MTCBA-C-N16 Multi-Tech Systems, MTCBA-C-N16 Datasheet - Page 26

• Manufacturer Part Number: MTCBA-C-N16
• Description: MODEM CDMA RS-232 DC AERIS
• Manufacturer: Multi-Tech Systems
• Series: MultiModem® CDMAr

Specifications of MTCBA-C-N16

• Function: Transceiver, CDMA, Modem
• Modulation Or Protocol: CDMA2000
• Frequency: 800MHz, 1.9GHz
• Applications: General Purpose
• Interface: RS-232
• Data Rate - Maximum: 153.6 kbps
• Voltage - Supply: 5V
• Package / Case: Module with Case
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

How does faxing work?
When I set the S0 command, store it with &W; then send “ATZ” to the modem, the command goes back to
the default of 0?
After I set the E and &D commands followed by &W, it looks to be stored okay, but as soon as I recycle
power on the unit the E and &D commands get set back to default of E1 and &D2.
After I set the Q, V, and &S commands followed by &W, if I recycle power or send ATZ to the modem the
settings will get set back to default.
What is the max supported serial baud rate?
Multi-Tech Systems, Inc. MultiModem CDMA Wireless Modem User Guide
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The CDMA modems only support Class 2.0 Group 3 faxing.
Need fax services setup on the account.
Need fax software that supports the modem; e.g., WinFax Pro v10.0.
Need to set ‘AT+CICB=1’ for modem to answer in fax mode.
This is a bug in the modem. S0 will store just fine, as long as “ATZ” doesn’t get sent to the modem.
This is a bug in the modem. These commands will not store correctly. If modems are powered back up and
an “ATZ” is sent to the modem, then &D and E will load to your stored settings correctly.
Firmware versions 210 and above fixes the storage or the E command.
Bug in the modem. These commands will not store.
230,400 bps is the max.
Chapter 4 – Troubleshooting and Frequently Asked Questions
26