commands are pro
cessed and messages returned to the computer.
Active Mode
The T-311 enters the active mode when the line is seized.The T-311 returns to the ready mode if:dial
tone is not found when making a call, a no-answer is detected, or the caller fails the security check.
Otherwise, the T-311 remains in the active mode until:loop current is lost, the line is disconnected by
the H command, or no-activity timeout occurs.In the active mode, the T-311 processes commands,
converts DTMF to ASCII and vice versa, couples audio input onto the line, monitors for loop current,
and maintains the no-activity timer.
Active Mode Response to COD
The T-311 responds to cut-off on disconnect (COD or forced disconnect) by going on-hook.You can
disable COD with the S*2 register on page 36.
-
LED Indicators
Table 1 LED Indicators
Indicator Color State Description
Power ON Green ON Power is applied to the T-311
Line Status
Red
Receive Data Red ON Data is being received by the computer
Transmit Data Red ON Data is being sent by the computer
Data Terminal
Ready (DTR)
Red ON
Note 1: Visual Message Waiting transmission has been received.
ON
(steady)
Slow flash On/Off, Call on hold
Fast flash Rapid blinking on Incoming call (ringing)
OFF Idle
Flash Two blinks on, 2 seconds off (repeated) VMW (note 1)
Line off-hook
computer is ready to receive data, or DTR is ignored by the
computer (see “Response to DTR” command, page 34).
40-400-00045, Rev. B Page7
T-311
Chapter 3: Installation
CAUTION:
(1) Never install telephone wiring during a lightning storm.
(2) Never install telephone jacks in wet locations unless the jack is specifically designed for wet
locations.
(3) Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
(4) Use caution when installing or modifying telephone lines.
This chapter provides a list of required accessories and information about installing the T-311. Infor
mation about compliance with FCC and DOC requirements and T-311 regulatory is listed at the front
of the manual.
-
Accessories
As shown in Figure 3, the T-311 must be connected to a telephone line, a computer, and a standard
120-volt AC outlet to a power transformer.
Connections to an auxiliary telephone, headset, and audio source are optional. Accessories required
to make these connections include:
(1) A plug-in transformer (Included with unit, P/N 610-00066-01.)
(2) A standard 6-position modular telephone cord. (Available as an ordering option, see page 46.)
(3) A cable to connect the T-311’s DCE interface to the RS-232-C port of the computer. The cable
should terminate on its T-311 end in a male DB-9 connector and supply the signals listed in Table 2.
(A DB-9 to -25 adapter cable, P/N 742-00017-01, is available as an ordering option.)
(4) Remote cable (Optional): If an audio source and/or remote control switch is used, a cable is
required to connect them to the T-311. (Not supplied.) The cable should terminate on its T-311 end in
a 1/2-inch diameter 5-pin DIN connector with pins at 180 degrees to the key and 3 plugs at the other
end (typical of small portable tape recorder cables). The cable connections and pin functions for the
remote interface are given in Figure 4.
(5) Wall Mounting Bracket (Optional): For wall mounting up to four T-311 units, UM-111-401 bracket
(see Figure 5) is available as an ordering option. For wall mounting up to eight units, UM-113-801
(Figure 6) is available as an ordering option.
Installation
Step 1: Connect Telephone Line
•
Plug one end of the modular telephone line connecting cable into the jack labeled “Line” on the
back of the T-311.
•
Plug the other end of the cable into the telephone line wall jack.
Page 8
Reference Manual Chapter 4: Dialing Instructions
40-400-00045, Rev. B Page 9
Figure 3 System Connections
T-311
Table 2 T-311 RS-232-C Interface
Pin number Description Source
1
2
3
4
5
6
7
8
9
Data carrier detect ()
Receive data ()
Transmit Data (TX)
Data terminal ready ()
Signal Ground (SG)
Data set ready ()
Request to send (RTS)
Clear to send ()
Ring indicator (RI)
T-311
T-311
Computer
Computer
Computer
T-311
Computer
T-311
T-311
Step 2: Connect Computer
Refer to the table above to check the RS-232-C interface.
•
Plug the male DB-9 connector end of the RS-232-C cable into the T-311 jack labeled “RS-232-C”.
•
Plug the other end of the cable into the RS-232-C connector on the computer.
•
Step 3: (Optional) Connect Telephone
• Connect the telephone to the T-311 jack labeled “Telephone Set” using the modular cord supplied
with your telephone set.
Step 4: (Optional) Connect Headset
• Connect the headset to the T-311 front panel jack labeled “Headset”.
Step 5: (Optional) Connect Remote Equipment
• The T-311 jack labeled “Remote” may be used to monitor or record information from the telephone
line. It may also be used to play back to the telephone line the output from a recorder or some
other audio source. This interface uses a 5-pin DIN connector with the pin assignments identified
in Figure 4. (See Chapter 7 for more information.)
Step 6: Enable Computer/T-311 Communications
•
Configure the computer to communicate at 1200 baud, using a ten-bit word: one start bit, eight
data bits, parity off, and one stop bit.
•
Enable the communication software which allows the computer to communicate via its RS-232-C
port.
Step 7: Connect Power Transformer
•
Plug the cable end of the power transformer into the T-311 connector labeled “Power”.
•
Plug the transformer end into a 120-volt AC power outlet.
•
Watch for the green POWER LED on the T-311 front panel to light. The red LED will also turn on
if either (1) the computer is on, or (2) the T-311 is configured to ignore DTR (“&D” command, see
Chapter 8).
•
Watch for a message like the following: "T311 TAU 2.00 COPYRIGHT 1991-94 TELTONE CORP.”
Step 8: Verify Configuration
•
From the communication software, send an AT command to the T-311.
Page 10
Reference Manual Index
INPUT
REMOTE
POWER
PACK
12 VAC 50/60 HZ
1/2 AMP
!
Pin No. Function
1 and 3
2
4
5
Isolated, low-voltage switch turns recoder on/off. Use with recorder’s
"Remote" input. It must not be used to switch AC power for the recorder
or other device.
Common ground for audio input and output signals.
Audio signal from recorder to phone line.
Audio signal to recorder from phone line.
Figure 4 Remote Connector Cable and Pin Functions
• If everything is configured correctly, the T-311 will respond with “OK”.
-or-
• If “OK” was not returned, the default configuration of the T-311 may not be compatible with your
setup. See Chapter 10.
Step 9: (optional) Change defaults
• If any factory default options require changing, configure the T-311 as described in Chapter 10.
Step 10: (optional) Mount the T-311
If you have ordered the mounting bracket (model UM-111-401), install the T-311 as follows.
•
Use the three screws to install the bracket to a 3/4-inch-thick wood panel that is attached to a wall.
•
If you are installing multiple units, insert the first T-311 in the slot closest to the wall. (The bottom
of each unit should face the wall.)
-or-
If you have ordered the mounting bracket (UM-113-801), install the T-311 as instructed in the steps
below.Please note that there is space for eight transformers; six in the back of the shelf and two in the
front. The shelf includes an eight outlet power strip with a 14-foot cord.
•
When you remove the shelf from the box, rotate the fasteners on the front and remove the cover.
Untie the power cord and run it through the slots at the back of the shelf.
•
Insert the units in the shelf so that you can see the LEDs through the front of the shelf. (The space
at the back of the shelf provides room to attach cabling to each device.)
•
Using the mounting hardware supplied with the carrier, install it in center or front mount positions
in a 19- or 23-inch rack.
40-400-00045, Rev. B Page11
T-311
Figure 5 Universal Mounting Bracket (Optional)
Figure 6 Universal Mounting Shelf (Optional)
Page 12
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