How is GSM availability?
Outside North America, GSM has become the world standard for mobile phones. In the U.S., companies including T-Mobile and Cingular have introduced service to most cities and suburban areas, and beyond. Both companies offer services suitable for live audio transmission. However, recently they have been discontinuing the Circuit Switched Data service without warning. It has become increasingly difficult to reliably obtain CSD service or to be able to rely on this service for broadcasts. Canada is covered by Rogers Wireless and Microcell Telecommunications, while TelCel covers much of Mexico. These GSM carriers, however, do not offer CSD at this time, so the GSM Module can only place voice calls in these countries. These maps can help you determine GSM coverage in your area. Note that many maps err on the conservative side. For example, Comrex’s headquarters in Massachusetts are shown in an area with weak coverage, but a strong signal is actually present.
Outside North America, GSM has become the world standard for mobile phones. In the U.S., companies including T-Mobile and Cingular have introduced service to most cities and suburban areas, and beyond. Both companies offer services suitable for live audio transmission. Canada is covered by Rogers Wireless and Microcell Telecommunications, while TelCel covers much of Mexico. These GSM carriers, however, do not offer CSD at this time, so the GSM Module can only place voice calls in these countries. These maps can help you determine GSM coverage in your area. Note that many maps err on the conservative side. For example, Comrexs headquarters in Massachusetts are shown in an area with weak coverage, but a strong signal is actually present.
