About product and suppliers:
            1,759 gsm modem products are offered for sale by suppliers on Alibaba.com, of which modems accounts for 24%, other communication & networking modules accounts for 15%, and voip products accounts for 14%. 

A wide variety of gsm modem options are available to you, such as internal, external. You can also choose from rj-45, usb, and rs-232 gsm modem, as well as from 512kbps, 2mbps, and 256kbps gsm modem, and whether gsm modem is wireless, or wired. 

There are 1,196 suppliers who sells gsm modem on Alibaba.com, mainly located in Asia. The top countries of suppliers are China, Hong Kong S.A.R., and Taiwan, China, from which the percentage of gsm modem supply is 99%, 1%, and 1% respectively.