We are offering modem pool. As professional manufacture in modem pool for years, you will be sure to get the most competitive price.good quality and fast delivery from us.sample is available fo your test, if possible you are welcome to our factory directly, discuss face to face. the price is different according to different module inside, wavecom or siemens, up to you.here below are the model list for your reference. wavecomq2406 dual band 900/1800mhz, support sms, mms, fax, web, tcp/ip, open atq24plus quad-band, supports support sms, mms, fax, web, tcp/ip, open atq2686 quad-band, support sms, mms, fax, web, tcp/ip, open atq2687 edge, more fast in date transfer, support sms, mms, fax, web, tcp/ip, open at how to send bulk sms ?after install the usb driver, there will be 32 com port generated in your device manage, then you can open the sms software, try to send bulk sms.the baudrate is 115200 by default. Directory category promarket.in: modems 3g, gsm, cdma in madhya pradesh.