A European format for digital transmission. E1 supports signals at 2 Mbps (32 channels at 64Kbps, with 2 channels reserved for signaling and controlling), versus the T1, which carries signals at 1.544 Mbps (24 channels at 64Kbps).
SAND (Software Applications Networking and Development) was originally founded in Cairo, in 1999 as a Software Development company.
Since its founding, SAND has been providing high quality projects in different fields. The most prominent of which are