NTI ENTERPRISE ENVIRONMENT MONITORING SYSTEM
16
Modem Connection
The ENVIROMUX includes support for a GSM modem to send alert notifications via SMS to a cell phone if desired. Either a USB
GSM modem (all
models) or a serial GSM modem (ENVIROMUX-16D/-5D only) may be connected. Using a modem each user
can receive SMS alert messages directly on their cell phone. When a USB 3G modem is used, SMS alert messages, all email
messages, and web interface control over the ENVIROMUX is possible.
USB GSM Modem
To use a USB GSM Modem, a USB modem (with GSM SIM card configured for SMS messaging) can be connected to one of the
USB ports on the ENVIROMUX. The remaining USB Type A connector(s) on the ENVIROMUX is available for the connection of
a USB Flash Drive for data logging (pages 94 and 97).
Once installed, the ENVIROMUX will sense the modem and provide status information on the “Enterprise Setup” page in the web
browser (page 58).
The USB GSM modems that have been tested and are confirmed to be compatible with the ENVIROMUX include:
• HiLink E303 3G Modem (NTI # ENVIROMUX-3GU)
• iCON GI1505(M) 3G Modem
• E-Lins M300D Industrial USB Modem
(NTI# ENVIROMUX-3GU-IND)
• iCON GI0452 3G Modem
• Zoom 4595 Modem • Teltonica USB/G10 Modem
Figure 15- Install USB GSM Modem
Cell phone Mini SIM card for GSM modem
A SIM card or Subscriber Identity Module is a portable memory chip used in some models of cellular telephones. It can be thought
of as a mini hard disk that automatically activates the phone (or in this case the GSM modem) into which it is inserted.
SIM cards are available in two standard sizes. The first is the size of a credit card (85.60 mm × 53.98 mm x 0.76 mm). The newer,
more popular miniature-version has a width of 25 mm, a height of 15 mm, and a thickness of 0.76 mm.
Some cellular service providers use Mini SIM cards. Verify with your service provider that their Mini SIM card will work with GSM
/ 3G GSM modems before making a purchase.
Your USB modem can be used for 3 different levels of functionality:
¾ SMS Messaging Only
¾ 3G Data Transfer And SMS Messaging
¾ 3G Data Transfer, SMS Messaging, and Web Interface
SMS Messaging Only
When using your modem only for SMS messaging, make sure the SIM card is for GSM communication (not CDMA), configured to
send SMS messages, and that it is not locked (some SIM cards are "locked" to search for a specific IMEI number of the phone to
operate).
Note: When configured for SMS messaging only, no access to the ENVIROMUX will be possible through the modem.
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