GSM modem for dialer

We are interested in Broadcast By Phone Autodialer . We want to set up the software and do local broadcast here so Skype will be quite expensive in this case. GSM gateway is the PC interface card with a GSM sim card that can programmatically make a phone call to a target phone number. If your software can work with GSM gateway, we then can do a broadcast for lower budgets on telephone call. Here is the specification:

Please find the attached of GSM gateway and specification below. Can we use it with your software to make a call through GSM gateway? The idea is to auto dial from PC to mobile numbers from sim-card which has low cost package. Please advice.

Product Specification
Air Interface:
GSM Phase I/GSM Phase II + compatible
GSM Frequency Ranges: GSM900/GSM1800
Rx / Tx Frequency: 935~960MHz / 890~915MHZ
Rx / Tx Frequency: 1805~1880MHz / 1710~1785MHZ
RF Transmit Power: 2W(900 MHz), 1W(1800 MHz)
RF Sensitivity: < -100 dBm

Electricity Power Supply:
Input: AC100~240V/60Hz; Output: DC24V/1.5A

Connectors:
RJ11 Interface jack for telephone
RJ11 Interface jack for PSTN
SMA antenna connector
DC power input jack

Antenna:
2dbi Omni Antenna; High-gain antenna and cable as optional

Working Environment:
Operating temperature range: 0 to 50
Working Voltage: Input mark value+24VDC
Working Current: 1A
Consumption: 12W
Operating Humidity: 10% to 90%
Dimensions: 224mm(H)x160mm(W)45mm(D)
Weight: 495g

It looks like it is going to work. But you need to connect a voice modem to the GSM gateway RJ11 port in order to make phone calls. For more information about voice modem, please see Modem FAQ

You can also download the software here to give it a try.