Western Telematic Switch APS-8M User manual

Brand: Western Telematic

Model: Switch APS-8M

Type: User manual

This manual is also suitable for

APS-8M

WTI Part No. 13511

Rev. A

APS-8M

Asynchronous Port Switch

with Internal Modem

Firmware Version 3.x

User’s Guide

Warnings and Cautions:

INSTALLATION INSTRUCTIONS

Secure Racking

If Secure Racked units are installed in a closed or multi-unit rack assembly,

they may require further evaluation by Certiﬁcation Agencies. The following

items must be considered.

1. The ambient within the rack may be greater than room ambient.

Installation should be such that the amount of air ﬂow required for

safe operation is not compromised. The maximum temperature for the

equipment in this environment is 45°C. Consideration should be given to

the maximum rated ambient.

2. Installation should be such that a hazardous stability condition is not

achieved due to uneven loading.

Input Supply

1. Check nameplate ratings to assure there is no overloading of supply

circuits that could have an effect on overcurrent protection and supply

wiring.

2. When installing 48 VDC rated equipment, it must be installed only per

the following conditions:

A. Connect the equipment to a 48 VDC supply source that is electrically

isolated from the alternating current source. The 48 VDC source is

to be connected to a 48 VDC SELV source.

B. Input wiring to terminal block must be routed and secured in such

a manner that it is protected from damage and stress. Do not route

wiring past sharp edges or moving parts.

C. A readily accessible disconnect device, with a 3 mm minimum

contact gap, shall be incorporated in the ﬁxed wiring.

Grounding

Reliable earthing of this equipment must be maintained. Particular attention

should be given to supply connections when connecting to power strips, rather

than direct connections to the branch circuit.

APS-8M Asynchronous Port Switch; User’s Guide

No Serviceable Parts Inside;

Authorized Service Personnel Only

Do not attempt to repair or service this device yourself. Internal components

must be serviced by authorized personnel only.

• Shock Hazard - Do Not Enter

Disconnect Power

If any of the following events are noted, immediately disconnect the unit from

the outlet and contact qualiﬁed service personnel:

1. If the power cord becomes frayed or damaged.

2. If liquid has been spilled into the device or if the device has been exposed

to rain or water.

iii

Table of Contents

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

2. Unit Description

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1. Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2. Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

3. Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1

3.2. Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.3. Connect your Equipment to the Serial Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.4. Communicating with the APS-8M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

4. Hardware Installation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1. Connecting Power to the APS Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1.1. AC Powered Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1.2. DC Powered Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2. Connect a Telco Line to the Modem Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.3. Connecting Devices to the APS Serial Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

5. Conﬁguration

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1. Access to the APS Command Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2. System SetUp Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.3. Password Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.4. The System Parameters Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5.4.1. The Password Directory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

5.4.1.1. Adding Passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

5.4.1.2. Editing and Deleting Passwords: . . . . . . . . . . . . . . . . . . . . . . . . 5-7

5.4.1.3. Deleting the Entire Password Directory . . . . . . . . . . . . . . . . . . 5-8

5.4.2. The Dial Back Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

5.5. Port Conﬁguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

5.5.1. Conﬁguration Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

5.5.2. Port Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

5.5.3. RS232 Port Conﬁguration Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

5.5.4. The Invalid Access Lockout Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

5.6. Copying Parameters to All Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

5.7. Save User Selected Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

6. The Internal Modem

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.1. Communicating with the Internal Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.2. Common AT Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

7. The Status Screens

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.1. The Port Status Screen (/S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.2. The Port Diagnostics Screen (/SD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7.3. The Port Parameters Screens (/W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

7.4. The Password Directory Screen (/V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

8. Operation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1. Any-to-Any Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1.1. Port Connection and Disconnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1.1.1. Connecting Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1.1.2. Disconnecting Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

8.1.2. Deﬁning Hunt Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

APS-8M Asynchronous Port Switch; User’s Guide

8. Operation (Continued)

8.2. Passive Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

8.3. Buffer Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

8.3.1. Reading Data from Buffer Mode Ports . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

8.3.2. Port Buffers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8

8.4. Modem Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8

9. Saving and Restoring Conﬁguration Parameters

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.1. Sending Parameters to a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.2. Restoring Saved Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

10. Upgrading APS-8M Firmware

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

11. Command Reference Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-

11.1. Command Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

11.2. Command Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2

11.3. Command Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3

11.4. Command Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4

Appendices:

A. RS232 Port Interface

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-1

B. Speciﬁcations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Apx-2

C. Customer Service

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-3

D. Trademark and Copyright Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Apx-4

E. Regulatory Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Apx-5

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Index-1

List of Figures

2.1.. . Instrument Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2.. . Instrument Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

3.1.. . The Supervisor Level Help Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3.2.. . The Port Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

4.1.. . Terminal Block Assembly (DC Units Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

5.1.. . The System Parameters Menu (/F) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

5.2.. . The Edit Password Directory Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

5.3.. . The Add Name/Password Menu (Defaults Shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

5.4.. . The Edit/Delete Name/Password Menu (Sample Values Shown) . . . . . . . . . . . . . . . . . 5-7

5.5.. . Port Conﬁguration Menu (Port 1 Shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

5.6.. . Port Parameters Menu; Modem Mode (Port 3 Shown) . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

5.7.. . The Copy Port Parameters Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

7.1.. . The Port Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.2.. . The Port Diagnostics Screen (Defaults Shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7.3.. . The Port Parameters Screen (Port 1 Shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

7.4.. . The Password Directory Screen (Sample Values Shown) . . . . . . . . . . . . . . . . . . . . . . . 7-5

A.1. . RS232 Port Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-1

1-1

1. Introduction

WTI’s APS-8M Asynchronous Port Switch allows reliable, high-speed

connections between PCs, modems, and other devices using dissimilar baud

rates, parity, and ﬂow control. The APS-8M supports communication at

speeds up to 115.2 Kbps, and features full RTS/CTS hardware handshaking

and a 33.6K V.34 internal modem. Lightening-swift data throughput and full

ﬂow control make the APS-8M the perfect data switch for today’s high speed

communications applications.

Versatile Connectivity

Up to seven different devices can be connected to the APS-8M without the

need to select a common baud rate or parity. Each port can be individually

conﬁgured for speciﬁc baud rates, parity, handshaking, and various other

parameters and options.

Easy Set-Up and Operation

Conﬁguration of the APS-8M is simple. A menu system is used to select

communications parameters, and enable or disable options. The APS-8M

can easily adapt to the requirements of almost any data communications

application.

Password Protected Connection and Command Access

The APS-8M provides two levels of user security; the Supervisor level and

the Non-Supervisor level. The Supervisor level, which is intended for use by

system managers and other administrators, provides complete access to all

port connection / disconnection functions, operating features and conﬁguration

menus, and also allows access to any port on the switch. The Non-Supervisor

level is ideal for co-location applications, since users are only permitted to

view status and connect to the ports allowed by their password.

Internal Modem

The APS-8M features a 33.6K v.34 Internal modem; allowing easy, convenient

out-of-band access to conﬁguration and control functions.

Non-Volatile Memory

If power to the unit is lost or interrupted, the APS-8M’s non-volatile memory

will retain user-deﬁned parameters and port connections.

1-2

APS-8M Asynchronous Port Switch; User’s Guide

Modem Communication

The APS-8M can be controlled by a local PC that communicates with the

unit via cable, or controlled remotely via external modem. Hyperterminal (or

another communications program) is used to send commands to connect ports

or display status.

Configuration Backup

Once you have conﬁgured the APS-8M to ﬁt your application, parameters and

options can be saved to an ASCII text ﬁle on your PC. This allows you to

quickly restore user-selected parameters if the unit conﬁguration is accidentally

altered or deleted. Saved parameters can also be uploaded to other APS-8M

units. This allows rapid set-up when several units will be conﬁgured with

identical or similar parameters.

Typographic Conventions

Throughout this manual, typefaces and characters have been used to denote the

following:

^ (e.g. ^X) Indicates a control character. For example, the text

^X" (Control X) indicates the [Ctrl] key and the

[X] key must be pressed simultaneously.

COURIER FONT Indicates characters typed on the keyboard.

For example,

/E or /P 02.

[Bold Font] Text set in bold face and enclosed in square brackets,

indicates a speciﬁc key. For example,

[Enter] or [Esc].

< > Indicates required keyboard entries.

For Example:

/P <n>.

[ ] Indicates optional keyboard entries.

For Example:

/W [n].

2-1

2. Unit Description

2.1. Front Panel

Figure 2.1: Instrument Front Panel

 CLEAR: Restarts the APS operating program without changing user-

selected parameter settings or breaking port connections.

 ON: Lights when AC Power is applied.

 SET: Used to Initialize the APS to factory defaults. To initialize, press

and hold both the SET and CLEAR buttons, release only the CLEAR

button, and then release the SET button.

Notes:

• During initialization, all port LEDs will ﬂash ON for approximately

one half second.

• During initialization, all command-selected parameters will be

cleared, and the APS will revert to default parameters.

 RDY: Flashes to indicate unit is operational.

 ACTIVITY LEDs: Light when corresponding port is receiving data.

2-2

APS-8M Asynchronous Port Switch; User’s Guide

2.2. Back Panel

Figure 2.2: Instrument Back Panel

 Power Cable Receptacle: AC powered units only. DC units include a

terminal block assembly as described in Section 4.1.2.

 Power Switch

 Modem Port (Line Port): For connection to your telco line. For

information regarding modem conﬁ guration, please refer to Section 6.

 RS232 PORTS: For connection to RS232 console ports on user

devices. For more information, please refer to Section 4.3 (connection

instructions), Appendix A (interface description), and Section 5.2

(Setup Ports).

3-1

3. Getting Started

This Quick Start Guide describes a simpliﬁed installation procedure for the

APS-8M hardware, which will allow you to communicate with the unit in

order to demonstrate basic features and check for proper operation.

Note that this Quick Start Guide does not provide a detailed description of

unit conﬁguration, or discuss advanced operating features in detail. In order

to take full advantage of the complete range of features provided by this

unit, it is strongly recommended that you complete the entire Installation and

Conﬁguration sections after completing this Quick Start procedure.

3.2. Hardware Installation

1. Apply Power to the APS-8M: Refer to the power rating nameplate

on the APS-8M back panel, and then connect the unit to an appropriate

power source. Make certain to review the safety precautions listed at the

beginning of this User's Guide and in Section 4.1, and then set the Master

Power Switch on the APS-8M back panel to the ON position.

2. Connect your Telco Line to the APS-8M: Use a standard RJ-11 cable to

connect your Telco outlet to the Modem (Line) Port, located on the

APS-8M back panel. Note that the unit sees the internal modem as

Port 8. To connect to the Modem Port, use the procedure described in

Section 3.4.

3. Connect a PC to the APS-8M: Attach a standard null modem cable

from your PC COM port to the Port 1 connector on the APS-8M

back panel.

Note: When the APS-8M is shipped from the factory,

communications parameters are set as follows: 9600 bps, RTS/CTS

Handshaking, 8 Data Bits, One Stop Bit, No Parity. Although the

APS-8M allows these parameters to be easily redeﬁned, for this Quick

Start procedure, it is recommended to conﬁgure your communications

program (e.g. HyperTerminal) to accept the default parameters.

3.3. Connect your Equipment to the Serial Ports

Use an appropriate DB9 cable to connect the RS232 Serial Port on your

equipment to the desired Serial Port on the APS-8M

• PCs and other DTE Devices: Use a standard null modem cable.

• External Modems and other DCE devices: Use a standard serial

modem cable.

3-2

APS-8M Asynchronous Port Switch; User’s Guide

3.4. Communicating with the APS-8M

The APS-8M command mode allows you to check unit status, change

conﬁguration parameters and connect and disconnect ports (including the

Modem Port.)

1. Access Command Mode: Start your communications program and press

[Enter]. The "APS>" Command prompt should appear, indicating that

you have successfully accessed command mode.

Note: If a password that permits access to Supervisor Mode has been

previously deﬁned, a prompt will be displayed. Key in a Supervisor

Level password, and press [Enter]. If a Supervisor Level password has

not yet been deﬁned, the prompt will not be displayed.

2. Review the Help Menu: At the APS Command Prompt, type /H and

press [Enter] to display the Help Menu (Figure 3.1), which provides a

basic listing of all APS-8M commands.

3. Port Status Screen: Type /S and press [Enter] to display the Port Status

Screen (Figure 3.2), which summarizes conditions at all APS-8M ports.

COMMAND MENU:

DISPLAY CONFIGURATION

/S Port Status /F System Parameters

/SD Port Diagnostics /P [n] Port Parameters

/W [n] Port Parameters (Who) /I Default and Test

/J Site ID /UF Upgrade Firmware

/H Command Menu (Help) /CP Copy Port Parameters

/V View Password Directory

CONTROL +--------------------+

<Enter> Enter Command Mode | n Port# or name |

/X Exit Command Mode | * “all” |

/C <n> [n] Connect - Local [Remote] | | “or” |

/D <n | ... | *> Disconnect Port(s) | <> Required entry |

/E <n | ... | *> Erase Buffer | [] Optional entry |

/U Send Parameter File +--------------------+

/UL Unlock Invalid Access

/D, /E, /I commands: add /Y to bypass “Sure (y/n)?”

APS>

Figure 3.1: The Supervisor Level Help Screen

3-3

Getting Started

4. Creating Connections Between Ports: The APS-8M can perform two

different types of port connections; Resident Connections and Third Party

Connections.

a) Resident Connection: Your resident port (e.g. Port 1) issues a /C

command to connect to a second port.

i. To connect Port 1 to Port 2, type /C 2 [Enter]. While Port 1

is connected, the APS-8M will not recognize commands

issued at Port 1. However, the unit will recognize a Resident

Disconnect Sequence issued at Port 1 or Port 2.

ii. Issue the Resident Disconnect Sequence (Logoff Sequence);

type ^X (press [Ctrl] and [X] at the same time).

b) Third Party Connection: Your resident port (e.g. Port 1) issues a

/C command to create a connection between two other ports.

i. To connect Port 2 to Port 3, type /C 2 3 [Enter].

ii. While Ports 2 and 3 are connected, Port 1 will still recognize

APS commands. Type

/S [Enter] to display the Port Status

Screen. The "STATUS" column should now list Ports 2 and 3

as connected, and Port 1 as "Free".

iii. Issue a Third Party Disconnect command to disconnect Ports 2

and 3; type /D 2 [Enter]. The unit will display the "Are you

Sure (y/n)?" prompt. Type

y and press [Enter] to disconnect.

iv. Type /S [Enter] to display the Port Status Screen. The

"STATUS" column should now list Ports 2 and 3 as "Free".

PORT STATUS: APS-M, Version 3.0, Site ID: (undeﬁned)

-----+------------------+------------+--------+--------+--------------

01 | (undeﬁned) | Unlocked | Free | Any | 0

02 | (undeﬁned) | Unlocked | Free | Any | 0

03 | (undeﬁned) | Unlocked | Free | Any | 0

04 | (undeﬁned) | Unlocked | Free | Any | 0

05 | (undeﬁned) | Unlocked | Free | Any | 0

06 | (undeﬁned) | Unlocked | Free | Any | 0

07 | (undeﬁned) | Unlocked | Free | Any | 0

Enter /H for command menu.

APS>

Figure 3.2: The Port Status Screen

3-4

APS-8M Asynchronous Port Switch; User’s Guide

5. Exit Command Mode: At the "APS>" command prompt, type /X and

press [Enter]. The APS-8M will exit command mode.

6. Access Command Mode via Modem: From a PC with a modem and

Telco line, dial the number for the line which is connected to the

APS-8M’s internal modem. Once the connection is established, the unit

should send the "APS>" command prompt, indicating that you have

successfully accessed command mode.

Note: If a password that permits access to Supervisor Mode has been

previously deﬁned, a prompt will be displayed. Key in a Supervisor

Level password, and press [Enter]. If a Supervisor Level password has

not yet been deﬁned, the prompt will not be displayed.

a) Type

/H and press [Enter] to display the Help Menu. If desired,

you may also wish to repeat the Port Connection / Disconnection

examples described in Step 4 above.

b) When you have ﬁnished communicating with the APS-8M unit,

type /X and press [Enter] to exit command mode and terminate the

modem connection to the unit.

This completes the Quick Start Guide for the APS-8M. Please proceed to

Sections 4 and 5 for complete installation and conﬁguation procedures.

4-1

4. Hardware Installation

4.1. Connecting Power to the APS Unit

The APS-8M is available in both AC and DC powered versions. When

connecting power, proceed as follows:

CAUTION:

• Before attempting to install this unit, please review the warnings

and cautions listed at the front of the user's guide.

• This device should only be operated with the type of power

source indicated on the instrument nameplate. If you are not

sure of the type of power service available, please contact your

local power company.

4.1.1. AC Powered Units

Plug the power cable (supplied with the unit) into the receptacle on the back

panel, and then connect the power cable to an appropriate, grounded outlet.

The APS features a self adjusting power supply that automatically adapts to

power supplies between 100 and 240 VAC. Press the Power Switch ON. The

ON LED should light and the RDY LED should begin to ﬂ ash.

4.1.2. DC Powered Units

The DC terminal block features two bus inputs as shown in Figure 4.1. This

allows the user to connect only one DC power source, or connect two DC

power sources where the second source serves as a backup. When connecting

the APS-8M to your DC power source, ﬁ rst remove the protective cover from

the terminal block, attach the wires from the -48V DC power source to the

screw terminals, connect your ground line to the labeled ground screw, and

then replace the protective cover.

Figure 4.1: Terminal Block Assembly (DC Units Only)

4-2

APS-8M Asynchronous Port Switch; User’s Guide

4.2. Connect a Telco Line to the Modem Port

Use a standard RJ-11 cable to connect your Telco outlet to the Modem (Line)

Port, located on the APS-8M back panel. Note that the unit sees the internal

modem as Port 8.

4.3. Connecting Devices to the APS Serial Ports

APS RS232 Ports one through seven are standard DB9 connectors, conﬁgured

as DTE Ports, and are similar to a standard serial port on a PC. For a detailed

description of the RS232 Port interface, please refer to Appendix A.

1. Access the APS-8M command mode.

2. Determine which RS232 port will be used for connection to the new

device (e.g. Port 3).

3. Use an appropriate DB9 cable to connect the RS232 serial port on the

device to the selected DB9 port on the APS.

a) External Modems and other DCE Devices: Use a standard serial

modem cable.

b) PCs and other DTE Devices: Use a standard null modem cable.

5. Select communication parameters for the port as described in Section 5.

5-1

5. Configuration

5.1. Access to the APS Command Mode

When the APS-8M command mode is active, commands can be invoked to

select parameters, and connect or disconnect ports.

Note:

• Command mode cannot be accessed from a Buffer Mode Port,

Passive Mode Port, or any port that is currently connected to another

APS-8M port.

• Conﬁguration commands are not available at any port where the

Supervisor Mode has been disabled.

• Supervisor Mode commands can only be invoked by users who have

logged in using a password that permits access to Supervisor Mode.

1. Start your communications program (e.g. HyperTerminal). Make certain

the APS and the communications program are set for the same parameters

(e.g. baud rate, parity, etc.).

2. Access command mode.

a) Local Access: To access command mode from a local PC that is

connected to the APS via cable, press

[Enter].

i. There must be no other characters preceding [Enter]. If you

have already hit other keys, press [Enter] twice.

ii. If a password that permits Supervisor Mode has been previously

deﬁned, the password prompt will be displayed. Key in a

password that permits Supervisor Mode and press [Enter].

b) Modem Access: To access the command mode via modem, proceed

as follows:

i. Dial the number for the APS-8M’s internal modem, or (if

present) an external modem connected to one of the APS-8M’s

RS232 ports.

ii. If a password that permits Supervisor Mode has been previously

deﬁned, the password prompt will be displayed. Key in a

password that permits Supervisor Mode and press [Enter].

5-2

APS-8M Asynchronous Port Switch; User’s Guide

5.2. System SetUp Ports

Ports 1 and 2 are designated as System SetUp Ports, and will therefore, always

permit password protected access to Supervisor Mode.

In order to ensure that access to command functions is always available, Ports

1 and 2 cannot be conﬁgured as Buffer Mode or Passive Mode Ports (Buffer

Mode Ports and Passive Mode Ports are not able to access command mode.) In

addition, Ports 1 and 2 always permit password protected access to Supervisor

Mode; the Supervisor Mode cannot be disabled at either of these two ports.

5.3. Password Functions

The APS-8M’s password directory allows you to deﬁne up to 32 different

passwords. These passwords are not only used to protect access to the

APS-8M unit, but are also used to determine the type of commands that each

user will be allowed to invoke, and the ports that each user will be allowed to

connect. This is accomplished by either granting or denying each password’s

access to Supervisor Mode and specifying permitted ports via the Password

Directory.

Passwords that have been granted access to Supervisor Mode are allowed to

change conﬁguration parameters and may connect to any APS-8M port. On

the other hand, passwords which are denied access to Supervisor Mode are

not allowed to change conﬁguration parameters, and are restricted to the ports

speciﬁcally allowed by that password. Therefore, the password entered during

commands, and also determines which ports you will be allowed to connect

to. Note that the password directory feature is described in greater detail in

Section 5.4.1.

Note that once you have deﬁned at least one password that permits access to

Supervisor Mode, the APS-8M will display a password prompt whenever you

attempt to access command mode. If a valid password, which allows access

to Supervisor Mode is entered, the APS-8M will then start up in Supervisor

Mode. Supervisor Level commands are summarized in Section 11.3 of this

User’s Guide.

5-3

Conﬁ guration

Notes:

• If you do not deﬁne at least one password that permits access

to Supervisor Mode, then Supervisor Level commands will be

available to all ports, and port access and conﬁguration functions

will not be password protected.

• If you wish to restrict users from changing APS-8M conﬁguration

parameters or connecting to restricted ports, you must deﬁne at least

one password that permits access to Supervisor Mode as described

in Section 5.4.1.

• If the unit is reset to default parameters, all passwords will be

erased, and Supervisor Level commands will be available at all

ports, without password protection.

Normally, passwords that permit access to Supervisor Mode can be entered at

any port in order to gain access to Supervisor command functions. Note that

if you wish to completely deny a port’s access to Supervisor Mode (even

with

a Supervisor Password), the Port Parameters menus (/P) can be used to disable

the Supervisor Mode at ports 3 through 8. The Supervisor Mode

cannot be

disabled at System SetUp Ports 1 and 2.

5.4. The System Parameters Menu

Before conﬁguring individual ports, the System Parameters should be deﬁned.

The System Parameters Menu (/F) allows you to set the Site ID Message,

enable/disable the Password on Dial Back Function, set the number of Dial

Back Attempts, set the Dial Back Delay Value, and access the menus which are

used to deﬁne passwords and access rights. All parameters that are deﬁned via

the System Parameters Menu are global, and will be applied to all

APS-8M ports.

Notes:

• The Site ID message cannot include double quotes.

• Both the Site ID and Password Directory will be cleared if the APS

is initialized to default settings.

• The System Parameters Menu is only available in Supervisor Mode.

5-4

APS-8M Asynchronous Port Switch; User’s Guide

To deﬁne System Parameters, you must ﬁrst access command mode, and then

type /F [Enter] to display the System Parameters Menu (Figure 5.1.) The

System Parameters Menu allows you to deﬁne the following:

1. Site ID: Type 1 and press [Enter], a prompt will appear. Key in the

desired text and press [Enter]. The Site ID will be listed on the status and

diagnostic screens. (Up to 32 chars.; Default = undeﬁned.)

2. Password on Dial Back: Enables/Disables the "Password on Dial Back"

feature as described in Section 5.4.2. (Default = Off.)

3. Dial Back Attempts: Sets the number of times that the APS-8M will

attempt to call the dial back number when the Dial Back feature is

properly conﬁgured and enabled. For more information on the Dial Back

feature, please refer to Section 5.4.2. (Default = 3.)

4. Dial Back Delay: Sets the amount of time that will elapse between Dial

Back Attempts. For more information on the Dial Back Feature, please

refer to Section 5.4.2. (Default = 30 Seconds.)

5. Edit Password Directory: Provides access to a series of menus that

are used to create, edit, and delete APS-8M passwords as described in

Section 5.4.1.

SYSTEM PARAMETERS:

1. Site-ID: (undeﬁned)

2. Password on Dial Back: Off

3. Dial Back Attempts: 3

4. Dial Back Delay: 30 Secs

5. Edit Password Directory

Enter: #<CR> to change,

<ESC> exit ...

Figure 5.1: The System Parameters Menu (/F)

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Model: Switch APS-8M

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