Chapter 4 – Troubleshooting and Frequently Asked Questions
Multi-Tech Systems, Inc. MultiModem CDMA Wireless Modem User Guide
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Note:
N1 models are usually used for developmental purposes, so the customer will usually be working with a
carrier to get this activated on their network. It is always best for the customer to be working with the carrier
when they are activating a N1 model.
I activated my modem but I can’t do anything with it. When I try to dial out, I get a NO CARRIER response.
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If you are receiving a NO CARRIER response, send ‘AT+CEER’ to check the reason for no carrier, then
check the number in the Reference Guide.
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Make sure the modem is registered and getting good signal: AT+CREG and AT+CSQ.
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Make sure the modem is activated and provisioned correctly.
I am trying to activate my Sprint modem. When I do the ‘AT+WIOTA=1’, I get an error of 1012 back.
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Please check with Sprint to make sure your ESN, MDN, and MS10 are correct. Also, make sure that the
MDN and MS10 were inserted correctly into the modem.
How do I originate a voice or data call?
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‘ATD<number>;’ for voice call.
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‘ATD<number>’ for data call.
Why does the modem answer and then do nothing?
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The modem is answering in voice mode.
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If you want to answer a data call, make sure the account has CSD service.
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You will need to set ‘AT+CICB=0’ to make the modem answer in data mode.
When I try to make a data connection by dialing to my analog modem from the wireless, why does the analog
modem answer and send tones, but never connect?
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Make sure you are using the correct dialing string. You must send ‘ATD<number>’ for a data call.
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Make sure the account has CSD service.
How do I get the voice portion to work so that I can talk to others?
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You will need a cable that has the speaker pins connected to a speaker and mic.
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We have a “Y” cable that splits out to a RJ9 connector that can be used to plug into the receiver of a
handset.
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Verizon modems currently do not support voice.
When I try to make a data call using ‘ATD<number>’, I get a NO CARRIER response.
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Check ‘AT+CEER’ for NO CARRIER reason and look it up in Reference Guide.
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Check the number that you are dialing.
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Make sure you have CSD service.
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Check registration and signal to make sure modem is registered and getting good signal: +CREG, +CSQ.
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Make sure you went through the activation procedures correctly.
How do I make a CSD dial-up connection in Windows to my ISP?
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Create a dial-up connection to the ISP’s access # and use the correct password and username.
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You must have CSD service.
Does this modem support High-Speed Circuit-Switched Data (HSCSD)?
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No, our CDMA modems do not support HSCSD.
The modem will not answer.
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Set the modem to autoanswer with ‘ATS0=1’ and ‘AT&W’ to store the setting.
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Send ‘ATA’ to the modem once the RING is indicated on the terminal screen.
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You may need to set the modem to ignore DTR, ‘AT&D0’, if your system doesn’t provide DTR.
The modem answers, but does nothing.
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Modem is answering in voice mode.
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Voice: Need a voice cable; such as our “Y” cable.
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Data: Make sure you set ‘AT+CICB=0’ to make the modem answer in data mode.
