Difficulty completing dial-up data calls to countries outside of North America.

You may experience difficulty when placing dial-up data calls to some parts of the world, including (but not limited to): The Middle East, Southeast Asia, China, India, Russia and Taiwan.

The end-to-end data call quality and probability of connection is governed by the ability of modems at the Iridium gateway to synchronize with modems at the termination location. Modem synchronization is directly impacted by voice compression that is used by international telephony carriers. International telephony carriers typically compress the analog speech, and consequently modem tones, to reduce their bandwidth requirements for carrying calls. This compression can alter the modem tones resulting in reduced connection speeds, dropped connections, or no connections. PSTN connection quality is not unique to Iridium data services. The same problem would exist if you made a data call to these locations from your home computer.