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5.

Connect the comms port of the Telesto Private Wire Modem to the serial COM port of a PC or
laptop computer.

6.

Start a terminal emulator, e.g., ZOC, on the computer and configure it to the correct COM port.

7.

Power up the Telesto Private Wire Modem.

8.

Type in the following command (this is a sequence of “AT” commands) at the terminal
emulator:

at&e0&e3&e14$sb9600&w0

The modem should reply with: OK (displayed by the terminal emulator).

9.

Reset the modem by typing 

atz

 in the terminal emulator.  The modem should reply with: OK.

10. Type in 

atl5

 at the terminal emulator.  The modem will display the configured parameters.

Ensure that the above commands have configured the parameters correctly as shown in Table
2.

11. Power down the Telesto Private Wire Modem.

12. Change dip switch 10 to DOWN position.

13. The firmware has now been configured; reassemble the Telesto Private Wire Modem.

Serial port data rate = 9600 bps

$sb9600

Data compression disabled

&e14

No flow control

&e3

No error correction

&e0

Function

AT Command

TELEPHONE MODEM “AT” COMMAND SETTINGS

Table 2: Telephone Modem “AT” Command Settings

Technical Description

Telesto Private Wire Modem      13

Содержание Private Wire

Страница 1: ...Telesto Private Wire Modem Manual...

Страница 2: ......

Страница 3: ...Telesto Private Wire Modem Manual...

Страница 4: ...Manuals graphics Manuals ReferenceManual Components Telesto_modem Private Wire Remote RevA CompleteManual TelestoPwModemManual lwp G Company Manuals graphics Manuals ReferenceManual Components Telesto...

Страница 5: ...pendix A Connector Pinouts Basic troubleshooting 15 5 Servicing 11 Configuration 9 Theory of Operation 9 Overview of the Hardware 9 4 Technical Description 7 3 Unpacking Post Delivery Inspection 5 2 O...

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Страница 7: ...ase read the instructions carefully If you have problems or need technical support please submit requests for technical support by e mail or fax When communicating your problem to us please give as mu...

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Страница 9: ...g and Identifies components and Post Delivery Inspection references an as shipped section Chapter 4 Technical Description Description of features and technical specifications Chapter 5 Servicing Recom...

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Страница 11: ...more of the following 1 Telesto Private Wire Modem 2 Power cable 3 Telesto Private Wire Modem Manual 4 As shipped Sheet 5 OEM Modem Manual Checking the As Shipped Sheets Please study the as shipped d...

Страница 12: ...This page intentionally left blank...

Страница 13: ...heory of Operation The two main functions of the Telesto modem are to interface the data from the Europa digitiser to the leased line telephony network and optionally to supply power to the E uropa di...

Страница 14: ...path for retransmission requests from the central site Both the remote site Telesto modem and its counterpart at the central site perform error detection and correction which may have been caused by...

Страница 15: ...o Modem in ANSWER mode the central site modem in this case is in ORIGINATE mode Both the hardware and firmware configurations are detailed below Hardware Configuration Inside the Telesto Private Wire...

Страница 16: ...interface 1 DOWN UP Telesto Modem Manufacturer s Default Function DIP Switch No Table 1 DIP Switch Settings UP OPEN DOWN CLOSED NOTE Baud Rate kbps Switch 13 Switch 14 28 8 UP UP 19 2 DOWN UP 14 4 UP...

Страница 17: ...terminal emulator The modem should reply with OK 10 Type in atl5 at the terminal emulator The modem will display the configured parameters Ensure that the above commands have configured the parameter...

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Страница 19: ...oard level and replace these boards Attempt to identify the faulty PCB board pair by swapping in the corresponding board pair from a working unit The necessary tools are 1 Phillips screwdriver 2 Allan...

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Страница 21: ...3 Dial 2 D leased 4 C leased 2 Dial 1 B leased 1 A Signal Name Pin Number Table 2 Leased Line Connector Pinout Battery C Earth B Battery A Signal Name Pin Number Table 3 Input Power Connector Pinout B...

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Страница 23: ...Appendix B Outline and Installation Drawing Telesto Private Wire Modem 19...

Страница 24: ...y voltage 24 Vdc Voltage Range 22 26 VDC Surge Level no voltages above 30 VDC Interfaces To Callisto Europa RS232 with RTS CTS data flow control To telephone line analog private wire on 2 or 4 wires B...

Страница 25: ...e Modem Power Mating connector Notes 1 See Nanometrics document 13005 for physical characteristics 2 The unit must be properly grounded with a ground wire connected to the grounding lug on the front p...

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