Altec AL5068S, AL5068S-3V User Manual

AL5068S Designer’s Guide

ISDN Socket Modem

AL5068S, AL5068S-3V Series

Designer’s Guide

RELEASED 13. SEPTEMBER 2006

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AL5068S Designer’s Guide

Information provided by Altec Electronic AG is believed to be accurate and reliable.
However, no responsibility is assumed by Altec Electronic for its use, nor any
infringement of patents or other rights of third parties which may result from its use.
No license is granted by implication or otherwise under any patent rights of Altec
Electronic other than for circuitry embodied in Altec products. Altec Electronic
reserves the right to change circuitry at any time without notice. This document is
subject to change without notice.

Product names or services listed in this publication are for identification purposes
only, and may be trademarks or registered trademarks of their respective companies.
All other marks mentioned herein are the property of their respective owners.

© 2006 Altec Electronic AG
Printed in Switzerland
All Rights Reserved

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AL5068S Designer’s Guide

TABLE OF CONTENTS

1. INTRODUCTION................................................................................................. 5

1.1 Overview ...................................................................................................... 5

1.2 Product description....................................................................................... 5

1.3 Features ....................................................................................................... 6

1.4 Command Sets and S-Registers.................................................................. 6

2. TECHNICAL OVERVIEW ................................................................................... 7

2.1 Dialing procedures ....................................................................................... 7

2.2 AT Commands ............................................................................................. 7

2.2.1 Configuration Commands......................................................................... 7

2.2.2 AT Connection Commands....................................................................... 7

2.3 ISDN Protocols:............................................................................................ 8

2.4 Firmware Updates ........................................................................................ 8

2.5 Supported Interfaces .................................................................................... 8

2.7 Power consumption and power down modes............................................... 9

2.8 Command Sets and S-Registers.................................................................. 9

3. HARDWARE INTERFACE................................................................................ 10

3.1 Interface Signals......................................................................................... 10

3.2 Signal Descriptions..................................................................................... 10

3.3 S0 INTERFACE .......................................................................................... 16

3.4 External Reset Interface............................................................................. 17

3.4.1 Recommended Reset Circuit.................................................................. 17

3.5 IOM-2 Bus Interface ................................................................................... 18

4. DESIGN CONSIDERATIONS ........................................................................... 19

4.1 PC Board Layout Guidelines ...................................................................... 19

4.1.1 General................................................................................................... 19

4.1.2 Electromagnetic Interference (EMI) Considerations ............................... 20

4.1.3 Other Considerations.............................................................................. 20

4.2 Manufacturing Considerations.................................................................... 21

5. PACKAGE DIMENSIONS................................................................................. 22

6. SOCKET MODEM APPROVALS ..................................................................... 23

6.1 Considerations for Telecom Approvals....................................................... 23

6.1.1 ISDN Connection .................................................................................... 23

6.2 Considerations for Electrical Safety............................................................ 23

6.2.1 Conditions for Maintaining Safety Compliance. ...................................... 23

6.2.2 Power Supply [EN60950-1:2001, 1.6]..................................................... 23

6.3 Considerations for EMC ............................................................................. 24

6.3.1 EMC Compliance (EU Countries) ........................................................... 24

6.3.2 Installation in Host Systems (European Countries)................................ 24

7. Appendix A ...................................................................................................... 25

7.1 Schematic of external codecs .................................................................... 25

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AL5068S Designer’s Guide

List of Figures

FIGURE 1-1. TYPICAL SERIAL BLOCK DIAGRAMS ................................................ 8

FIGURE 3.1 – SERIAL TTL PINOUT ....................................................................... 11

FIGURE 4-1. AL5068S SOCKET MODEM PHYSICAL DIMENSIONS ................... 22

List of Tables

TABLE 3.1. SERIAL TTL SIGNALS ................................................................................. 11

TABLE 3.2 / SIGNAL DESCRIPTIONS .............................................................................. 12

TABLE 3.3 / LED INTERFACE SIGNAL DESCRIPTIONS ..................................................... 12

ABLE 3.4 / SERIAL INTERFACE SIGNAL DESCRIPTIONS.................................................. 13

T

T

ABLE 3.5 / DIGITAL ELECTRICAL CHARACTERISTICS ..................................................... 14

TABLE 3.6 / ABSOLUTE MAXIMUM RATINGS................................................................... 15

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AL5068S Designer’s Guide

1. INTRODUCTION

1.1 Overview

This Designer’s Guide describes the hardware for the following ISDN socket
modems of Altec Electronic AG:

AL5068S ISDN Socket Modem (5V Version)
AL5068S-3V ISDN Socket Modem (3V Version)
AL5068SI-3V ISDN Socket Modem (3V Version and IOM-2 bus)

The description apply to all these isdn-modems with any differences between
product families noted. Refer to Modem Firmware Release notes for
commands applicable to modem firmware. AT commands and S registers are
defined in the AT Command Reference Manual.

1.2 Product description

Altec’s AL5068S and AL5068SI-3V Socket Modem Family provides the OEM
with a complete ISDN data/voice/speakerphone modem in a compact socket­mountable module. This modules enables any devices to send and receive
data over the ISDN network. The European EuroISDN DSS-1 ISDN network
is supported. The module is fully approved and homologated and conforms to
the CE regulations. This gives fastest time-to-market to ISDN-enable any
devices.

The compact size and high level of integration of the Socket Modem
minimizes real estate and cost for motherboard and box modem applications.
Its low power consumption makes it ideal for a wide variety of embedded
control applications. The pin compatibility between the full range of Analog
Series Socket Modems, ISDN and GSM Socket Modems allows upgrading
and production configurability without hardware changes.

As a data modem, the AL5068S Socket Modem can send and receive data at
speeds up to 64kbps and 128kbps in the 2-channel version. B-Channel
protocols such as V.110, V.120, PPP, transparent and X.75 are supported.

For X.25 networks, X.31 Case A and X.31 Case B (D- and B-channel) is
supported. The integrated X.3 PAD can be used for data transfer to the X.25
network.

The AL5068SI-3V Socket Modem supports Voice features. By adding two
external PCM Codecs the modem supports two independent analog voice
ports. Digital voice transfer is also supported.

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AL5068S Designer’s Guide

1.3 Features

• D-Channel Protocols:

- DSS1

- X.31 (D-Channel)

• B-Channel Protocols:

- HDLC transparent

- PPP async-sync (RFC1662)

- X.75,

- V.120

- V.110

- X.31, X.25

• ISDN S0 (I.430) Interface.

• Several Dial Procedures:

- AT commands

- Auto Connect

• X.3 PAD intergrated.

• Command Interpreters with standard AT Commands

• Trace Log Buffers.

• Caller ID access control.

• Firmware updatable

• Optional analog voice interface

• Programmable EAZ / MSN

• Advice of charge

• Hardware-based ISDN modem controller.

• Worldwide operation

- Complies to CTR3 and other country requirements

• Built-in host / DTE interface with speeds up to 230.4 kbps

- Serial ITU-T V.24 (EIA/TIA-232-E) logical interface.

• Flow control (RTS/CTS) and speed buffering

• Automatic format + Speed sensing

• +3.3V / +5V DC Operation.

• Typical power use: 130 mW (Normal Mode)

• Compact size (64.5 x 26.5 mm)

• EMC approved according EN50081, EN55082, EN55022, EN55024

• Safety approved according EN60950 :2001

• Network approved according TBR3

• 2 Years warranty.

1.4 Command Sets and S-Registers

Modem operation is controlled by AT and S-Register Commands issued by the DTE.
Refer to the AT commands for the AL5068S Reference Manual

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AL5068S Designer’s Guide

2. TECHNICAL OVERVIEW

2.1 Dialing procedures

The following dial procedures are supported:

• AT commands

• Auto-connect (Hotline call)

• X.3 PAD

2.2 AT Commands

Via AT-Commands you may control the ISDN connections and change the
configuration of the AL5068S. ISDN specific configuration commands are
supported.

2.2.1 Configuration Commands

A range of parameters can be controlled by the configuration commands of
the AL5068S as listed below:

• Setting own msn number

• Recommended B channel protocol

• Serial Interface Parameters (baud rate, flow control, etc.)

• AT / Auto-connect operation mode

• Firmware download

2.2.2 AT Connection Commands

Command Function Response

ATDxxx

ATH

Whenever the ISDN connection with a communication partner is established,
a transparent channel for serial data is provided.

A detailed description of the AT-Commands is found in the AT-Command
manual for the socket modem AL5068S.

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Establishes an ISDN connection CONNECT

Disconnects an ISDN connection OK

AL5068S Designer’s Guide

2.3 ISDN Protocols:

ISDN Channel Protocols

D-channel protocols:

B-channel protocols:

2.4 Firmware Updates

Firmware updates can always be affected via the local serial interface.

2.5 Supported Interfaces

The major hardware signal interfaces of the AL5068S Series Socket Modem
are illustrated in Figure 1-1.

TTL

Serial Interface

Test Interface

(optional)

Indicators

Leds

5

3

4

4

Figure 1-1. Typical Serial Block Diagrams

DSS1
X.31 D-channel

HDLC (transparent)
PPP sync-async (RFC 1662)
X.75
Bit-transparent
X.31 / X.25
V.110
V.120

4

Modem
Module

4

RJ45

Modular Jack

8 pole

Optional IOM-2

Interface for

external PCM

Codecs

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