E1/T1

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).

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Asterisk Voicemail

Asterisk voicemail implementation provides integrators with option to replace proprietary existing voicemail systems with Asterisk voicemail at a merely symbolic cost. The service can be applied as a basic stand-alone utility or can operate a front end of an Unified Messaging system, holding messages by IMAP or ODBC. Creating the Asterisk voicemail server is simple and just a fraction of dial plan scripting is being needed.

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