Establishing a Voice Call

Chapter 3 – Using Your Wireless Modem

•Enter PIN Code (Enter this only if required by your wireless provider)

Type AT+CPIN=1234

Responses: OK (PIN Code accepted)

+CME ERROR : 16 (Incorrect PIN Code)

+CME ERROR : 3 (PIN already entered [with +CMEE : 1 mode])

•Initiate a voice call

Type ATD1234; (Note: Don’t forget the semicolon “;” at the end. This stands for voice calls)

Responses: OK (Communication established)

CME ERROR : 11 (PIN Code not entered [with +CMEE : 1 mode])

CME ERROR : 3 (Operation not allowed)

•Initiate an emergency call

Type ATD112; (Note: Don’t forget the semicolon “;” at the end. This stands for voice calls)

Responses: OK

•Hang up Type ATH

Responses: OK

Establishing a Circuit-Switched Data Call for a Point-to- Point Connection

A Circuit-Switched Data Connection (CSD) makes the wireless modem work similar to a regular analog modem. You must have CSD service in order to make a CSD call. Note that your wireless provider charges airtime usage for these connections.

Note: Your wireless service provider charges airtime usage for thes connections.

1.Using HyperTerminal, you can establish a CSD connection by entering the following command:

ATD<phone number>

Notes:

•The phone number you are calling is entered between the brackets. For example, <8585551212>

•This command tells the modem to dial the desired phone number. If you are dialing to another modem, the modem should answer and a connection between the two modems will be established.

2.To disconnect, use the following commands:

+++ Wait about two seconds to see an OK response. Then type:

ATH

Note: +++ is the escape sequence and ATH is the Hang-up command.

Answering a Circuit-Switched Data (CSD) Connection

A Circuit-Switched Data Connection makes the wireless modem work similar to a regular analog modem. You must have CSD service in order to answer a CSD call.

There are three phone numbers for GSM: the voice number, the data number, and the fax number. All are provided by the carrier. To answer a call:

Establish A Connection:	Call into the modem by dialing the data number provided by your carrier.
Answer a Call:	When you see the RING responses on the terminal screen, enter ATA <cr> to
	answer the call.
Set Auto-Answer:	Enter ATS0=x
	This sets the modem to auto-answer. The call will be answered after the number
	of rings entered. x stand for the number rings.
	Then call into the number provided to you by the carrier.
Disconnect:	Type: +++
	Wait about one second to see an OK response.
	Then type: ATH

Multi-Tech Systems, Inc. MultiModem EDGE Wireless Modem User Guide

MTCBA-E specifications

The Multi-Tech Systems MTCBA-E is a robust and versatile cellular modem designed to meet the demands of various industrial applications. This innovative device combines reliable connectivity with advanced features, making it a popular choice among businesses looking to integrate cellular communication into their operations.

One of the standout features of the MTCBA-E is its multi-band LTE capability. This modem supports various LTE frequency bands, ensuring compatibility with multiple carriers and networks. This flexibility allows users to deploy the device across different geographical regions without the need for extensive reconfiguration, making it ideal for businesses with a wide-ranging footprint.

The MTCBA-E is engineered for durability and reliability, making it well-suited for harsh environments. Its rugged design ensures that it can withstand extreme temperatures, dust, and moisture, which is essential for outdoor applications and industrial use cases. This resilience helps reduce maintenance costs and enhances lifespan, providing a long-lasting communication solution.

In addition to its physical durability, the MTCBA-E incorporates advanced security features to safeguard data transmission. It supports secure VPN protocols, which is critical for protecting sensitive business information as it traverses public networks. This focus on security ensures that users can transmit data confidently, which is vital for applications that deal with sensitive or proprietary information.

Another notable characteristic of the MTCBA-E is its dual SIM functionality. This feature allows for failover capabilities, ensuring that the modem can switch between two different cellular networks seamlessly. This redundancy is crucial for mission-critical applications that demand uninterrupted connectivity, such as remote monitoring and IoT deployments.

The modem also includes a range of connectivity options, such as Ethernet and USB interfaces, allowing for straightforward integration with various devices and systems. Furthermore, it supports multiple communication protocols, ensuring compatibility with a wide array of applications, from telematics and asset tracking to smart city initiatives.

In terms of management and monitoring, the MTCBA-E offers a user-friendly interface that facilitates easy configuration and monitoring of the device's performance. This greatly simplifies network management, and helps in troubleshooting potential issues quickly and efficiently.

Overall, the Multi-Tech Systems MTCBA-E is a well-rounded cellular modem that combines advanced technology with robust design, making it an ideal choice for organizations looking to enhance their connectivity capabilities in a wide range of applications. Its combination of durability, security, and flexibility ensures that it meets the evolving needs of modern communication.