You could find perfect gateway for your business here!

[Rokki]

I am Rokki from Chinaskyline, responsible for GSM Gateway and SMS Modem sales business.
Product capacity includes 8/16/32/64 ports VOIP gateway network frequency corresponding to the actual situation of each country.
If you need this product for sending bulk SMS or making call center program
For information, plz add directly.
skype: ding.sunny2
whatsapp: +8613510801271
Wechat: 13510801271
Messenger: Rokki