Multitech Wireless EDGE User's Guide download pdf (Page 19)

Chapter 3 – Using Your Wireless Modem

Multi-Tech Systems, Inc. MultiModem EDGE Wireless Modem User Guide 19

Establishing a Voice Call

• Enter PIN Code (Enter this only if required by your wireless provider)

Type AT+CPIN=1234

Responses: OK (PIN Code accepted)

+CME ERROR : 16 (Incorrect PIN Code)

+CME ERROR : 3 (PIN already entered [with +CMEE : 1 mode])

• Initiate a voice call

Type ATD1234; (Note: Don’t forget the semicolon “;” at the end. This stands for voice calls)

Responses: OK (Communication established)

CME ERROR : 11 (PIN Code not entered [with +CMEE : 1 mode])

CME ERROR : 3 (Operation not allowed)

• Initiate an emergency call

Type ATD112; (Note: Don’t forget the semicolon “;” at the end. This stands for voice calls)

Responses: OK

• Hang up

Type ATH

Responses: OK

Establishing a Circuit-Switched Data Call for a Point-to-

Point Connection

A Circuit-Switched Data Connection (CSD) makes the wireless modem work similar to a regular analog modem.

You must have CSD service in order to make a CSD call. Note that your wireless provider charges airtime usage

for these connections.

Note: Your wireless service provider charges airtime usage for thes connections.

1. Using HyperTerminal, you can establish a CSD connection by entering the following command:

ATD<phone number>

Notes:

• The phone number you are calling is entered between the brackets. For example, <8585551212>

• This command tells the modem to dial the desired phone number. If you are dialing to another

modem, the modem should answer and a connection between the two modems will be established.

2. To disconnect, use the following commands:

+++ Wait about two seconds to see an OK response. Then type:

ATH

Note: +++ is the escape sequence and ATH is the Hang-up command.

Answering a Circuit-Switched Data (CSD) Connection

A Circuit-Switched Data Connection makes the wireless modem work similar to a regular analog modem. You

must have CSD service in order to answer a CSD call.

There are three phone numbers for GSM: the voice number, the data number, and the fax number. All are

provided by the carrier. To answer a call:

Establish A Connection: Call into the modem by dialing the data number provided by your carrier.

Answer a Call: When you see the RING responses on the terminal screen, enter ATA <cr> to

answer the call.

Set Auto-Answer: Enter ATS0=x

This sets the modem to auto-answer. The call will be answered after the number

of rings entered. x stand for the number rings.

Then call into the number provided to you by the carrier.

Disconnect: Type: +++

Wait about one second to see an OK response.

Then type: ATH

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Multitech Wireless EDGE User's Guide Page 19

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