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Manuals
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Telebit Manuals
Modem
T2500
Reference manual
Telebit T2500 Reference Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Error Control
Chapter 1 Introduction
Chapter 2 Installation
Equipment Checklist
Installation Checklist
Connecting the AC Power Cord
T2500 Cable Connections
Connecting the RS-232C Cable
Connecting the Telephone Line
Connecting a Telephone
After Completing the Installation
Chapter 3 Using the Modem
Memory Organization
T2500 Memory Organization
Default Configuration Selection
Default Set Display
Front Panel Control Switches
Front Panel Status Indicators
Selecting Conventional or Enhanced Command Mode3-8
Enhanced Command Mode
Conventional Command Mode
SDLC Configuration Procedure
Command Mode Operation
Result Codes
Using the Dial Command
Using the Auto Answer Feature
Changing from Voice to Data Connection
Chapter 4 Conventional Command Mode
Configuration Guidelines
Attended or Unattended Mode
Transmission Mode Considerations
Serial Port Interface Speed and Flow Control
Serial Port Interface Speed
Serial Port Flow Control
RS-232 Control Signal Interpretations
DTR Signal Interpretation
Rts/Cfs Signal Handling
DSR Signal Handling
File Transfer Protocol Support
Mnpsupport
Command Descriptions
A Answer
D(N) Dial
E(N) Echo ON/OFF
F(N) Echoplex ON/OFF
H(N) Hook ON/OFF
I(N) Information
L(N) Speaker Volume
M(N) Speaker ON/OFF
N(N) Transmission Speed Negotiation
O(N) On-Line
Q(N) Quiet Enable
S(N)=(X) Set Register
S(N)? Read Register
N) Verbose ON/OFF
N) Result Code and Dialing Capabilities
Error Control
Y(N) Disconnect on Break
N Is Either 0 or 1
Default Is 0
C(N) Data Carrier Detect Control
W same as wo
F Recall Factory Configuration Parameters
G(N) Guard Tone Selection
J(N) Jack Type Selection
K(N) Flow Control
L(N) Line Type Selection
M(N) Communication Mode Selection
&Q{N) Communication Mode Selection
R(N) Rts/Cfs Signal Interpretation
S(N) Data Set Ready Interpretation
T(N) Test Function
View Active Configuration and User Profiles
&W{N) Write Configuration Parameters
Transmit Clock Source
Y(N) Default User Profile Selection
Z(N)=(X) Set Number Directory
N Is
Default Is
Same as XO
Register Descriptions
Count of Rings
S3 Carriage Return Character
Line Feed Character
Backspace Character
Wait Time before Dialing
Wait for Carrierldial Tone Time
Pause Time for Comma
Carrier Detect Time
Rev.D
S10 Carrier Loss to Disconnect Time
S11 Touch Tone Timing
S12 Escape Sequence Guard Time
S18 Test Termination Timer
S25 DTR Delay Timing
S26 RTS to CTS Delay Interval
S36 Negotiation Failure Treatment
S37 Transmission Mode
S38 Delay before Disconnecting
Chapter 5 Enhanced Command Mode
Configuration Guidelines
Attended or Unattended Mode
Attended Mode Configuration
Transmission Mode Considerations
V.42 and MNP Error Control Protocol Support
Data Compression
MNP Data Compression
V.42Bis LAP-M Data Compression
PEP Data Compression
Serial Port Interface Speed and Flow Control
Serial Port Interface Speed
Serial Port Flow Control
Control Signal Interpretations
DTR Signal Interpretations
DSR Signal Handling
DCD Signal Handling
Crs Signal Handling
Break Signal and Escape Sequence Handling
File Transfer Protocols Support
Transparent Synchronous Support
Command Descriptions
A Answer
E(N) Echo ON/OFF
G Gotovoice
H(N) Hook ON/OFF
M(N) Speaker ON/OFF
N(N)=(X) Set Number Directory
N(N)? Display Number
N? Display Number Directory and S Registers
On-Line
Q(N) Quiet Enable
S(N)=(X) Set Register
U Update System Password
N) Verbose ON/OFF
N) Result Code Basiclextended
B Blind Command
E(N) Recall EEPROM Operating Parameters
F(N) Recall Factory Configuration Parameters
N(N) Display EEPROM Operating Parameters
P(N) Pulse Dialing Makelbreak Ratio
R(N) Force Retrain or Renegotiate
T(N) Test Function
W(N) Write Configuration Parameters
Remote Modem Access
Register Descriptions
SO Answer on Ring Number
Escape Character
Carriage Return Character
Line Feed Character
Backspace Character
S6 Dial Tone Wait Time
Wait for Carrier Time
S8 Pause Time for Comma
S9 Carrier Detect Time
Carrier Loss to Disconnect Time
S11 Touch Tone Timing
S12 Escape Sequence Guard Time
S18 Test Termination Timer
DTR Delay Timing
S26 RTS to CTS Delay Interval
S38 Delay before Disconnecting
S41 Inactivity Timer
Remote Access Enable
Callback Security
S47 Dsrldcd Delay Time
S49
S50 Transmission Mode
S51 Interface Speed
S52 DTR Interpretation
S54 Break Signal Interpretation
S55
S56 XON Character
XOFF Character
Flow Control Used Bydte
S59 Prompt Character
S61 Speakervolume
S62 Break Length Time
S63 Command Mode Selection
S64 Dial/Answer Sequence Abort
S65 XON/XOFF Failsafe
S66 Lock Interface Speed
Flow Control Used by DCE
XON Signal Handling
Instantaneous Transmit Rate
Transmit Bits Per Channel
Instantaneous Receive Rate
Receive Bits Per Channel
S74 Received Packets Retransmitted
S75 Packets Accepted
S76 Equivalent Line Noise Profile
S77 Frequency Offset
S78 Line Quality
S91 Guard Tone Selection
S92 Answering Sequence Selection
AC Transmit Duration
S95 MNP Operating Mode
MNP Data Compression Enable
S97 V.42 LAP-M Enable
S98 V.42Bis Data Compression
Answer in Originate Mode
Continuous Answer/Originate
Auxiliary Telco Lead Setting
Automatic Dialing Options
TID Switch Enable
Detection Enable
S107 Detection Timer
S108 V.42 Match Count
File Transfer Protocol Support
Kermit Mark Character
S121 Echo Suppressor Compensation
S130 Data Set Ready Interpretation
S131 Data Carrier Detected Interpretation
Transparent Synchronous Cross Reference
S152 SDLC Switchedlnonswitched
S153 SDLC Fulvhalf Duplex Mode Selection
S155 NRZ/NRZI Data Encoding
SDLC Disconnection Delay Time
SDLC DSR Delay Time
S169 Synchronous Dialing Command Set Enable
Default User Profile Selection
Chapter 6 Diagnostics and Service
Diagnostic Tests
User Assurance Tests
Nonvolatile Memory Test
Telephone Dialer Test
Telephone Line Relay Test
Ring Detect Test
Troubleshooting
Modem Preconfiguration
Placing a Call
Answering a Call
Call in Progress
Chapter 7 Technical Support Procedures
Return for Repair Procedure
Two Year Limited Warranty
Two Year Limited Warranty Extension
Appendix Aascii Code Chart
Appendix B Interface Description
Phone Line Connector Pin Definition
Asynchronous RS-232C Cable Diagram
Special Asynchronous RS-232C Cable Diagram
Appendixc Command Cross-Reference
Appendix Ccommand Cross Reference
Appendixd Result Codes
Conventional Command Mode Result Codes
Error Control Call Progress Result Codes
Enhanced Command Mode Result Codes
MNP Extended Result Codes
PEP Extended Result Codes
Appendix E T2500 to T2500 Interconnection
Appendix F Leased Line Considerations
Appendix G Technical Specifications
Glossary
Index
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