Multi-Tech Systems MultiModem - Manual (Page 14)

Chapter 2 – Getting Started
Multi-Tech Systems, Inc. MultiModem Wireless Modem with Ethernet Interface (S000375A) 14
Answering a Circuit-Switched Data (CSD) Connection
A Circuit-Switched Data Connection makes the wireless modem work like a regular analog modem. You
must have CSD service in order to answer a CSD call.
For CDMA
Establish A Connection:
Using HyperTerminal or a terminal application, enter the following command:
AT+CICB=0 <cr> This sets the modem to answer in data mode.
Then call into the modem by dialing the number provided by your carrier.
Answer a Call: Enter ATA <cr> when you see on the terminal screen that RING responses are
coming through.
Set Auto-Answer: Enter ATS0=x (where x is the number of rings). This sets the modem to auto-
answer. The call is answered after x number of rings.
Call into the modem by dialing the number provided to you by the carrier.
Disconnect: Use the following commands:
+++ Wait about 2 seconds for OK.
Then type: ATH
For GSM
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 (where x is the number of rings). This sets the modem to auto-
answer. The call is answered after x number of rings.
Then call into the number provided to you by the carrier.
Disconnect: Use the following commands:
+++ Wait about one second to see OK.
Then type: ATH