MTCBA-C-N12 Multi-Tech Systems, MTCBA-C-N12 Datasheet - Page 25

• Manufacturer Part Number: MTCBA-C-N12
• Description: MODEM CDMA 800/1900MHZ DC PWR IP
• Manufacturer: Multi-Tech Systems

Specifications of MTCBA-C-N12

• Function: Transceiver, CDMA, Modem
• Modulation Or Protocol: CDMA2000
• Frequency: 800MHz, 1.9GHz
• Interface: RS-232
• Data Rate - Maximum: 153.6 kbps
• Voltage - Supply: 5 V ~ 32 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Power - Output: -
• Applications: -
• Sensitivity: -
• Other names: 881-1024

I activated my modem but I can’t do anything with it. When I try to dial out, I get a NO CARRIER response.
I am trying to activate my Sprint modem. When I do the ‘AT+WIOTA=1’, I get an error of 1012 back.
How do I originate a voice or data call?
Why does the modem answer and then do nothing?
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?
How do I get the voice portion to work so that I can talk to others?
When I try to make a data call using ‘ATD<number>’, I get a NO CARRIER response.
How do I make a CSD dial-up connection in Windows to my ISP?
Does this modem support High-Speed Circuit-Switched Data (HSCSD)?
The modem will not answer.
The modem answers, but does nothing.
Multi-Tech Systems, Inc. MultiModem CDMA Wireless Modem User Guide
Note:
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.
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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.
Make sure the modem is registered and getting good signal: AT+CREG and AT+CSQ.
Make sure the modem is activated and provisioned correctly.
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.
‘ATD<number>;’ for voice call.
‘ATD<number>’ for data call.
The modem is answering in voice mode.
If you want to answer a data call, make sure the account has CSD service.
You will need to set ‘AT+CICB=0’ to make the modem answer in data mode.
Make sure you are using the correct dialing string. You must send ‘ATD<number>’ for a data call.
Make sure the account has CSD service.
You will need a cable that has the speaker pins connected to a speaker and mic.
We have a “Y” cable that splits out to a RJ9 connector that can be used to plug into the receiver of a
handset.
Verizon modems currently do not support voice.
Check ‘AT+CEER’ for NO CARRIER reason and look it up in Reference Guide.
Check the number that you are dialing.
Make sure you have CSD service.
Check registration and signal to make sure modem is registered and getting good signal: +CREG, +CSQ.
Make sure you went through the activation procedures correctly.
Create a dial-up connection to the ISP’s access # and use the correct password and username.
You must have CSD service.
No, our CDMA modems do not support HSCSD.
Set the modem to autoanswer with ‘ATS0=1’ and ‘AT&W’ to store the setting.
Send ‘ATA’ to the modem once the RING is indicated on the terminal screen.
You may need to set the modem to ignore DTR, ‘AT&D0’, if your system doesn’t provide DTR.
Modem is answering in voice mode.
Voice: Need a voice cable; such as our “Y” cable.
Data: Make sure you set ‘AT+CICB=0’ to make the modem answer in data mode.
N1 models are usually used for developmental purposes, so the customer will usually be working with a
Chapter 4 – Troubleshooting and Frequently Asked Questions
25