Codex 3265 User manual

Contents

326X Series Modem Reference Guide

Chapter 1. AT Commands

AT, AT& and AT

Command Descriptions ................................................. 1-5

Selecting Options and Settings ................................................................. 1-8

ATD (Dialing an Unstored Telephone Number) ........................................... 1-10

ATDS, AT

DS (Dialing a Stored Telephone Number) ............................... 1-10

ATE (Asynchronous Echo) ........................................................................... 1-11

ATH (Busy Out Test) .................................................................................... 1-11

ATL (Speaker Volume) ................................................................................. 1-11

ATM (Speaker Control)................................................................................. 1-12

ATO1 (Retrain) ............................................................................................. 1-12

ATP, ATT, AT

PT (Dial Type) ..................................................................... 1-13

ATQ (Result Codes) ...................................................................................... 1-13

ATS (S-Register)............................................................................................ 1-14

ATT (Dial Type) ............................................................................................ 1-14

ATV (Result Code Format) ........................................................................... 1-14

ATX (Call Progress) ..................................................................................... 1-15

ATY (Longspace Disconnect) ...................................................................... 1-18

ATZ (Selecting an Option Set) ...................................................................... 1-18

AT& Commands ........................................................................................... 1-19

AT&C (DCD Control)................................................................................... 1-19

AT&D (DTR Control) .................................................................................. 1-20

AT&F (Reinitialize Memory)........................................................................ 1-22

AT&G (Guard Tone) ..................................................................................... 1-22

AT&I (Display Modem ID) .......................................................................... 1-23

AT&J (Dial Line Jack Types) ........................................................................ 1-24

AT&L (Line Type) ........................................................................................ 1-25

AT&M (AT Data Format) ............................................................................. 1-26

AT&P (Pulse Cycle) ...................................................................................... 1-27

AT&R, AT

CT (CTS Control) .................................................................... 1-28

AT&S, AT

MR (DSR Control) ................................................................... 1-29

AT&T (Test) .................................................................................................. 1-30

AT&T4, AT&T5 (Accept RDL) .................................................................... 1-31

AT&V, AT

ST (Modem Status Display)...................................................... 1-31

Operating Status Messages ....................................................................... 1-32

DTE Rate/Status Summary ...................................................................... 1-34

Error-Correction and Data-Compression Status........................................ 1-35

Transmit and Receive Throughput and Link Utilization Status Display .. 1-36

EIA/TIA 232-D (CCITT V.24) Signal Status ............................................... 1-37

Status Summary Line ............................................................................... 1-38

Display Modem ID ................................................................................... 1-41

CQMS Parameter Status ........................................................................... 1-41

AT&W (Save Changes: Creating New Option Sets) ..................................... 1-45

AT&X (Clock) .............................................................................................. 1-47

AT&Y (Power Up in Option Set) ................................................................. 1-47

Contents (continued)

Chapter 1. AT Commands (Continued)

AT&Z, AT

CN (Enter Telephone Numbers) ............................................... 1-48

Commands ........................................................................................... 1-49

AA (Answer) ........................................................................................ 1-49

AP (Adaptive Rate) .............................................................................. 1-50

AS (Answer in Restoral) ...................................................................... 1-51

AY (Auto Type) .................................................................................... 1-52

BD (Blind Dial) .................................................................................... 1-52

BK (Break Handling) ........................................................................... 1-53

CA (Answer/Originate Mode)............................................................... 1-53

CD (DCD Loss Disconnect).................................................................. 1-54

CM (Connect Message)......................................................................... 1-54

CN, AT&Z (Entering Telephone Numbers) ......................................... 1-54

CT, AT&R (C, TS) ................................................................................ 1-54

DA (Default Dialing) ............................................................................ 1-55

DB (Buffer Delay) ................................................................................ 1-56

DC (Data Compression) ....................................................................... 1-57

DD (Dial Wait) ..................................................................................... 1-57

DE (DTE Rate)...................................................................................... 1-58

DF (Data Format) ................................................................................. 1-59

DI (Leased to Dial Option) ................................................................... 1-59

DL (RTS/CTS Delay) ........................................................................... 1-60

DP (Pause Delay) ................................................................................. 1-60

DR (Auto Redial) ................................................................................. 1-61

DS, ATDS (Dial a Stored Telephone Number) ..................................... 1-61

DT (DTR Delay) .................................................................................. 1-61

EC (Error Correction) ........................................................................... 1-62

FC (Fast Call)........................................................................................ 1-63

FL (Flow Control) ................................................................................ 1-64

HD (Hold Dial Line) ............................................................................ 1-66

LA (DTE Circuit 141)........................................................................... 1-68

LC (Line Compensation)....................................................................... 1-68

LD (DTE Circuit 140)........................................................................... 1-69

LE (Dial to Leased Option, Automatic Disconnect) ............................ 1-69

LL (Local Analog Loopback Test Busy Out) ....................................... 1-70

LN (Link Telephone Numbers)............................................................. 1-70

LS (Low Speed) .................................................................................... 1-71

LT (DTE Pin 25) ................................................................................... 1-72

MD (PSTN Signaling) .......................................................................... 1-72

MF (Modem Flow Control) .................................................................. 1-74

MM (Modulation Mode) ...................................................................... 1-74

MN (Minimum Rate) ........................................................................... 1-76

MR, AT&S (DSR Control) ................................................................... 1-76

MS (AT Messages) ............................................................................... 1-76

MX (Maximum Rate) ........................................................................... 1-77

vii

Contents (continued)

Chapter 1. AT Commands (Continued)

NB (Buffer Option) .............................................................................. 1-77

NC (Network Compensation)................................................................ 1-78

ND (View Stored Telephone Numbers) ............................................... 1-78

OC (External Control) .......................................................................... 1-79

OP (External Option Set Select) ........................................................... 1-79

OS (Overspeed) .................................................................................... 1-80

PE (Enable/Disable Password Protection) ........................................... 1-80

PF (Set Protection) ............................................................................... 1-80

PN (Unlock Password Protection)......................................................... 1-81

PT (Dial Type) ...................................................................................... 1-81

PW (Change Password) ........................................................................ 1-82

RA (Remote Access) ............................................................................ 1-82

RC (Initiate, Terminate, orAbort Remote Conﬁguration Session) ...... 1-83

Initiating a Remote Conﬁguration Session with a Dial Modem .............. 1-83

Initiating a Remote Conﬁguration Session with a Leased Line Modem .. 1-85

Terminating a Remote Conﬁguration Session .......................................... 1-86

Aborting a Remote Conﬁguration Session ............................................... 1-86

RE (Initiate/Terminate Restoral) .......................................................... 1-87

RP (Parity) ............................................................................................ 1-90

RS (RTS Control) ................................................................................. 1-91

RT (Auto Retrain) ................................................................................. 1-92

SC (Speed Conversion) ........................................................................ 1-93

SI (DTE Inactivity) ............................................................................... 1-93

SL (Error Correction ID)....................................................................... 1-94

SM (Data Transfer Mode) .................................................................... 1-94

SR (RTS/DCD Remote Signaling) ....................................................... 1-96

ST, AT&V (Modem Status Display) .................................................... 1-97

TD (Throughput Delay Minimization) ................................................. 1-97

*TL (Tone Length) ................................................................................. 1-98

AT*TT (Call Timeout) ................................................................................. 1-98

AT*XC (Error Correction Reliable Messages) ........................................... 1-99

AT*ZC (Callback Feature)........................................................................... 1-100

AT*ZD (Dial Restricted) ............................................................................. 1-101

AT*ZI (Enter Access Security Group Password) ........................................ 1-101

AT*ZP (Select Tones withAccess Security) ............................................... 1-102

AT*ZR (Remote Number Required) ........................................................... 1-102

AT*ZS (Simulated Ringback)...................................................................... 1-103

AT*ZV (Password Veriﬁcation) .................................................................. 1-103

viii

Contents (continued)

Chapter 2. Front Panel Operation

Introduction .................................................................................................. 2-2

Status/Option Sets/Dialing Menu ................................................................. 2-3

Test Options .................................................................................................. 2-5

Modulation Options ...................................................................................... 2-6

Restoral Options ........................................................................................... 2-8

Restoral Indications .................................................................................. 2-9

Conﬁguring for Dial Restoral ................................................................... 2-10

Interpreting the DTR Option Setting......................................................... 2-13

Error Correction and Data Compression Options ......................................... 2-14

ACU Options ................................................................................................ 2-15

ACU Selection .......................................................................................... 2-16

V.25 bis Data Format ................................................................................ 2-17

NoACU Data Format................................................................................. 2-17

Character Length....................................................................................... 2-18

V.25 bis Character Selection .................................................................... 2-18

Sync Idle ................................................................................................... 2-18

V.25 bis Responses ................................................................................... 2-19

LPDA2 Address ........................................................................................ 2-19

LPDA2 Identiﬁcation Number.................................................................. 2-20

LPDA2 Determination ............................................................................. 2-20

Terminal Options .......................................................................................... 2-20

Telco Options................................................................................................. 2-23

Dial Line Transmit Level ......................................................................... 2-24

Leased Line Transmit Level ..................................................................... 2-24

Dialing Options ............................................................................................. 2-25

Front Panel Security Options ........................................................................ 2-26

Unlocking the Modem............................................................................... 2-27

Access Security Options................................................................................ 2-28

Group PW Enable/Disable........................................................................ 2-29

If the Answer Modem Is Not Using the Callback Feature........................ 2-30

If the Calling Modem Is Providing the Callback Number ....................... 2-31

Using the Callback Feature with an Originate-Only Modem .................. 2-33

Manual Dialing and Callback DTMF Equivalencies ............................... 2-33

Network Control Options ............................................................................. 2-34

Override Mode ......................................................................................... 2-35

Network Control Address.......................................................................... 2-35

Network Control Port Rate ....................................................................... 2-36

Pass Thru .................................................................................................. 2-36

Remote Conﬁguration Options ..................................................................... 2-37

Setting a Remote Modem's Leased Line Address .................................... 2-40

Searching for a Remote Modem's Leased Line Address .......................... 2-41

Setting or Searching for a Remote Modem's Leased Line Address ......... 2-43

Performing Numeric Entry............................................................................ 2-45

Contents (continued)

Chapter 3. Automatic Calling Interfaces

Introduction .................................................................................................. 3-3

V.25 bis ACU ................................................................................................ 3-3

Call Establishment Methods ..................................................................... 3-6

Modem Conﬁguration .............................................................................. 3-6

Addressed Mode........................................................................................ 3-7

V.25 bis Commands ............................................................................. 3-7

V.25 bis Responses ............................................................................... 3-10

Call Failure Responses ......................................................................... 3-11

Call Progress Responses ...................................................................... 3-12

Result Code Responses......................................................................... 3-12

Reliable Connection Response ............................................................. 3-13

Programming Guide for the V.25 bis Auto-Call Unit (ACU) ................... 3-13

Asynchronous Frame Format ............................................................... 3-14

Synchronous Bit-Oriented Frame Format ............................................ 3-15

Synchronous Character-Oriented Frame Format ................................. 3-16

V.25 bis Control Signaling in Addressed Mode ....................................... 3-17

Idle Condition ...................................................................................... 3-17

Dialog State........................................................................................... 3-18

Connecting State .................................................................................. 3-18

Data State ............................................................................................. 3-19

Disconnecting ...................................................................................... 3-19

Direct Mode............................................................................................... 3-20

Direct Answering ................................................................................. 3-20

Direct Dialing........................................................................................ 3-20

Manual Answering and Dialing................................................................. 3-20

Manual Answering................................................................................ 3-21

Manual Dialing ..................................................................................... 3-21

LPDA2 Command Set................................................................................... 3-22

How to Conﬁgure for LPDA2 ACU.......................................................... 3-22

LPDA2 ACU Control Commands ............................................................ 3-22

LPDA2 Message Format........................................................................... 3-23

Information Field Format and Command ................................................. 3-23

Header (H) ........................................................................................... 3-24

Identiﬁer (I)........................................................................................... 3-24

Modem Address (A).............................................................................. 3-24

Command Code (C).............................................................................. 3-24

Data Field (D) ...................................................................................... 3-24

Information Field Format and Response................................................... 3-25

Header (H) Response Field .................................................................. 3-25

Identiﬁer Field (I).................................................................................. 3-25

Modem Address (A) ............................................................................. 3-26

Command Code (C) ............................................................................. 3-26

Sense Byte (SB) ................................................................................... 3-26

Data Field (D) ...................................................................................... 3-26

Framing Rules........................................................................................... 3-27

LPDA2 Dial Command ............................................................................ 3-27

Dial Command Sense Bytes ................................................................. 3-30

Dial Response Data Field ..................................................................... 3-31

Contents (continued)

Chapter 3. Automatic Calling Interfaces (Continued)

LPDA2 Disconnect Command.................................................................. 3-31

Disconnect Command Sense Byte........................................................ 3-31

Disconnect Response Data Field .......................................................... 3-32

Using an External Auto-Call Unit (Bell 801C or Codex 2207)..................... 3-33

To Initiate a Call... ................................................................................ 3-33

To Terminate a Call............................................................................... 3-33

Chapter 4. Testing Your Modem

Introduction .................................................................................................. 4-2

Quick Checks ................................................................................................ 4-2

Automatic Self-Test ...................................................................................... 4-2

Starting the Automatic Self-Test .............................................................. 4-3

Handling Error Messages ......................................................................... 4-3

System Testing............................................................................................... 4-4

326XFAST Synchronous Data Compression Testing .............................. 4-5

Local Analog Loopback Test (AT&T1)..................................................... 4-5

Local Analog Loopback Pattern Test (AT&T8) ....................................... 4-8

Remote Digital Loopback Test (AT&T6) ................................................. 4-10

Remote Digital Loopback Pattern Test (AT&T7) .................................... 4-12

Data Mode Pattern Test ............................................................................ 4-14

Local Digital Loopback (AT&T3) ............................................................ 4-16

Busy Out (ATH1) ..................................................................................... 4-18

Retrain (AT01) .......................................................................................... 4-19

326XFAST DTE Cable Diagnostics ........................................................ 4-20

Chapter 5. Specifications

Introduction .................................................................................................. 5-2

Physical Characteristics ................................................................................ 5-2

Operating Mode Characteristics ................................................................... 5-2

Telephone Line Type ................................................................................ 5-2

FAST Modulation Mode .......................................................................... 5-2

V.32 bis Modulation Mode ....................................................................... 5-2

V.32 Modulation Mode ............................................................................ 5-3

V.22 bis Modulation Mode ....................................................................... 5-3

V.22 Modulation Mode ............................................................................. 5-3

Bell 212 Modulation Mode ...................................................................... 5-3

V.21 Modulation Mode ............................................................................. 5-4

Bell 103 Modulation Mode ...................................................................... 5-4

Environmental Limits ................................................................................... 5-4

Primary Power Requirements ....................................................................... 5-4

Transmitter .................................................................................................... 5-5

Output Level.............................................................................................. 5-5

Transmitter Timing.................................................................................... 5-5

Contents (continued)

Appendix A. ASCII/EBCDIC Hexadecimal Equivalents

Appendix B. Options and Displays Worksheet

Index

AT Commands 1-1

Chapter 1

AT Commands

Contents

AT, AT& and AT*Command Descriptions ................................................. 1-5

Selecting Options and Settings ................................................................. 1-8

ATD (Dialing an Unstored Telephone Number) ........................................... 1-10

ATDS, AT*DS (Dialing a Stored Telephone Number) ............................... 1-10

ATE (Asynchronous Echo) ........................................................................... 1-11

ATH (Busy Out Test) .................................................................................... 1-11

ATL (Speaker Volume) ................................................................................. 1-11

ATM (Speaker Control)................................................................................. 1-12

ATO1 (Retrain) ............................................................................................. 1-12

ATP, ATT, AT*PT (Dial Type) ..................................................................... 1-13