Multitech MTCMR-H User's Guide download pdf (Page 23)

Chapter 3 – Using your Wireless Modem

Multi-Tech Systems, Inc. MultiModem iCell Intelligent Wireless Modem User Guide 23

Generic Dial-Up Method - Non-Windows

1. To disable the IP stack, enter AT+WOPEN=0

2. To set up an Access Point Name (APN):

AT+CGDCONT=1, “IP”,”<APNSERVER>”

Where <APNSERVER> is the APN server supplied by your carrier

3. Dial onto the network using AT*99***1#

Serial Baud Rate

Your MultiModem iCell is defaulted to a serial baud rate of 115200 from the factory. To enjoy faster baud rates,

you can manually set the modem to a higher speed (230400, 460800, or 921600) using the

AT+IPR=<baudspeed>. However, you must make sure the host serial port is capable of the new speed. If the

new speed is set and the host hardware is not capable of the higher speed, you will need to find a host that is

capable or reset the nvram with the following:

Open a terminal application such as hypterm with the following settings:

19200, 8, NONE, Hardware Flow Control

When the modem boots there is a 500ms window to do the following:

Issue: M

Response: MU

Issue: D

Response: M

Issue: S

Response: S<cr><if>OK<cr><lf>

Recovery

To do this manually, power off the modem, depress the Caps Lock key and hold down the M key. Power on the

modem, a MU should display. Press the D key and then the S key quickly.

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Multitech MTCMR-H User's Guide Page 23