Voice/Fax Parameter Definitions

Chapter 4: Configuring your MVPGSM

Field Name	Values

Default	--

Select Channel	1-2

Copy Channel	--

Voice Gain	--
Input Gain	+31dB to
	–31dB

Output Gain	+31dB to
	–31dB
DTMF Gain	--

DTMF Gain,	+3dB to
High Tones	-31dB &
	“mute”

DTMF Gain, Low	+3dB to
Tones	-31dB &
	“mute”

DTMF Parameters

Duration (DTMF)	60 – 3000
	ms
DTMF	Out of
In/Out of Band	Band, or
	Inband
Out of Band	RFC 2833,
Mode	SIP Info

Description

When this button is clicked, all Voice/FAX parameters are set to their default values.

Channel to be configured is selected here.

Copies the Voice/FAX attributes of one channel to another channel. Signal amplification (or attenuation) in dB.

Modifies audio level entering voice channel before it is sent over the IP network to the remote SIP device. The default & recommended value is 0 dB.

Modifies audio level from IP to the voice channel. The default and recommended value is 0 dB.

The DTMF Gain (Dual Tone Multi-Frequency) controls the volume level of the DTMF tones sent out for Touch-Tone dialing.

Default value: -4 dB. Not to be changed except under supervision of Multi-Tech Technical Support.

Default value: -7 dB. Not to be changed except under supervision of Multi-Tech Technical Support.

When DTMF: Out of Band is selected, this setting determines how long each DTMF digit ‘sounds’ or is held. Default = 100 ms.

When DTMF Out of Band is selected, the MultiVOIP GSM detects and regenerates DTMF tones. When DTMF Inband is selected, the DTMF digits are passed through the MultiVOIP GSM unit as they are received.

RFC2833 method. Uses RTP mode defined in RFC 2833 to transmit the DTMF digits. SIP Info method. Generates DTMF tones on the telephony call leg. The SIP INFO message is sent along the signaling path of the call. You must set this parameter per the capabilities of the remote endpoint with which the VOIP will communicate. The RFC2833 method is the more common of the two methods.

FAX Parameters – This section is grayed-out as Fax is not supported by the wireless channels

Fax Enable

Modem Relay

Enable

Max Baud Rate (Fax)

Fax Volume

Jitter Value (Fax)

Mode (Fax)

Table is continued on next page…

Multi-Tech Systems, Inc.

MVPGSM

MVPGSM-2 specifications

The Multi-Tech Systems MVPGSM-2 is a robust and versatile device designed for various telecommunication applications, particularly those involving GSM cellular technology. This multi-function modem is ideally suited for machine-to-machine (M2M) communication, enabling seamless data transfer for remote monitoring, control, and automation.

One of the MVPGSM-2's key features is its dual-band GSM support, which allows for enhanced connectivity and coverage. The device operates on both 850 MHz and 1900 MHz frequency bands, ensuring compatibility with a wide range of GSM networks across different geographical areas. This flexibility makes it an excellent choice for applications that require reliable wireless communication, such as in remote sensors, telemetry, and industrial automation.

The MVPGSM-2 incorporates advanced technologies like GPRS (General Packet Radio Service) and SMS (Short Message Service), enabling efficient and real-time communication capabilities. GPRS facilitates data transmission at speeds up to 114 kbps, making it suitable for sending and receiving large volumes of data quickly. The SMS functionality allows for reliable and immediate messaging, making it easier to receive alerts and notifications in real time.

One of the standout characteristics of the MVPGSM-2 is its rugged design. Built to withstand harsh environmental conditions, it features durable casing that protects it from dust and moisture. This ruggedness ensures that the device performs reliably in various industries, including agriculture, transportation, and energy, where exposure to challenging conditions is common.

Additionally, the MVPGSM-2 supports multiple I/O ports, including digital inputs and outputs, which provide flexibility in integration with various sensors and control systems. This versatility allows users to customize the device to meet specific application needs.

The device also comes with comprehensive software and development kits that streamline integration into existing systems and applications. Multi-Tech Systems offers extensive technical support and documentation, ensuring that users can easily navigate the setup process.

In summary, the Multi-Tech MVPGSM-2 is a powerful GSM modem designed for M2M communication, featuring dual-band support, GPRS and SMS capabilities, rugged design, and flexible I/O options. Its robust performance makes it a valuable tool for various industrial applications, ensuring reliable data communication and management in the field.

Multi-Tech Systems MVPGSM-2 Voice/Fax Parameter Definitions, Field Name Values, Dtmf Parameters

Models: MVPGSM-2

Field Name

Values

DTMF Parameters